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Server functionality for HBase
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.regionserver;
import com.google.errorprone.annotations.RestrictedApi;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.net.BindException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.NavigableMap;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.atomic.LongAdder;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.CacheEvictionStats;
import org.apache.hadoop.hbase.CacheEvictionStatsBuilder;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CellScannable;
import org.apache.hadoop.hbase.CellScanner;
import org.apache.hadoop.hbase.CellUtil;
import org.apache.hadoop.hbase.DoNotRetryIOException;
import org.apache.hadoop.hbase.DroppedSnapshotException;
import org.apache.hadoop.hbase.HBaseIOException;
import org.apache.hadoop.hbase.HBaseRpcServicesBase;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.MultiActionResultTooLarge;
import org.apache.hadoop.hbase.NotServingRegionException;
import org.apache.hadoop.hbase.PrivateCellUtil;
import org.apache.hadoop.hbase.RegionTooBusyException;
import org.apache.hadoop.hbase.Server;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.UnknownScannerException;
import org.apache.hadoop.hbase.client.Append;
import org.apache.hadoop.hbase.client.CheckAndMutate;
import org.apache.hadoop.hbase.client.CheckAndMutateResult;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Durability;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.Increment;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.client.OperationWithAttributes;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.RegionInfo;
import org.apache.hadoop.hbase.client.RegionReplicaUtil;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.Row;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.TableDescriptor;
import org.apache.hadoop.hbase.client.VersionInfoUtil;
import org.apache.hadoop.hbase.exceptions.FailedSanityCheckException;
import org.apache.hadoop.hbase.exceptions.OutOfOrderScannerNextException;
import org.apache.hadoop.hbase.exceptions.ScannerResetException;
import org.apache.hadoop.hbase.exceptions.TimeoutIOException;
import org.apache.hadoop.hbase.exceptions.UnknownProtocolException;
import org.apache.hadoop.hbase.io.ByteBuffAllocator;
import org.apache.hadoop.hbase.io.hfile.BlockCache;
import org.apache.hadoop.hbase.ipc.HBaseRpcController;
import org.apache.hadoop.hbase.ipc.PriorityFunction;
import org.apache.hadoop.hbase.ipc.QosPriority;
import org.apache.hadoop.hbase.ipc.RpcCall;
import org.apache.hadoop.hbase.ipc.RpcCallContext;
import org.apache.hadoop.hbase.ipc.RpcCallback;
import org.apache.hadoop.hbase.ipc.RpcServer;
import org.apache.hadoop.hbase.ipc.RpcServer.BlockingServiceAndInterface;
import org.apache.hadoop.hbase.ipc.RpcServerFactory;
import org.apache.hadoop.hbase.ipc.RpcServerInterface;
import org.apache.hadoop.hbase.ipc.ServerNotRunningYetException;
import org.apache.hadoop.hbase.ipc.ServerRpcController;
import org.apache.hadoop.hbase.net.Address;
import org.apache.hadoop.hbase.procedure2.RSProcedureCallable;
import org.apache.hadoop.hbase.quotas.ActivePolicyEnforcement;
import org.apache.hadoop.hbase.quotas.OperationQuota;
import org.apache.hadoop.hbase.quotas.QuotaUtil;
import org.apache.hadoop.hbase.quotas.RegionServerRpcQuotaManager;
import org.apache.hadoop.hbase.quotas.RegionServerSpaceQuotaManager;
import org.apache.hadoop.hbase.quotas.SpaceQuotaSnapshot;
import org.apache.hadoop.hbase.quotas.SpaceViolationPolicyEnforcement;
import org.apache.hadoop.hbase.regionserver.LeaseManager.Lease;
import org.apache.hadoop.hbase.regionserver.LeaseManager.LeaseStillHeldException;
import org.apache.hadoop.hbase.regionserver.Region.Operation;
import org.apache.hadoop.hbase.regionserver.ScannerContext.LimitScope;
import org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker;
import org.apache.hadoop.hbase.regionserver.handler.AssignRegionHandler;
import org.apache.hadoop.hbase.regionserver.handler.OpenMetaHandler;
import org.apache.hadoop.hbase.regionserver.handler.OpenPriorityRegionHandler;
import org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler;
import org.apache.hadoop.hbase.regionserver.handler.UnassignRegionHandler;
import org.apache.hadoop.hbase.replication.ReplicationUtils;
import org.apache.hadoop.hbase.replication.regionserver.RejectReplicationRequestStateChecker;
import org.apache.hadoop.hbase.replication.regionserver.RejectRequestsFromClientStateChecker;
import org.apache.hadoop.hbase.security.Superusers;
import org.apache.hadoop.hbase.security.access.Permission;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.DNS;
import org.apache.hadoop.hbase.util.DNS.ServerType;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.hadoop.hbase.util.Pair;
import org.apache.hadoop.hbase.util.ServerRegionReplicaUtil;
import org.apache.hadoop.hbase.wal.WAL;
import org.apache.hadoop.hbase.wal.WALEdit;
import org.apache.hadoop.hbase.wal.WALKey;
import org.apache.hadoop.hbase.wal.WALSplitUtil;
import org.apache.hadoop.hbase.wal.WALSplitUtil.MutationReplay;
import org.apache.hadoop.hbase.zookeeper.ZKWatcher;
import org.apache.yetus.audience.InterfaceAudience;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hbase.thirdparty.com.google.common.cache.Cache;
import org.apache.hbase.thirdparty.com.google.common.cache.CacheBuilder;
import org.apache.hbase.thirdparty.com.google.common.collect.ImmutableList;
import org.apache.hbase.thirdparty.com.google.common.collect.Lists;
import org.apache.hbase.thirdparty.com.google.protobuf.ByteString;
import org.apache.hbase.thirdparty.com.google.protobuf.Message;
import org.apache.hbase.thirdparty.com.google.protobuf.RpcController;
import org.apache.hbase.thirdparty.com.google.protobuf.ServiceException;
import org.apache.hbase.thirdparty.com.google.protobuf.TextFormat;
import org.apache.hbase.thirdparty.com.google.protobuf.UnsafeByteOperations;
import org.apache.hbase.thirdparty.org.apache.commons.collections4.CollectionUtils;
import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;
import org.apache.hadoop.hbase.shaded.protobuf.ResponseConverter;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.AdminService;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.ClearCompactionQueuesRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.ClearCompactionQueuesResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.ClearRegionBlockCacheRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.ClearRegionBlockCacheResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CloseRegionRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CloseRegionResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CompactRegionRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CompactRegionResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CompactionSwitchRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CompactionSwitchResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.ExecuteProceduresRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.ExecuteProceduresResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.FlushRegionRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.FlushRegionResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetOnlineRegionRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetOnlineRegionResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionLoadRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionLoadResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetServerInfoRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetServerInfoResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetStoreFileRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetStoreFileResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.OpenRegionRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.OpenRegionRequest.RegionOpenInfo;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.OpenRegionResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.OpenRegionResponse.RegionOpeningState;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.RemoteProcedureRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.ReplicateWALEntryRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.ReplicateWALEntryResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.RollWALWriterRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.RollWALWriterResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.StopServerRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.StopServerResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.WALEntry;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.WarmupRegionRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.WarmupRegionResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.BootstrapNodeProtos.BootstrapNodeService;
import org.apache.hadoop.hbase.shaded.protobuf.generated.BootstrapNodeProtos.GetAllBootstrapNodesRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.BootstrapNodeProtos.GetAllBootstrapNodesResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.Action;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.BulkLoadHFileRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.BulkLoadHFileRequest.FamilyPath;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.BulkLoadHFileResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CleanupBulkLoadRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CleanupBulkLoadResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ClientService;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.Condition;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.GetRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.GetResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MultiRegionLoadStats;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MultiRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MultiResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutateRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutateResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutationProto;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutationProto.MutationType;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.PrepareBulkLoadRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.PrepareBulkLoadResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.RegionAction;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.RegionActionResult;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ResultOrException;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ScanRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ScanResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos.RegionLoad;
import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.NameBytesPair;
import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.NameInt64Pair;
import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionSpecifier;
import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionSpecifier.RegionSpecifierType;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MapReduceProtos.ScanMetrics;
import org.apache.hadoop.hbase.shaded.protobuf.generated.QuotaProtos.GetSpaceQuotaSnapshotsRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.QuotaProtos.GetSpaceQuotaSnapshotsResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.QuotaProtos.GetSpaceQuotaSnapshotsResponse.TableQuotaSnapshot;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegistryProtos.ClientMetaService;
import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.BulkLoadDescriptor;
import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.CompactionDescriptor;
import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.FlushDescriptor;
import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.RegionEventDescriptor;
/**
* Implements the regionserver RPC services.
*/
@InterfaceAudience.Private
public class RSRpcServices extends HBaseRpcServicesBase
implements ClientService.BlockingInterface, BootstrapNodeService.BlockingInterface {
private static final Logger LOG = LoggerFactory.getLogger(RSRpcServices.class);
/** RPC scheduler to use for the region server. */
public static final String REGION_SERVER_RPC_SCHEDULER_FACTORY_CLASS =
"hbase.region.server.rpc.scheduler.factory.class";
/**
* Minimum allowable time limit delta (in milliseconds) that can be enforced during scans. This
* configuration exists to prevent the scenario where a time limit is specified to be so
* restrictive that the time limit is reached immediately (before any cells are scanned).
*/
private static final String REGION_SERVER_RPC_MINIMUM_SCAN_TIME_LIMIT_DELTA =
"hbase.region.server.rpc.minimum.scan.time.limit.delta";
/**
* Default value of {@link RSRpcServices#REGION_SERVER_RPC_MINIMUM_SCAN_TIME_LIMIT_DELTA}
*/
static final long DEFAULT_REGION_SERVER_RPC_MINIMUM_SCAN_TIME_LIMIT_DELTA = 10;
/**
* Whether to reject rows with size > threshold defined by
* {@link HConstants#BATCH_ROWS_THRESHOLD_NAME}
*/
private static final String REJECT_BATCH_ROWS_OVER_THRESHOLD =
"hbase.rpc.rows.size.threshold.reject";
/**
* Default value of config {@link RSRpcServices#REJECT_BATCH_ROWS_OVER_THRESHOLD}
*/
private static final boolean DEFAULT_REJECT_BATCH_ROWS_OVER_THRESHOLD = false;
// Request counter. (Includes requests that are not serviced by regions.)
// Count only once for requests with multiple actions like multi/caching-scan/replayBatch
final LongAdder requestCount = new LongAdder();
// Request counter for rpc get
final LongAdder rpcGetRequestCount = new LongAdder();
// Request counter for rpc scan
final LongAdder rpcScanRequestCount = new LongAdder();
// Request counter for scans that might end up in full scans
final LongAdder rpcFullScanRequestCount = new LongAdder();
// Request counter for rpc multi
final LongAdder rpcMultiRequestCount = new LongAdder();
// Request counter for rpc mutate
final LongAdder rpcMutateRequestCount = new LongAdder();
private volatile long maxScannerResultSize;
private ScannerIdGenerator scannerIdGenerator;
private final ConcurrentMap scanners = new ConcurrentHashMap<>();
// Hold the name of a closed scanner for a while. This is used to keep compatible for old clients
// which may send next or close request to a region scanner which has already been exhausted. The
// entries will be removed automatically after scannerLeaseTimeoutPeriod.
private final Cache closedScanners;
/**
* The lease timeout period for client scanners (milliseconds).
*/
private final int scannerLeaseTimeoutPeriod;
/**
* The RPC timeout period (milliseconds)
*/
private final int rpcTimeout;
/**
* The minimum allowable delta to use for the scan limit
*/
private final long minimumScanTimeLimitDelta;
/**
* Row size threshold for multi requests above which a warning is logged
*/
private volatile int rowSizeWarnThreshold;
/*
* Whether we should reject requests with very high no of rows i.e. beyond threshold defined by
* rowSizeWarnThreshold
*/
private volatile boolean rejectRowsWithSizeOverThreshold;
final AtomicBoolean clearCompactionQueues = new AtomicBoolean(false);
/**
* Services launched in RSRpcServices. By default they are on but you can use the below booleans
* to selectively enable/disable either Admin or Client Service (Rare is the case where you would
* ever turn off one or the other).
*/
public static final String REGIONSERVER_ADMIN_SERVICE_CONFIG =
"hbase.regionserver.admin.executorService";
public static final String REGIONSERVER_CLIENT_SERVICE_CONFIG =
"hbase.regionserver.client.executorService";
public static final String REGIONSERVER_CLIENT_META_SERVICE_CONFIG =
"hbase.regionserver.client.meta.executorService";
/**
* An Rpc callback for closing a RegionScanner.
*/
private static final class RegionScannerCloseCallBack implements RpcCallback {
private final RegionScanner scanner;
public RegionScannerCloseCallBack(RegionScanner scanner) {
this.scanner = scanner;
}
@Override
public void run() throws IOException {
this.scanner.close();
}
}
/**
* An Rpc callback for doing shipped() call on a RegionScanner.
*/
private class RegionScannerShippedCallBack implements RpcCallback {
private final String scannerName;
private final Shipper shipper;
private final Lease lease;
public RegionScannerShippedCallBack(String scannerName, Shipper shipper, Lease lease) {
this.scannerName = scannerName;
this.shipper = shipper;
this.lease = lease;
}
@Override
public void run() throws IOException {
this.shipper.shipped();
// We're done. On way out re-add the above removed lease. The lease was temp removed for this
// Rpc call and we are at end of the call now. Time to add it back.
if (scanners.containsKey(scannerName)) {
if (lease != null) {
server.getLeaseManager().addLease(lease);
}
}
}
}
/**
* An RpcCallBack that creates a list of scanners that needs to perform callBack operation on
* completion of multiGets.
*/
static class RegionScannersCloseCallBack implements RpcCallback {
private final List scanners = new ArrayList<>();
public void addScanner(RegionScanner scanner) {
this.scanners.add(scanner);
}
@Override
public void run() {
for (RegionScanner scanner : scanners) {
try {
scanner.close();
} catch (IOException e) {
LOG.error("Exception while closing the scanner " + scanner, e);
}
}
}
}
/**
* Holder class which holds the RegionScanner, nextCallSeq and RpcCallbacks together.
*/
static final class RegionScannerHolder {
private final AtomicLong nextCallSeq = new AtomicLong(0);
private final RegionScanner s;
private final HRegion r;
private final RpcCallback closeCallBack;
private final RpcCallback shippedCallback;
private byte[] rowOfLastPartialResult;
private boolean needCursor;
private boolean fullRegionScan;
private final String clientIPAndPort;
private final String userName;
RegionScannerHolder(RegionScanner s, HRegion r, RpcCallback closeCallBack,
RpcCallback shippedCallback, boolean needCursor, boolean fullRegionScan,
String clientIPAndPort, String userName) {
this.s = s;
this.r = r;
this.closeCallBack = closeCallBack;
this.shippedCallback = shippedCallback;
this.needCursor = needCursor;
this.fullRegionScan = fullRegionScan;
this.clientIPAndPort = clientIPAndPort;
this.userName = userName;
}
long getNextCallSeq() {
return nextCallSeq.get();
}
boolean incNextCallSeq(long currentSeq) {
// Use CAS to prevent multiple scan request running on the same scanner.
return nextCallSeq.compareAndSet(currentSeq, currentSeq + 1);
}
// Should be called only when we need to print lease expired messages otherwise
// cache the String once made.
@Override
public String toString() {
return "clientIPAndPort=" + this.clientIPAndPort + ", userName=" + this.userName
+ ", regionInfo=" + this.r.getRegionInfo().getRegionNameAsString();
}
}
/**
* Instantiated as a scanner lease. If the lease times out, the scanner is closed
*/
private class ScannerListener implements LeaseListener {
private final String scannerName;
ScannerListener(final String n) {
this.scannerName = n;
}
@Override
public void leaseExpired() {
RegionScannerHolder rsh = scanners.remove(this.scannerName);
if (rsh == null) {
LOG.warn("Scanner lease {} expired but no outstanding scanner", this.scannerName);
return;
}
LOG.info("Scanner lease {} expired {}", this.scannerName, rsh);
server.getMetrics().incrScannerLeaseExpired();
RegionScanner s = rsh.s;
HRegion region = null;
try {
region = server.getRegion(s.getRegionInfo().getRegionName());
if (region != null && region.getCoprocessorHost() != null) {
region.getCoprocessorHost().preScannerClose(s);
}
} catch (IOException e) {
LOG.error("Closing scanner {} {}", this.scannerName, rsh, e);
} finally {
try {
s.close();
if (region != null && region.getCoprocessorHost() != null) {
region.getCoprocessorHost().postScannerClose(s);
}
} catch (IOException e) {
LOG.error("Closing scanner {} {}", this.scannerName, rsh, e);
}
}
}
}
private static ResultOrException getResultOrException(final ClientProtos.Result r,
final int index) {
return getResultOrException(ResponseConverter.buildActionResult(r), index);
}
private static ResultOrException getResultOrException(final Exception e, final int index) {
return getResultOrException(ResponseConverter.buildActionResult(e), index);
}
private static ResultOrException getResultOrException(final ResultOrException.Builder builder,
final int index) {
return builder.setIndex(index).build();
}
/**
* Checks for the following pre-checks in order:
*
* - RegionServer is running
* - If authorization is enabled, then RPC caller has ADMIN permissions
*
* @param requestName name of rpc request. Used in reporting failures to provide context.
* @throws ServiceException If any of the above listed pre-check fails.
*/
private void rpcPreCheck(String requestName) throws ServiceException {
try {
checkOpen();
requirePermission(requestName, Permission.Action.ADMIN);
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
}
private boolean isClientCellBlockSupport(RpcCallContext context) {
return context != null && context.isClientCellBlockSupported();
}
private void addResult(final MutateResponse.Builder builder, final Result result,
final HBaseRpcController rpcc, boolean clientCellBlockSupported) {
if (result == null) return;
if (clientCellBlockSupported) {
builder.setResult(ProtobufUtil.toResultNoData(result));
rpcc.setCellScanner(result.cellScanner());
} else {
ClientProtos.Result pbr = ProtobufUtil.toResult(result);
builder.setResult(pbr);
}
}
private void addResults(ScanResponse.Builder builder, List results,
HBaseRpcController controller, boolean isDefaultRegion, boolean clientCellBlockSupported) {
builder.setStale(!isDefaultRegion);
if (results.isEmpty()) {
return;
}
if (clientCellBlockSupported) {
for (Result res : results) {
builder.addCellsPerResult(res.size());
builder.addPartialFlagPerResult(res.mayHaveMoreCellsInRow());
}
controller.setCellScanner(CellUtil.createCellScanner(results));
} else {
for (Result res : results) {
ClientProtos.Result pbr = ProtobufUtil.toResult(res);
builder.addResults(pbr);
}
}
}
private CheckAndMutateResult checkAndMutate(HRegion region, List actions,
CellScanner cellScanner, Condition condition, long nonceGroup,
ActivePolicyEnforcement spaceQuotaEnforcement) throws IOException {
int countOfCompleteMutation = 0;
try {
if (!region.getRegionInfo().isMetaRegion()) {
server.getMemStoreFlusher().reclaimMemStoreMemory();
}
List mutations = new ArrayList<>();
long nonce = HConstants.NO_NONCE;
for (ClientProtos.Action action : actions) {
if (action.hasGet()) {
throw new DoNotRetryIOException(
"Atomic put and/or delete only, not a Get=" + action.getGet());
}
MutationProto mutation = action.getMutation();
MutationType type = mutation.getMutateType();
switch (type) {
case PUT:
Put put = ProtobufUtil.toPut(mutation, cellScanner);
++countOfCompleteMutation;
checkCellSizeLimit(region, put);
spaceQuotaEnforcement.getPolicyEnforcement(region).check(put);
mutations.add(put);
break;
case DELETE:
Delete del = ProtobufUtil.toDelete(mutation, cellScanner);
++countOfCompleteMutation;
spaceQuotaEnforcement.getPolicyEnforcement(region).check(del);
mutations.add(del);
break;
case INCREMENT:
Increment increment = ProtobufUtil.toIncrement(mutation, cellScanner);
nonce = mutation.hasNonce() ? mutation.getNonce() : HConstants.NO_NONCE;
++countOfCompleteMutation;
checkCellSizeLimit(region, increment);
spaceQuotaEnforcement.getPolicyEnforcement(region).check(increment);
mutations.add(increment);
break;
case APPEND:
Append append = ProtobufUtil.toAppend(mutation, cellScanner);
nonce = mutation.hasNonce() ? mutation.getNonce() : HConstants.NO_NONCE;
++countOfCompleteMutation;
checkCellSizeLimit(region, append);
spaceQuotaEnforcement.getPolicyEnforcement(region).check(append);
mutations.add(append);
break;
default:
throw new DoNotRetryIOException("invalid mutation type : " + type);
}
}
if (mutations.size() == 0) {
return new CheckAndMutateResult(true, null);
} else {
CheckAndMutate checkAndMutate = ProtobufUtil.toCheckAndMutate(condition, mutations);
CheckAndMutateResult result = null;
if (region.getCoprocessorHost() != null) {
result = region.getCoprocessorHost().preCheckAndMutate(checkAndMutate);
}
if (result == null) {
result = region.checkAndMutate(checkAndMutate, nonceGroup, nonce);
if (region.getCoprocessorHost() != null) {
result = region.getCoprocessorHost().postCheckAndMutate(checkAndMutate, result);
}
}
return result;
}
} finally {
// Currently, the checkAndMutate isn't supported by batch so it won't mess up the cell scanner
// even if the malformed cells are not skipped.
for (int i = countOfCompleteMutation; i < actions.size(); ++i) {
skipCellsForMutation(actions.get(i), cellScanner);
}
}
}
/**
* Execute an append mutation.
* @return result to return to client if default operation should be bypassed as indicated by
* RegionObserver, null otherwise
*/
private Result append(final HRegion region, final OperationQuota quota,
final MutationProto mutation, final CellScanner cellScanner, long nonceGroup,
ActivePolicyEnforcement spaceQuota, RpcCallContext context) throws IOException {
long before = EnvironmentEdgeManager.currentTime();
Append append = ProtobufUtil.toAppend(mutation, cellScanner);
checkCellSizeLimit(region, append);
spaceQuota.getPolicyEnforcement(region).check(append);
quota.addMutation(append);
long blockBytesScannedBefore = context != null ? context.getBlockBytesScanned() : 0;
long nonce = mutation.hasNonce() ? mutation.getNonce() : HConstants.NO_NONCE;
Result r = region.append(append, nonceGroup, nonce);
if (server.getMetrics() != null) {
long blockBytesScanned =
context != null ? context.getBlockBytesScanned() - blockBytesScannedBefore : 0;
server.getMetrics().updateAppend(region, EnvironmentEdgeManager.currentTime() - before,
blockBytesScanned);
}
return r == null ? Result.EMPTY_RESULT : r;
}
/**
* Execute an increment mutation.
*/
private Result increment(final HRegion region, final OperationQuota quota,
final MutationProto mutation, final CellScanner cells, long nonceGroup,
ActivePolicyEnforcement spaceQuota, RpcCallContext context) throws IOException {
long before = EnvironmentEdgeManager.currentTime();
Increment increment = ProtobufUtil.toIncrement(mutation, cells);
checkCellSizeLimit(region, increment);
spaceQuota.getPolicyEnforcement(region).check(increment);
quota.addMutation(increment);
long blockBytesScannedBefore = context != null ? context.getBlockBytesScanned() : 0;
long nonce = mutation.hasNonce() ? mutation.getNonce() : HConstants.NO_NONCE;
Result r = region.increment(increment, nonceGroup, nonce);
final MetricsRegionServer metricsRegionServer = server.getMetrics();
if (metricsRegionServer != null) {
long blockBytesScanned =
context != null ? context.getBlockBytesScanned() - blockBytesScannedBefore : 0;
metricsRegionServer.updateIncrement(region, EnvironmentEdgeManager.currentTime() - before,
blockBytesScanned);
}
return r == null ? Result.EMPTY_RESULT : r;
}
/**
* Run through the regionMutation rm and per Mutation, do the work, and then when
* done, add an instance of a {@link ResultOrException} that corresponds to each Mutation.
* @param cellsToReturn Could be null. May be allocated in this method. This is what this method
* returns as a 'result'.
* @param closeCallBack the callback to be used with multigets
* @param context the current RpcCallContext
* @return Return the cellScanner passed
*/
private List doNonAtomicRegionMutation(final HRegion region,
final OperationQuota quota, final RegionAction actions, final CellScanner cellScanner,
final RegionActionResult.Builder builder, List cellsToReturn, long nonceGroup,
final RegionScannersCloseCallBack closeCallBack, RpcCallContext context,
ActivePolicyEnforcement spaceQuotaEnforcement) {
// Gather up CONTIGUOUS Puts and Deletes in this mutations List. Idea is that rather than do
// one at a time, we instead pass them in batch. Be aware that the corresponding
// ResultOrException instance that matches each Put or Delete is then added down in the
// doNonAtomicBatchOp call. We should be staying aligned though the Put and Delete are
// deferred/batched
List mutations = null;
long maxQuotaResultSize = Math.min(maxScannerResultSize, quota.getReadAvailable());
IOException sizeIOE = null;
ClientProtos.ResultOrException.Builder resultOrExceptionBuilder =
ResultOrException.newBuilder();
boolean hasResultOrException = false;
for (ClientProtos.Action action : actions.getActionList()) {
hasResultOrException = false;
resultOrExceptionBuilder.clear();
try {
Result r = null;
long blockBytesScannedBefore = context != null ? context.getBlockBytesScanned() : 0;
if (
context != null && context.isRetryImmediatelySupported()
&& (context.getResponseCellSize() > maxQuotaResultSize
|| blockBytesScannedBefore + context.getResponseExceptionSize() > maxQuotaResultSize)
) {
// We're storing the exception since the exception and reason string won't
// change after the response size limit is reached.
if (sizeIOE == null) {
// We don't need the stack un-winding do don't throw the exception.
// Throwing will kill the JVM's JIT.
//
// Instead just create the exception and then store it.
sizeIOE = new MultiActionResultTooLarge("Max size exceeded" + " CellSize: "
+ context.getResponseCellSize() + " BlockSize: " + blockBytesScannedBefore);
// Only report the exception once since there's only one request that
// caused the exception. Otherwise this number will dominate the exceptions count.
rpcServer.getMetrics().exception(sizeIOE);
}
// Now that there's an exception is known to be created
// use it for the response.
//
// This will create a copy in the builder.
NameBytesPair pair = ResponseConverter.buildException(sizeIOE);
resultOrExceptionBuilder.setException(pair);
context.incrementResponseExceptionSize(pair.getSerializedSize());
resultOrExceptionBuilder.setIndex(action.getIndex());
builder.addResultOrException(resultOrExceptionBuilder.build());
skipCellsForMutation(action, cellScanner);
continue;
}
if (action.hasGet()) {
long before = EnvironmentEdgeManager.currentTime();
ClientProtos.Get pbGet = action.getGet();
// An asynchbase client, https://github.com/OpenTSDB/asynchbase, starts by trying to do
// a get closest before. Throwing the UnknownProtocolException signals it that it needs
// to switch and do hbase2 protocol (HBase servers do not tell clients what versions
// they are; its a problem for non-native clients like asynchbase. HBASE-20225.
if (pbGet.hasClosestRowBefore() && pbGet.getClosestRowBefore()) {
throw new UnknownProtocolException("Is this a pre-hbase-1.0.0 or asynchbase client? "
+ "Client is invoking getClosestRowBefore removed in hbase-2.0.0 replaced by "
+ "reverse Scan.");
}
try {
Get get = ProtobufUtil.toGet(pbGet);
if (context != null) {
r = get(get, (region), closeCallBack, context);
} else {
r = region.get(get);
}
} finally {
final MetricsRegionServer metricsRegionServer = server.getMetrics();
if (metricsRegionServer != null) {
long blockBytesScanned =
context != null ? context.getBlockBytesScanned() - blockBytesScannedBefore : 0;
metricsRegionServer.updateGet(region, EnvironmentEdgeManager.currentTime() - before,
blockBytesScanned);
}
}
} else if (action.hasServiceCall()) {
hasResultOrException = true;
Message result = execServiceOnRegion(region, action.getServiceCall());
ClientProtos.CoprocessorServiceResult.Builder serviceResultBuilder =
ClientProtos.CoprocessorServiceResult.newBuilder();
resultOrExceptionBuilder.setServiceResult(serviceResultBuilder
.setValue(serviceResultBuilder.getValueBuilder().setName(result.getClass().getName())
// TODO: Copy!!!
.setValue(UnsafeByteOperations.unsafeWrap(result.toByteArray()))));
} else if (action.hasMutation()) {
MutationType type = action.getMutation().getMutateType();
if (
type != MutationType.PUT && type != MutationType.DELETE && mutations != null
&& !mutations.isEmpty()
) {
// Flush out any Puts or Deletes already collected.
doNonAtomicBatchOp(builder, region, quota, mutations, cellScanner,
spaceQuotaEnforcement);
mutations.clear();
}
switch (type) {
case APPEND:
r = append(region, quota, action.getMutation(), cellScanner, nonceGroup,
spaceQuotaEnforcement, context);
break;
case INCREMENT:
r = increment(region, quota, action.getMutation(), cellScanner, nonceGroup,
spaceQuotaEnforcement, context);
break;
case PUT:
case DELETE:
// Collect the individual mutations and apply in a batch
if (mutations == null) {
mutations = new ArrayList<>(actions.getActionCount());
}
mutations.add(action);
break;
default:
throw new DoNotRetryIOException("Unsupported mutate type: " + type.name());
}
} else {
throw new HBaseIOException("Unexpected Action type");
}
if (r != null) {
ClientProtos.Result pbResult = null;
if (isClientCellBlockSupport(context)) {
pbResult = ProtobufUtil.toResultNoData(r);
// Hard to guess the size here. Just make a rough guess.
if (cellsToReturn == null) {
cellsToReturn = new ArrayList<>();
}
cellsToReturn.add(r);
} else {
pbResult = ProtobufUtil.toResult(r);
}
addSize(context, r);
hasResultOrException = true;
resultOrExceptionBuilder.setResult(pbResult);
}
// Could get to here and there was no result and no exception. Presumes we added
// a Put or Delete to the collecting Mutations List for adding later. In this
// case the corresponding ResultOrException instance for the Put or Delete will be added
// down in the doNonAtomicBatchOp method call rather than up here.
} catch (IOException ie) {
rpcServer.getMetrics().exception(ie);
hasResultOrException = true;
NameBytesPair pair = ResponseConverter.buildException(ie);
resultOrExceptionBuilder.setException(pair);
context.incrementResponseExceptionSize(pair.getSerializedSize());
}
if (hasResultOrException) {
// Propagate index.
resultOrExceptionBuilder.setIndex(action.getIndex());
builder.addResultOrException(resultOrExceptionBuilder.build());
}
}
// Finish up any outstanding mutations
if (!CollectionUtils.isEmpty(mutations)) {
doNonAtomicBatchOp(builder, region, quota, mutations, cellScanner, spaceQuotaEnforcement);
}
return cellsToReturn;
}
private void checkCellSizeLimit(final HRegion r, final Mutation m) throws IOException {
if (r.maxCellSize > 0) {
CellScanner cells = m.cellScanner();
while (cells.advance()) {
int size = PrivateCellUtil.estimatedSerializedSizeOf(cells.current());
if (size > r.maxCellSize) {
String msg = "Cell[" + cells.current() + "] with size " + size + " exceeds limit of "
+ r.maxCellSize + " bytes";
LOG.debug(msg);
throw new DoNotRetryIOException(msg);
}
}
}
}
private void doAtomicBatchOp(final RegionActionResult.Builder builder, final HRegion region,
final OperationQuota quota, final List mutations, final CellScanner cells,
long nonceGroup, ActivePolicyEnforcement spaceQuotaEnforcement) throws IOException {
// Just throw the exception. The exception will be caught and then added to region-level
// exception for RegionAction. Leaving the null to action result is ok since the null
// result is viewed as failure by hbase client. And the region-lever exception will be used
// to replaced the null result. see AsyncRequestFutureImpl#receiveMultiAction and
// AsyncBatchRpcRetryingCaller#onComplete for more details.
doBatchOp(builder, region, quota, mutations, cells, nonceGroup, spaceQuotaEnforcement, true);
}
private void doNonAtomicBatchOp(final RegionActionResult.Builder builder, final HRegion region,
final OperationQuota quota, final List mutations, final CellScanner cells,
ActivePolicyEnforcement spaceQuotaEnforcement) {
try {
doBatchOp(builder, region, quota, mutations, cells, HConstants.NO_NONCE,
spaceQuotaEnforcement, false);
} catch (IOException e) {
// Set the exception for each action. The mutations in same RegionAction are group to
// different batch and then be processed individually. Hence, we don't set the region-level
// exception here for whole RegionAction.
for (Action mutation : mutations) {
builder.addResultOrException(getResultOrException(e, mutation.getIndex()));
}
}
}
/**
* Execute a list of mutations.
*/
private void doBatchOp(final RegionActionResult.Builder builder, final HRegion region,
final OperationQuota quota, final List mutations, final CellScanner cells,
long nonceGroup, ActivePolicyEnforcement spaceQuotaEnforcement, boolean atomic)
throws IOException {
Mutation[] mArray = new Mutation[mutations.size()];
long before = EnvironmentEdgeManager.currentTime();
boolean batchContainsPuts = false, batchContainsDelete = false;
try {
/**
* HBASE-17924 mutationActionMap is a map to map the relation between mutations and actions
* since mutation array may have been reoredered.In order to return the right result or
* exception to the corresponding actions, We need to know which action is the mutation belong
* to. We can't sort ClientProtos.Action array, since they are bonded to cellscanners.
*/
Map mutationActionMap = new HashMap<>();
int i = 0;
long nonce = HConstants.NO_NONCE;
for (ClientProtos.Action action : mutations) {
if (action.hasGet()) {
throw new DoNotRetryIOException(
"Atomic put and/or delete only, not a Get=" + action.getGet());
}
MutationProto m = action.getMutation();
Mutation mutation;
switch (m.getMutateType()) {
case PUT:
mutation = ProtobufUtil.toPut(m, cells);
batchContainsPuts = true;
break;
case DELETE:
mutation = ProtobufUtil.toDelete(m, cells);
batchContainsDelete = true;
break;
case INCREMENT:
mutation = ProtobufUtil.toIncrement(m, cells);
nonce = m.hasNonce() ? m.getNonce() : HConstants.NO_NONCE;
break;
case APPEND:
mutation = ProtobufUtil.toAppend(m, cells);
nonce = m.hasNonce() ? m.getNonce() : HConstants.NO_NONCE;
break;
default:
throw new DoNotRetryIOException("Invalid mutation type : " + m.getMutateType());
}
mutationActionMap.put(mutation, action);
mArray[i++] = mutation;
checkCellSizeLimit(region, mutation);
// Check if a space quota disallows this mutation
spaceQuotaEnforcement.getPolicyEnforcement(region).check(mutation);
quota.addMutation(mutation);
}
if (!region.getRegionInfo().isMetaRegion()) {
server.getMemStoreFlusher().reclaimMemStoreMemory();
}
// HBASE-17924
// Sort to improve lock efficiency for non-atomic batch of operations. If atomic
// order is preserved as its expected from the client
if (!atomic) {
Arrays.sort(mArray, (v1, v2) -> Row.COMPARATOR.compare(v1, v2));
}
OperationStatus[] codes = region.batchMutate(mArray, atomic, nonceGroup, nonce);
// When atomic is true, it indicates that the mutateRow API or the batch API with
// RowMutations is called. In this case, we need to merge the results of the
// Increment/Append operations if the mutations include those operations, and set the merged
// result to the first element of the ResultOrException list
if (atomic) {
List resultOrExceptions = new ArrayList<>();
List results = new ArrayList<>();
for (i = 0; i < codes.length; i++) {
if (codes[i].getResult() != null) {
results.add(codes[i].getResult());
}
if (i != 0) {
resultOrExceptions
.add(getResultOrException(ClientProtos.Result.getDefaultInstance(), i));
}
}
if (results.isEmpty()) {
builder.addResultOrException(
getResultOrException(ClientProtos.Result.getDefaultInstance(), 0));
} else {
// Merge the results of the Increment/Append operations
List cellList = new ArrayList<>();
for (Result result : results) {
if (result.rawCells() != null) {
cellList.addAll(Arrays.asList(result.rawCells()));
}
}
Result result = Result.create(cellList);
// Set the merged result of the Increment/Append operations to the first element of the
// ResultOrException list
builder.addResultOrException(getResultOrException(ProtobufUtil.toResult(result), 0));
}
builder.addAllResultOrException(resultOrExceptions);
return;
}
for (i = 0; i < codes.length; i++) {
Mutation currentMutation = mArray[i];
ClientProtos.Action currentAction = mutationActionMap.get(currentMutation);
int index = currentAction.hasIndex() ? currentAction.getIndex() : i;
Exception e;
switch (codes[i].getOperationStatusCode()) {
case BAD_FAMILY:
e = new NoSuchColumnFamilyException(codes[i].getExceptionMsg());
builder.addResultOrException(getResultOrException(e, index));
break;
case SANITY_CHECK_FAILURE:
e = new FailedSanityCheckException(codes[i].getExceptionMsg());
builder.addResultOrException(getResultOrException(e, index));
break;
default:
e = new DoNotRetryIOException(codes[i].getExceptionMsg());
builder.addResultOrException(getResultOrException(e, index));
break;
case SUCCESS:
builder.addResultOrException(
getResultOrException(ClientProtos.Result.getDefaultInstance(), index));
break;
case STORE_TOO_BUSY:
e = new RegionTooBusyException(codes[i].getExceptionMsg());
builder.addResultOrException(getResultOrException(e, index));
break;
}
}
} finally {
int processedMutationIndex = 0;
for (Action mutation : mutations) {
// The non-null mArray[i] means the cell scanner has been read.
if (mArray[processedMutationIndex++] == null) {
skipCellsForMutation(mutation, cells);
}
}
updateMutationMetrics(region, before, batchContainsPuts, batchContainsDelete);
}
}
private void updateMutationMetrics(HRegion region, long starttime, boolean batchContainsPuts,
boolean batchContainsDelete) {
final MetricsRegionServer metricsRegionServer = server.getMetrics();
if (metricsRegionServer != null) {
long after = EnvironmentEdgeManager.currentTime();
if (batchContainsPuts) {
metricsRegionServer.updatePutBatch(region, after - starttime);
}
if (batchContainsDelete) {
metricsRegionServer.updateDeleteBatch(region, after - starttime);
}
}
}
/**
* Execute a list of Put/Delete mutations. The function returns OperationStatus instead of
* constructing MultiResponse to save a possible loop if caller doesn't need MultiResponse.
* @return an array of OperationStatus which internally contains the OperationStatusCode and the
* exceptionMessage if any
* @deprecated Since 3.0.0, will be removed in 4.0.0. We do not use this method for replaying
* edits for secondary replicas any more, see
* {@link #replicateToReplica(RpcController, ReplicateWALEntryRequest)}.
*/
@Deprecated
private OperationStatus[] doReplayBatchOp(final HRegion region,
final List mutations, long replaySeqId) throws IOException {
long before = EnvironmentEdgeManager.currentTime();
boolean batchContainsPuts = false, batchContainsDelete = false;
try {
for (Iterator it = mutations.iterator(); it.hasNext();) {
MutationReplay m = it.next();
if (m.getType() == MutationType.PUT) {
batchContainsPuts = true;
} else {
batchContainsDelete = true;
}
NavigableMap> map = m.mutation.getFamilyCellMap();
List metaCells = map.get(WALEdit.METAFAMILY);
if (metaCells != null && !metaCells.isEmpty()) {
for (Cell metaCell : metaCells) {
CompactionDescriptor compactionDesc = WALEdit.getCompaction(metaCell);
boolean isDefaultReplica = RegionReplicaUtil.isDefaultReplica(region.getRegionInfo());
HRegion hRegion = region;
if (compactionDesc != null) {
// replay the compaction. Remove the files from stores only if we are the primary
// region replica (thus own the files)
hRegion.replayWALCompactionMarker(compactionDesc, !isDefaultReplica, isDefaultReplica,
replaySeqId);
continue;
}
FlushDescriptor flushDesc = WALEdit.getFlushDescriptor(metaCell);
if (flushDesc != null && !isDefaultReplica) {
hRegion.replayWALFlushMarker(flushDesc, replaySeqId);
continue;
}
RegionEventDescriptor regionEvent = WALEdit.getRegionEventDescriptor(metaCell);
if (regionEvent != null && !isDefaultReplica) {
hRegion.replayWALRegionEventMarker(regionEvent);
continue;
}
BulkLoadDescriptor bulkLoadEvent = WALEdit.getBulkLoadDescriptor(metaCell);
if (bulkLoadEvent != null) {
hRegion.replayWALBulkLoadEventMarker(bulkLoadEvent);
continue;
}
}
it.remove();
}
}
requestCount.increment();
if (!region.getRegionInfo().isMetaRegion()) {
server.getMemStoreFlusher().reclaimMemStoreMemory();
}
return region.batchReplay(mutations.toArray(new MutationReplay[mutations.size()]),
replaySeqId);
} finally {
updateMutationMetrics(region, before, batchContainsPuts, batchContainsDelete);
}
}
private void closeAllScanners() {
// Close any outstanding scanners. Means they'll get an UnknownScanner
// exception next time they come in.
for (Map.Entry e : scanners.entrySet()) {
try {
e.getValue().s.close();
} catch (IOException ioe) {
LOG.warn("Closing scanner " + e.getKey(), ioe);
}
}
}
// Directly invoked only for testing
public RSRpcServices(final HRegionServer rs) throws IOException {
super(rs, rs.getProcessName());
final Configuration conf = rs.getConfiguration();
setReloadableGuardrails(conf);
scannerLeaseTimeoutPeriod = conf.getInt(HConstants.HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD,
HConstants.DEFAULT_HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD);
rpcTimeout =
conf.getInt(HConstants.HBASE_RPC_TIMEOUT_KEY, HConstants.DEFAULT_HBASE_RPC_TIMEOUT);
minimumScanTimeLimitDelta = conf.getLong(REGION_SERVER_RPC_MINIMUM_SCAN_TIME_LIMIT_DELTA,
DEFAULT_REGION_SERVER_RPC_MINIMUM_SCAN_TIME_LIMIT_DELTA);
rpcServer.setNamedQueueRecorder(rs.getNamedQueueRecorder());
closedScanners = CacheBuilder.newBuilder()
.expireAfterAccess(scannerLeaseTimeoutPeriod, TimeUnit.MILLISECONDS).build();
}
@Override
protected boolean defaultReservoirEnabled() {
return true;
}
@Override
protected ServerType getDNSServerType() {
return DNS.ServerType.REGIONSERVER;
}
@Override
protected String getHostname(Configuration conf, String defaultHostname) {
return conf.get("hbase.regionserver.ipc.address", defaultHostname);
}
@Override
protected String getPortConfigName() {
return HConstants.REGIONSERVER_PORT;
}
@Override
protected int getDefaultPort() {
return HConstants.DEFAULT_REGIONSERVER_PORT;
}
@Override
protected Class getRpcSchedulerFactoryClass(Configuration conf) {
return conf.getClass(REGION_SERVER_RPC_SCHEDULER_FACTORY_CLASS,
SimpleRpcSchedulerFactory.class);
}
protected RpcServerInterface createRpcServer(final Server server,
final RpcSchedulerFactory rpcSchedulerFactory, final InetSocketAddress bindAddress,
final String name) throws IOException {
final Configuration conf = server.getConfiguration();
boolean reservoirEnabled = conf.getBoolean(ByteBuffAllocator.ALLOCATOR_POOL_ENABLED_KEY, true);
try {
return RpcServerFactory.createRpcServer(server, name, getServices(), bindAddress, // use final
// bindAddress
// for this
// server.
conf, rpcSchedulerFactory.create(conf, this, server), reservoirEnabled);
} catch (BindException be) {
throw new IOException(be.getMessage() + ". To switch ports use the '"
+ HConstants.REGIONSERVER_PORT + "' configuration property.",
be.getCause() != null ? be.getCause() : be);
}
}
protected Class getRpcSchedulerFactoryClass() {
final Configuration conf = server.getConfiguration();
return conf.getClass(REGION_SERVER_RPC_SCHEDULER_FACTORY_CLASS,
SimpleRpcSchedulerFactory.class);
}
protected PriorityFunction createPriority() {
return new RSAnnotationReadingPriorityFunction(this);
}
public int getScannersCount() {
return scanners.size();
}
/** Returns The outstanding RegionScanner for scannerId or null if none found. */
RegionScanner getScanner(long scannerId) {
RegionScannerHolder rsh = getRegionScannerHolder(scannerId);
return rsh == null ? null : rsh.s;
}
/** Returns The associated RegionScannerHolder for scannerId or null. */
private RegionScannerHolder getRegionScannerHolder(long scannerId) {
return scanners.get(toScannerName(scannerId));
}
public String getScanDetailsWithId(long scannerId) {
RegionScanner scanner = getScanner(scannerId);
if (scanner == null) {
return null;
}
StringBuilder builder = new StringBuilder();
builder.append("table: ").append(scanner.getRegionInfo().getTable().getNameAsString());
builder.append(" region: ").append(scanner.getRegionInfo().getRegionNameAsString());
builder.append(" operation_id: ").append(scanner.getOperationId());
return builder.toString();
}
public String getScanDetailsWithRequest(ScanRequest request) {
try {
if (!request.hasRegion()) {
return null;
}
Region region = getRegion(request.getRegion());
StringBuilder builder = new StringBuilder();
builder.append("table: ").append(region.getRegionInfo().getTable().getNameAsString());
builder.append(" region: ").append(region.getRegionInfo().getRegionNameAsString());
for (NameBytesPair pair : request.getScan().getAttributeList()) {
if (OperationWithAttributes.ID_ATRIBUTE.equals(pair.getName())) {
builder.append(" operation_id: ").append(Bytes.toString(pair.getValue().toByteArray()));
break;
}
}
return builder.toString();
} catch (IOException ignored) {
return null;
}
}
/**
* Get the vtime associated with the scanner. Currently the vtime is the number of "next" calls.
*/
long getScannerVirtualTime(long scannerId) {
RegionScannerHolder rsh = getRegionScannerHolder(scannerId);
return rsh == null ? 0L : rsh.getNextCallSeq();
}
/**
* Method to account for the size of retained cells.
* @param context rpc call context
* @param r result to add size.
* @return an object that represents the last referenced block from this response.
*/
void addSize(RpcCallContext context, Result r) {
if (context != null && r != null && !r.isEmpty()) {
for (Cell c : r.rawCells()) {
context.incrementResponseCellSize(PrivateCellUtil.estimatedSerializedSizeOf(c));
}
}
}
/** Returns Remote client's ip and port else null if can't be determined. */
@RestrictedApi(explanation = "Should only be called in TestRSRpcServices and RSRpcServices",
link = "", allowedOnPath = ".*(TestRSRpcServices|RSRpcServices).java")
static String getRemoteClientIpAndPort() {
RpcCall rpcCall = RpcServer.getCurrentCall().orElse(null);
if (rpcCall == null) {
return HConstants.EMPTY_STRING;
}
InetAddress address = rpcCall.getRemoteAddress();
if (address == null) {
return HConstants.EMPTY_STRING;
}
// Be careful here with InetAddress. Do InetAddress#getHostAddress. It will not do a name
// resolution. Just use the IP. It is generally a smaller amount of info to keep around while
// scanning than a hostname anyways.
return Address.fromParts(address.getHostAddress(), rpcCall.getRemotePort()).toString();
}
/** Returns Remote client's username. */
@RestrictedApi(explanation = "Should only be called in TestRSRpcServices and RSRpcServices",
link = "", allowedOnPath = ".*(TestRSRpcServices|RSRpcServices).java")
static String getUserName() {
RpcCall rpcCall = RpcServer.getCurrentCall().orElse(null);
if (rpcCall == null) {
return HConstants.EMPTY_STRING;
}
return rpcCall.getRequestUserName().orElse(HConstants.EMPTY_STRING);
}
private RegionScannerHolder addScanner(String scannerName, RegionScanner s, Shipper shipper,
HRegion r, boolean needCursor, boolean fullRegionScan) throws LeaseStillHeldException {
Lease lease = server.getLeaseManager().createLease(scannerName, this.scannerLeaseTimeoutPeriod,
new ScannerListener(scannerName));
RpcCallback shippedCallback = new RegionScannerShippedCallBack(scannerName, shipper, lease);
RpcCallback closeCallback =
s instanceof RpcCallback ? (RpcCallback) s : new RegionScannerCloseCallBack(s);
RegionScannerHolder rsh = new RegionScannerHolder(s, r, closeCallback, shippedCallback,
needCursor, fullRegionScan, getRemoteClientIpAndPort(), getUserName());
RegionScannerHolder existing = scanners.putIfAbsent(scannerName, rsh);
assert existing == null : "scannerId must be unique within regionserver's whole lifecycle! "
+ scannerName + ", " + existing;
return rsh;
}
private boolean isFullRegionScan(Scan scan, HRegion region) {
// If the scan start row equals or less than the start key of the region
// and stop row greater than equals end key (if stop row present)
// or if the stop row is empty
// account this as a full region scan
if (
Bytes.compareTo(scan.getStartRow(), region.getRegionInfo().getStartKey()) <= 0
&& (Bytes.compareTo(scan.getStopRow(), region.getRegionInfo().getEndKey()) >= 0
&& !Bytes.equals(region.getRegionInfo().getEndKey(), HConstants.EMPTY_END_ROW)
|| Bytes.equals(scan.getStopRow(), HConstants.EMPTY_END_ROW))
) {
return true;
}
return false;
}
/**
* Find the HRegion based on a region specifier
* @param regionSpecifier the region specifier
* @return the corresponding region
* @throws IOException if the specifier is not null, but failed to find the region
*/
public HRegion getRegion(final RegionSpecifier regionSpecifier) throws IOException {
return server.getRegion(regionSpecifier.getValue().toByteArray());
}
/**
* Find the List of HRegions based on a list of region specifiers
* @param regionSpecifiers the list of region specifiers
* @return the corresponding list of regions
* @throws IOException if any of the specifiers is not null, but failed to find the region
*/
private List getRegions(final List regionSpecifiers,
final CacheEvictionStatsBuilder stats) {
List regions = Lists.newArrayListWithCapacity(regionSpecifiers.size());
for (RegionSpecifier regionSpecifier : regionSpecifiers) {
try {
regions.add(server.getRegion(regionSpecifier.getValue().toByteArray()));
} catch (NotServingRegionException e) {
stats.addException(regionSpecifier.getValue().toByteArray(), e);
}
}
return regions;
}
PriorityFunction getPriority() {
return priority;
}
private RegionServerRpcQuotaManager getRpcQuotaManager() {
return server.getRegionServerRpcQuotaManager();
}
private RegionServerSpaceQuotaManager getSpaceQuotaManager() {
return server.getRegionServerSpaceQuotaManager();
}
void start(ZKWatcher zkWatcher) {
this.scannerIdGenerator = new ScannerIdGenerator(this.server.getServerName());
internalStart(zkWatcher);
}
void stop() {
closeAllScanners();
internalStop();
}
/**
* Called to verify that this server is up and running.
*/
// TODO : Rename this and HMaster#checkInitialized to isRunning() (or a better name).
protected void checkOpen() throws IOException {
if (server.isAborted()) {
throw new RegionServerAbortedException("Server " + server.getServerName() + " aborting");
}
if (server.isStopped()) {
throw new RegionServerStoppedException("Server " + server.getServerName() + " stopping");
}
if (!server.isDataFileSystemOk()) {
throw new RegionServerStoppedException("File system not available");
}
if (!server.isOnline()) {
throw new ServerNotRunningYetException(
"Server " + server.getServerName() + " is not running yet");
}
}
/**
* By default, put up an Admin and a Client Service. Set booleans
* hbase.regionserver.admin.executorService and
* hbase.regionserver.client.executorService if you want to enable/disable services.
* Default is that both are enabled.
* @return immutable list of blocking services and the security info classes that this server
* supports
*/
protected List getServices() {
boolean admin = getConfiguration().getBoolean(REGIONSERVER_ADMIN_SERVICE_CONFIG, true);
boolean client = getConfiguration().getBoolean(REGIONSERVER_CLIENT_SERVICE_CONFIG, true);
boolean clientMeta =
getConfiguration().getBoolean(REGIONSERVER_CLIENT_META_SERVICE_CONFIG, true);
List bssi = new ArrayList<>();
if (client) {
bssi.add(new BlockingServiceAndInterface(ClientService.newReflectiveBlockingService(this),
ClientService.BlockingInterface.class));
}
if (admin) {
bssi.add(new BlockingServiceAndInterface(AdminService.newReflectiveBlockingService(this),
AdminService.BlockingInterface.class));
}
if (clientMeta) {
bssi.add(new BlockingServiceAndInterface(ClientMetaService.newReflectiveBlockingService(this),
ClientMetaService.BlockingInterface.class));
}
return new ImmutableList.Builder().addAll(bssi).build();
}
/**
* Close a region on the region server.
* @param controller the RPC controller
* @param request the request
*/
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public CloseRegionResponse closeRegion(final RpcController controller,
final CloseRegionRequest request) throws ServiceException {
final ServerName sn = (request.hasDestinationServer()
? ProtobufUtil.toServerName(request.getDestinationServer())
: null);
try {
checkOpen();
throwOnWrongStartCode(request);
final String encodedRegionName = ProtobufUtil.getRegionEncodedName(request.getRegion());
requestCount.increment();
if (sn == null) {
LOG.info("Close " + encodedRegionName + " without moving");
} else {
LOG.info("Close " + encodedRegionName + ", moving to " + sn);
}
boolean closed = server.closeRegion(encodedRegionName, false, sn);
CloseRegionResponse.Builder builder = CloseRegionResponse.newBuilder().setClosed(closed);
return builder.build();
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
/**
* Compact a region on the region server.
* @param controller the RPC controller
* @param request the request
*/
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public CompactRegionResponse compactRegion(final RpcController controller,
final CompactRegionRequest request) throws ServiceException {
try {
checkOpen();
requestCount.increment();
HRegion region = getRegion(request.getRegion());
// Quota support is enabled, the requesting user is not system/super user
// and a quota policy is enforced that disables compactions.
if (
QuotaUtil.isQuotaEnabled(getConfiguration())
&& !Superusers.isSuperUser(RpcServer.getRequestUser().orElse(null))
&& this.server.getRegionServerSpaceQuotaManager()
.areCompactionsDisabled(region.getTableDescriptor().getTableName())
) {
throw new DoNotRetryIOException(
"Compactions on this region are " + "disabled due to a space quota violation.");
}
region.startRegionOperation(Operation.COMPACT_REGION);
LOG.info("Compacting " + region.getRegionInfo().getRegionNameAsString());
boolean major = request.hasMajor() && request.getMajor();
if (request.hasFamily()) {
byte[] family = request.getFamily().toByteArray();
String log = "User-triggered " + (major ? "major " : "") + "compaction for region "
+ region.getRegionInfo().getRegionNameAsString() + " and family "
+ Bytes.toString(family);
LOG.trace(log);
region.requestCompaction(family, log, Store.PRIORITY_USER, major,
CompactionLifeCycleTracker.DUMMY);
} else {
String log = "User-triggered " + (major ? "major " : "") + "compaction for region "
+ region.getRegionInfo().getRegionNameAsString();
LOG.trace(log);
region.requestCompaction(log, Store.PRIORITY_USER, major, CompactionLifeCycleTracker.DUMMY);
}
return CompactRegionResponse.newBuilder().build();
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
@Override
public CompactionSwitchResponse compactionSwitch(RpcController controller,
CompactionSwitchRequest request) throws ServiceException {
rpcPreCheck("compactionSwitch");
final CompactSplit compactSplitThread = server.getCompactSplitThread();
requestCount.increment();
boolean prevState = compactSplitThread.isCompactionsEnabled();
CompactionSwitchResponse response =
CompactionSwitchResponse.newBuilder().setPrevState(prevState).build();
if (prevState == request.getEnabled()) {
// passed in requested state is same as current state. No action required
return response;
}
compactSplitThread.switchCompaction(request.getEnabled());
return response;
}
/**
* Flush a region on the region server.
* @param controller the RPC controller
* @param request the request
*/
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public FlushRegionResponse flushRegion(final RpcController controller,
final FlushRegionRequest request) throws ServiceException {
try {
checkOpen();
requestCount.increment();
HRegion region = getRegion(request.getRegion());
LOG.info("Flushing " + region.getRegionInfo().getRegionNameAsString());
boolean shouldFlush = true;
if (request.hasIfOlderThanTs()) {
shouldFlush = region.getEarliestFlushTimeForAllStores() < request.getIfOlderThanTs();
}
FlushRegionResponse.Builder builder = FlushRegionResponse.newBuilder();
if (shouldFlush) {
boolean writeFlushWalMarker =
request.hasWriteFlushWalMarker() ? request.getWriteFlushWalMarker() : false;
// Go behind the curtain so we can manage writing of the flush WAL marker
HRegion.FlushResultImpl flushResult = null;
if (request.hasFamily()) {
List families = new ArrayList();
families.add(request.getFamily().toByteArray());
flushResult =
region.flushcache(families, writeFlushWalMarker, FlushLifeCycleTracker.DUMMY);
} else {
flushResult = region.flushcache(true, writeFlushWalMarker, FlushLifeCycleTracker.DUMMY);
}
boolean compactionNeeded = flushResult.isCompactionNeeded();
if (compactionNeeded) {
server.getCompactSplitThread().requestSystemCompaction(region,
"Compaction through user triggered flush");
}
builder.setFlushed(flushResult.isFlushSucceeded());
builder.setWroteFlushWalMarker(flushResult.wroteFlushWalMarker);
}
builder.setLastFlushTime(region.getEarliestFlushTimeForAllStores());
return builder.build();
} catch (DroppedSnapshotException ex) {
// Cache flush can fail in a few places. If it fails in a critical
// section, we get a DroppedSnapshotException and a replay of wal
// is required. Currently the only way to do this is a restart of
// the server.
server.abort("Replay of WAL required. Forcing server shutdown", ex);
throw new ServiceException(ex);
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public GetOnlineRegionResponse getOnlineRegion(final RpcController controller,
final GetOnlineRegionRequest request) throws ServiceException {
try {
checkOpen();
requestCount.increment();
Map onlineRegions = server.getOnlineRegions();
List list = new ArrayList<>(onlineRegions.size());
for (HRegion region : onlineRegions.values()) {
list.add(region.getRegionInfo());
}
list.sort(RegionInfo.COMPARATOR);
return ResponseConverter.buildGetOnlineRegionResponse(list);
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
// Master implementation of this Admin Service differs given it is not
// able to supply detail only known to RegionServer. See note on
// MasterRpcServers#getRegionInfo.
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public GetRegionInfoResponse getRegionInfo(final RpcController controller,
final GetRegionInfoRequest request) throws ServiceException {
try {
checkOpen();
requestCount.increment();
HRegion region = getRegion(request.getRegion());
RegionInfo info = region.getRegionInfo();
byte[] bestSplitRow;
if (request.hasBestSplitRow() && request.getBestSplitRow()) {
bestSplitRow = region.checkSplit(true).orElse(null);
// when all table data are in memstore, bestSplitRow = null
// try to flush region first
if (bestSplitRow == null) {
region.flush(true);
bestSplitRow = region.checkSplit(true).orElse(null);
}
} else {
bestSplitRow = null;
}
GetRegionInfoResponse.Builder builder = GetRegionInfoResponse.newBuilder();
builder.setRegionInfo(ProtobufUtil.toRegionInfo(info));
if (request.hasCompactionState() && request.getCompactionState()) {
builder.setCompactionState(ProtobufUtil.createCompactionState(region.getCompactionState()));
}
builder.setSplittable(region.isSplittable());
builder.setMergeable(region.isMergeable());
if (request.hasBestSplitRow() && request.getBestSplitRow() && bestSplitRow != null) {
builder.setBestSplitRow(UnsafeByteOperations.unsafeWrap(bestSplitRow));
}
return builder.build();
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public GetRegionLoadResponse getRegionLoad(RpcController controller, GetRegionLoadRequest request)
throws ServiceException {
List regions;
if (request.hasTableName()) {
TableName tableName = ProtobufUtil.toTableName(request.getTableName());
regions = server.getRegions(tableName);
} else {
regions = server.getRegions();
}
List rLoads = new ArrayList<>(regions.size());
RegionLoad.Builder regionLoadBuilder = ClusterStatusProtos.RegionLoad.newBuilder();
RegionSpecifier.Builder regionSpecifier = RegionSpecifier.newBuilder();
try {
for (HRegion region : regions) {
rLoads.add(server.createRegionLoad(region, regionLoadBuilder, regionSpecifier));
}
} catch (IOException e) {
throw new ServiceException(e);
}
GetRegionLoadResponse.Builder builder = GetRegionLoadResponse.newBuilder();
builder.addAllRegionLoads(rLoads);
return builder.build();
}
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public ClearCompactionQueuesResponse clearCompactionQueues(RpcController controller,
ClearCompactionQueuesRequest request) throws ServiceException {
LOG.debug("Client=" + RpcServer.getRequestUserName().orElse(null) + "/"
+ RpcServer.getRemoteAddress().orElse(null) + " clear compactions queue");
ClearCompactionQueuesResponse.Builder respBuilder = ClearCompactionQueuesResponse.newBuilder();
requestCount.increment();
if (clearCompactionQueues.compareAndSet(false, true)) {
final CompactSplit compactSplitThread = server.getCompactSplitThread();
try {
checkOpen();
server.getRegionServerCoprocessorHost().preClearCompactionQueues();
for (String queueName : request.getQueueNameList()) {
LOG.debug("clear " + queueName + " compaction queue");
switch (queueName) {
case "long":
compactSplitThread.clearLongCompactionsQueue();
break;
case "short":
compactSplitThread.clearShortCompactionsQueue();
break;
default:
LOG.warn("Unknown queue name " + queueName);
throw new IOException("Unknown queue name " + queueName);
}
}
server.getRegionServerCoprocessorHost().postClearCompactionQueues();
} catch (IOException ie) {
throw new ServiceException(ie);
} finally {
clearCompactionQueues.set(false);
}
} else {
LOG.warn("Clear compactions queue is executing by other admin.");
}
return respBuilder.build();
}
/**
* Get some information of the region server.
* @param controller the RPC controller
* @param request the request
*/
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public GetServerInfoResponse getServerInfo(final RpcController controller,
final GetServerInfoRequest request) throws ServiceException {
try {
checkOpen();
} catch (IOException ie) {
throw new ServiceException(ie);
}
requestCount.increment();
int infoPort = server.getInfoServer() != null ? server.getInfoServer().getPort() : -1;
return ResponseConverter.buildGetServerInfoResponse(server.getServerName(), infoPort);
}
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public GetStoreFileResponse getStoreFile(final RpcController controller,
final GetStoreFileRequest request) throws ServiceException {
try {
checkOpen();
HRegion region = getRegion(request.getRegion());
requestCount.increment();
Set columnFamilies;
if (request.getFamilyCount() == 0) {
columnFamilies = region.getTableDescriptor().getColumnFamilyNames();
} else {
columnFamilies = new TreeSet<>(Bytes.BYTES_RAWCOMPARATOR);
for (ByteString cf : request.getFamilyList()) {
columnFamilies.add(cf.toByteArray());
}
}
int nCF = columnFamilies.size();
List fileList = region.getStoreFileList(columnFamilies.toArray(new byte[nCF][]));
GetStoreFileResponse.Builder builder = GetStoreFileResponse.newBuilder();
builder.addAllStoreFile(fileList);
return builder.build();
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
private void throwOnWrongStartCode(OpenRegionRequest request) throws ServiceException {
if (!request.hasServerStartCode()) {
LOG.warn("OpenRegionRequest for {} does not have a start code", request.getOpenInfoList());
return;
}
throwOnWrongStartCode(request.getServerStartCode());
}
private void throwOnWrongStartCode(CloseRegionRequest request) throws ServiceException {
if (!request.hasServerStartCode()) {
LOG.warn("CloseRegionRequest for {} does not have a start code", request.getRegion());
return;
}
throwOnWrongStartCode(request.getServerStartCode());
}
private void throwOnWrongStartCode(long serverStartCode) throws ServiceException {
// check that we are the same server that this RPC is intended for.
if (server.getServerName().getStartcode() != serverStartCode) {
throw new ServiceException(new DoNotRetryIOException(
"This RPC was intended for a " + "different server with startCode: " + serverStartCode
+ ", this server is: " + server.getServerName()));
}
}
private void throwOnWrongStartCode(ExecuteProceduresRequest req) throws ServiceException {
if (req.getOpenRegionCount() > 0) {
for (OpenRegionRequest openReq : req.getOpenRegionList()) {
throwOnWrongStartCode(openReq);
}
}
if (req.getCloseRegionCount() > 0) {
for (CloseRegionRequest closeReq : req.getCloseRegionList()) {
throwOnWrongStartCode(closeReq);
}
}
}
/**
* Open asynchronously a region or a set of regions on the region server. The opening is
* coordinated by ZooKeeper, and this method requires the znode to be created before being called.
* As a consequence, this method should be called only from the master.
*
* Different manages states for the region are:
*
*
* - region not opened: the region opening will start asynchronously.
* - a close is already in progress: this is considered as an error.
* - an open is already in progress: this new open request will be ignored. This is important
* because the Master can do multiple requests if it crashes.
* - the region is already opened: this new open request will be ignored.
*
*
* Bulk assign: If there are more than 1 region to open, it will be considered as a bulk assign.
* For a single region opening, errors are sent through a ServiceException. For bulk assign,
* errors are put in the response as FAILED_OPENING.
*
* @param controller the RPC controller
* @param request the request
*/
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public OpenRegionResponse openRegion(final RpcController controller,
final OpenRegionRequest request) throws ServiceException {
requestCount.increment();
throwOnWrongStartCode(request);
OpenRegionResponse.Builder builder = OpenRegionResponse.newBuilder();
final int regionCount = request.getOpenInfoCount();
final Map htds = new HashMap<>(regionCount);
final boolean isBulkAssign = regionCount > 1;
try {
checkOpen();
} catch (IOException ie) {
TableName tableName = null;
if (regionCount == 1) {
org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo ri =
request.getOpenInfo(0).getRegion();
if (ri != null) {
tableName = ProtobufUtil.toTableName(ri.getTableName());
}
}
if (!TableName.META_TABLE_NAME.equals(tableName)) {
throw new ServiceException(ie);
}
// We are assigning meta, wait a little for regionserver to finish initialization.
// Default to quarter of RPC timeout
int timeout = server.getConfiguration().getInt(HConstants.HBASE_RPC_TIMEOUT_KEY,
HConstants.DEFAULT_HBASE_RPC_TIMEOUT) >> 2;
long endTime = EnvironmentEdgeManager.currentTime() + timeout;
synchronized (server.online) {
try {
while (
EnvironmentEdgeManager.currentTime() <= endTime && !server.isStopped()
&& !server.isOnline()
) {
server.online.wait(server.getMsgInterval());
}
checkOpen();
} catch (InterruptedException t) {
Thread.currentThread().interrupt();
throw new ServiceException(t);
} catch (IOException e) {
throw new ServiceException(e);
}
}
}
long masterSystemTime = request.hasMasterSystemTime() ? request.getMasterSystemTime() : -1;
for (RegionOpenInfo regionOpenInfo : request.getOpenInfoList()) {
final RegionInfo region = ProtobufUtil.toRegionInfo(regionOpenInfo.getRegion());
TableDescriptor htd;
try {
String encodedName = region.getEncodedName();
byte[] encodedNameBytes = region.getEncodedNameAsBytes();
final HRegion onlineRegion = server.getRegion(encodedName);
if (onlineRegion != null) {
// The region is already online. This should not happen any more.
String error = "Received OPEN for the region:" + region.getRegionNameAsString()
+ ", which is already online";
LOG.warn(error);
// server.abort(error);
// throw new IOException(error);
builder.addOpeningState(RegionOpeningState.OPENED);
continue;
}
LOG.info("Open " + region.getRegionNameAsString());
final Boolean previous =
server.getRegionsInTransitionInRS().putIfAbsent(encodedNameBytes, Boolean.TRUE);
if (Boolean.FALSE.equals(previous)) {
if (server.getRegion(encodedName) != null) {
// There is a close in progress. This should not happen any more.
String error = "Received OPEN for the region:" + region.getRegionNameAsString()
+ ", which we are already trying to CLOSE";
server.abort(error);
throw new IOException(error);
}
server.getRegionsInTransitionInRS().put(encodedNameBytes, Boolean.TRUE);
}
if (Boolean.TRUE.equals(previous)) {
// An open is in progress. This is supported, but let's log this.
LOG.info("Receiving OPEN for the region:" + region.getRegionNameAsString()
+ ", which we are already trying to OPEN"
+ " - ignoring this new request for this region.");
}
// We are opening this region. If it moves back and forth for whatever reason, we don't
// want to keep returning the stale moved record while we are opening/if we close again.
server.removeFromMovedRegions(region.getEncodedName());
if (previous == null || !previous.booleanValue()) {
htd = htds.get(region.getTable());
if (htd == null) {
htd = server.getTableDescriptors().get(region.getTable());
htds.put(region.getTable(), htd);
}
if (htd == null) {
throw new IOException("Missing table descriptor for " + region.getEncodedName());
}
// If there is no action in progress, we can submit a specific handler.
// Need to pass the expected version in the constructor.
if (server.getExecutorService() == null) {
LOG.info("No executor executorService; skipping open request");
} else {
if (region.isMetaRegion()) {
server.getExecutorService()
.submit(new OpenMetaHandler(server, server, region, htd, masterSystemTime));
} else {
if (regionOpenInfo.getFavoredNodesCount() > 0) {
server.updateRegionFavoredNodesMapping(region.getEncodedName(),
regionOpenInfo.getFavoredNodesList());
}
if (htd.getPriority() >= HConstants.ADMIN_QOS || region.getTable().isSystemTable()) {
server.getExecutorService().submit(
new OpenPriorityRegionHandler(server, server, region, htd, masterSystemTime));
} else {
server.getExecutorService()
.submit(new OpenRegionHandler(server, server, region, htd, masterSystemTime));
}
}
}
}
builder.addOpeningState(RegionOpeningState.OPENED);
} catch (IOException ie) {
LOG.warn("Failed opening region " + region.getRegionNameAsString(), ie);
if (isBulkAssign) {
builder.addOpeningState(RegionOpeningState.FAILED_OPENING);
} else {
throw new ServiceException(ie);
}
}
}
return builder.build();
}
/**
* Warmup a region on this server. This method should only be called by Master. It synchronously
* opens the region and closes the region bringing the most important pages in cache.
*/
@Override
public WarmupRegionResponse warmupRegion(final RpcController controller,
final WarmupRegionRequest request) throws ServiceException {
final RegionInfo region = ProtobufUtil.toRegionInfo(request.getRegionInfo());
WarmupRegionResponse response = WarmupRegionResponse.getDefaultInstance();
try {
checkOpen();
String encodedName = region.getEncodedName();
byte[] encodedNameBytes = region.getEncodedNameAsBytes();
final HRegion onlineRegion = server.getRegion(encodedName);
if (onlineRegion != null) {
LOG.info("{} is online; skipping warmup", region);
return response;
}
TableDescriptor htd = server.getTableDescriptors().get(region.getTable());
if (server.getRegionsInTransitionInRS().containsKey(encodedNameBytes)) {
LOG.info("{} is in transition; skipping warmup", region);
return response;
}
LOG.info("Warmup {}", region.getRegionNameAsString());
HRegion.warmupHRegion(region, htd, server.getWAL(region), server.getConfiguration(), server,
null);
} catch (IOException ie) {
LOG.error("Failed warmup of {}", region.getRegionNameAsString(), ie);
throw new ServiceException(ie);
}
return response;
}
private CellScanner getAndReset(RpcController controller) {
HBaseRpcController hrc = (HBaseRpcController) controller;
CellScanner cells = hrc.cellScanner();
hrc.setCellScanner(null);
return cells;
}
/**
* Replay the given changes when distributedLogReplay WAL edits from a failed RS. The guarantee is
* that the given mutations will be durable on the receiving RS if this method returns without any
* exception.
* @param controller the RPC controller
* @param request the request
* @deprecated Since 3.0.0, will be removed in 4.0.0. Not used any more, put here only for
* compatibility with old region replica implementation. Now we will use
* {@code replicateToReplica} method instead.
*/
@Deprecated
@Override
@QosPriority(priority = HConstants.REPLAY_QOS)
public ReplicateWALEntryResponse replay(final RpcController controller,
final ReplicateWALEntryRequest request) throws ServiceException {
long before = EnvironmentEdgeManager.currentTime();
CellScanner cells = getAndReset(controller);
try {
checkOpen();
List entries = request.getEntryList();
if (entries == null || entries.isEmpty()) {
// empty input
return ReplicateWALEntryResponse.newBuilder().build();
}
ByteString regionName = entries.get(0).getKey().getEncodedRegionName();
HRegion region = server.getRegionByEncodedName(regionName.toStringUtf8());
RegionCoprocessorHost coprocessorHost =
ServerRegionReplicaUtil.isDefaultReplica(region.getRegionInfo())
? region.getCoprocessorHost()
: null; // do not invoke coprocessors if this is a secondary region replica
List> walEntries = new ArrayList<>();
// Skip adding the edits to WAL if this is a secondary region replica
boolean isPrimary = RegionReplicaUtil.isDefaultReplica(region.getRegionInfo());
Durability durability = isPrimary ? Durability.USE_DEFAULT : Durability.SKIP_WAL;
for (WALEntry entry : entries) {
if (!regionName.equals(entry.getKey().getEncodedRegionName())) {
throw new NotServingRegionException("Replay request contains entries from multiple "
+ "regions. First region:" + regionName.toStringUtf8() + " , other region:"
+ entry.getKey().getEncodedRegionName());
}
if (server.nonceManager != null && isPrimary) {
long nonceGroup =
entry.getKey().hasNonceGroup() ? entry.getKey().getNonceGroup() : HConstants.NO_NONCE;
long nonce = entry.getKey().hasNonce() ? entry.getKey().getNonce() : HConstants.NO_NONCE;
server.nonceManager.reportOperationFromWal(nonceGroup, nonce,
entry.getKey().getWriteTime());
}
Pair walEntry = (coprocessorHost == null) ? null : new Pair<>();
List edits =
WALSplitUtil.getMutationsFromWALEntry(entry, cells, walEntry, durability);
if (coprocessorHost != null) {
// Start coprocessor replay here. The coprocessor is for each WALEdit instead of a
// KeyValue.
if (
coprocessorHost.preWALRestore(region.getRegionInfo(), walEntry.getFirst(),
walEntry.getSecond())
) {
// if bypass this log entry, ignore it ...
continue;
}
walEntries.add(walEntry);
}
if (edits != null && !edits.isEmpty()) {
// HBASE-17924
// sort to improve lock efficiency
Collections.sort(edits, (v1, v2) -> Row.COMPARATOR.compare(v1.mutation, v2.mutation));
long replaySeqId = (entry.getKey().hasOrigSequenceNumber())
? entry.getKey().getOrigSequenceNumber()
: entry.getKey().getLogSequenceNumber();
OperationStatus[] result = doReplayBatchOp(region, edits, replaySeqId);
// check if it's a partial success
for (int i = 0; result != null && i < result.length; i++) {
if (result[i] != OperationStatus.SUCCESS) {
throw new IOException(result[i].getExceptionMsg());
}
}
}
}
// sync wal at the end because ASYNC_WAL is used above
WAL wal = region.getWAL();
if (wal != null) {
wal.sync();
}
if (coprocessorHost != null) {
for (Pair entry : walEntries) {
coprocessorHost.postWALRestore(region.getRegionInfo(), entry.getFirst(),
entry.getSecond());
}
}
return ReplicateWALEntryResponse.newBuilder().build();
} catch (IOException ie) {
throw new ServiceException(ie);
} finally {
final MetricsRegionServer metricsRegionServer = server.getMetrics();
if (metricsRegionServer != null) {
metricsRegionServer.updateReplay(EnvironmentEdgeManager.currentTime() - before);
}
}
}
/**
* Replay the given changes on a secondary replica
*/
@Override
public ReplicateWALEntryResponse replicateToReplica(RpcController controller,
ReplicateWALEntryRequest request) throws ServiceException {
CellScanner cells = getAndReset(controller);
try {
checkOpen();
List entries = request.getEntryList();
if (entries == null || entries.isEmpty()) {
// empty input
return ReplicateWALEntryResponse.newBuilder().build();
}
ByteString regionName = entries.get(0).getKey().getEncodedRegionName();
HRegion region = server.getRegionByEncodedName(regionName.toStringUtf8());
if (RegionReplicaUtil.isDefaultReplica(region.getRegionInfo())) {
throw new DoNotRetryIOException(
"Should not replicate to primary replica " + region.getRegionInfo() + ", CODE BUG?");
}
for (WALEntry entry : entries) {
if (!regionName.equals(entry.getKey().getEncodedRegionName())) {
throw new NotServingRegionException(
"ReplicateToReplica request contains entries from multiple " + "regions. First region:"
+ regionName.toStringUtf8() + " , other region:"
+ entry.getKey().getEncodedRegionName());
}
region.replayWALEntry(entry, cells);
}
return ReplicateWALEntryResponse.newBuilder().build();
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
private void checkShouldRejectReplicationRequest(List entries) throws IOException {
ReplicationSourceService replicationSource = server.getReplicationSourceService();
if (replicationSource == null || entries.isEmpty()) {
return;
}
// We can ensure that all entries are for one peer, so only need to check one entry's
// table name. if the table hit sync replication at peer side and the peer cluster
// is (or is transiting to) state ACTIVE or DOWNGRADE_ACTIVE, we should reject to apply
// those entries according to the design doc.
TableName table = TableName.valueOf(entries.get(0).getKey().getTableName().toByteArray());
if (
replicationSource.getSyncReplicationPeerInfoProvider().checkState(table,
RejectReplicationRequestStateChecker.get())
) {
throw new DoNotRetryIOException(
"Reject to apply to sink cluster because sync replication state of sink cluster "
+ "is ACTIVE or DOWNGRADE_ACTIVE, table: " + table);
}
}
/**
* Replicate WAL entries on the region server.
* @param controller the RPC controller
* @param request the request
*/
@Override
@QosPriority(priority = HConstants.REPLICATION_QOS)
public ReplicateWALEntryResponse replicateWALEntry(final RpcController controller,
final ReplicateWALEntryRequest request) throws ServiceException {
try {
checkOpen();
if (server.getReplicationSinkService() != null) {
requestCount.increment();
List entries = request.getEntryList();
checkShouldRejectReplicationRequest(entries);
CellScanner cellScanner = getAndReset(controller);
server.getRegionServerCoprocessorHost().preReplicateLogEntries();
server.getReplicationSinkService().replicateLogEntries(entries, cellScanner,
request.getReplicationClusterId(), request.getSourceBaseNamespaceDirPath(),
request.getSourceHFileArchiveDirPath());
server.getRegionServerCoprocessorHost().postReplicateLogEntries();
return ReplicateWALEntryResponse.newBuilder().build();
} else {
throw new ServiceException("Replication services are not initialized yet");
}
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
/**
* Roll the WAL writer of the region server.
* @param controller the RPC controller
* @param request the request
*/
@Override
public RollWALWriterResponse rollWALWriter(final RpcController controller,
final RollWALWriterRequest request) throws ServiceException {
try {
checkOpen();
requestCount.increment();
server.getRegionServerCoprocessorHost().preRollWALWriterRequest();
server.getWalRoller().requestRollAll();
server.getRegionServerCoprocessorHost().postRollWALWriterRequest();
RollWALWriterResponse.Builder builder = RollWALWriterResponse.newBuilder();
return builder.build();
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
/**
* Stop the region server.
* @param controller the RPC controller
* @param request the request
*/
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public StopServerResponse stopServer(final RpcController controller,
final StopServerRequest request) throws ServiceException {
rpcPreCheck("stopServer");
requestCount.increment();
String reason = request.getReason();
server.stop(reason);
return StopServerResponse.newBuilder().build();
}
@Override
public UpdateFavoredNodesResponse updateFavoredNodes(RpcController controller,
UpdateFavoredNodesRequest request) throws ServiceException {
rpcPreCheck("updateFavoredNodes");
List openInfoList = request.getUpdateInfoList();
UpdateFavoredNodesResponse.Builder respBuilder = UpdateFavoredNodesResponse.newBuilder();
for (UpdateFavoredNodesRequest.RegionUpdateInfo regionUpdateInfo : openInfoList) {
RegionInfo hri = ProtobufUtil.toRegionInfo(regionUpdateInfo.getRegion());
if (regionUpdateInfo.getFavoredNodesCount() > 0) {
server.updateRegionFavoredNodesMapping(hri.getEncodedName(),
regionUpdateInfo.getFavoredNodesList());
}
}
respBuilder.setResponse(openInfoList.size());
return respBuilder.build();
}
/**
* Atomically bulk load several HFiles into an open region
* @return true if successful, false is failed but recoverably (no action)
* @throws ServiceException if failed unrecoverably
*/
@Override
public BulkLoadHFileResponse bulkLoadHFile(final RpcController controller,
final BulkLoadHFileRequest request) throws ServiceException {
long start = EnvironmentEdgeManager.currentTime();
List clusterIds = new ArrayList<>(request.getClusterIdsList());
if (clusterIds.contains(this.server.getClusterId())) {
return BulkLoadHFileResponse.newBuilder().setLoaded(true).build();
} else {
clusterIds.add(this.server.getClusterId());
}
try {
checkOpen();
requestCount.increment();
HRegion region = getRegion(request.getRegion());
final boolean spaceQuotaEnabled = QuotaUtil.isQuotaEnabled(getConfiguration());
long sizeToBeLoaded = -1;
// Check to see if this bulk load would exceed the space quota for this table
if (spaceQuotaEnabled) {
ActivePolicyEnforcement activeSpaceQuotas = getSpaceQuotaManager().getActiveEnforcements();
SpaceViolationPolicyEnforcement enforcement =
activeSpaceQuotas.getPolicyEnforcement(region);
if (enforcement != null) {
// Bulk loads must still be atomic. We must enact all or none.
List filePaths = new ArrayList<>(request.getFamilyPathCount());
for (FamilyPath familyPath : request.getFamilyPathList()) {
filePaths.add(familyPath.getPath());
}
// Check if the batch of files exceeds the current quota
sizeToBeLoaded = enforcement.computeBulkLoadSize(getFileSystem(filePaths), filePaths);
}
}
// secure bulk load
Map> map =
server.getSecureBulkLoadManager().secureBulkLoadHFiles(region, request, clusterIds);
BulkLoadHFileResponse.Builder builder = BulkLoadHFileResponse.newBuilder();
builder.setLoaded(map != null);
if (map != null) {
// Treat any negative size as a flag to "ignore" updating the region size as that is
// not possible to occur in real life (cannot bulk load a file with negative size)
if (spaceQuotaEnabled && sizeToBeLoaded > 0) {
if (LOG.isTraceEnabled()) {
LOG.trace("Incrementing space use of " + region.getRegionInfo() + " by "
+ sizeToBeLoaded + " bytes");
}
// Inform space quotas of the new files for this region
getSpaceQuotaManager().getRegionSizeStore().incrementRegionSize(region.getRegionInfo(),
sizeToBeLoaded);
}
}
return builder.build();
} catch (IOException ie) {
throw new ServiceException(ie);
} finally {
final MetricsRegionServer metricsRegionServer = server.getMetrics();
if (metricsRegionServer != null) {
metricsRegionServer.updateBulkLoad(EnvironmentEdgeManager.currentTime() - start);
}
}
}
@Override
public PrepareBulkLoadResponse prepareBulkLoad(RpcController controller,
PrepareBulkLoadRequest request) throws ServiceException {
try {
checkOpen();
requestCount.increment();
HRegion region = getRegion(request.getRegion());
String bulkToken = server.getSecureBulkLoadManager().prepareBulkLoad(region, request);
PrepareBulkLoadResponse.Builder builder = PrepareBulkLoadResponse.newBuilder();
builder.setBulkToken(bulkToken);
return builder.build();
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
@Override
public CleanupBulkLoadResponse cleanupBulkLoad(RpcController controller,
CleanupBulkLoadRequest request) throws ServiceException {
try {
checkOpen();
requestCount.increment();
HRegion region = getRegion(request.getRegion());
server.getSecureBulkLoadManager().cleanupBulkLoad(region, request);
return CleanupBulkLoadResponse.newBuilder().build();
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
@Override
public CoprocessorServiceResponse execService(final RpcController controller,
final CoprocessorServiceRequest request) throws ServiceException {
try {
checkOpen();
requestCount.increment();
HRegion region = getRegion(request.getRegion());
Message result = execServiceOnRegion(region, request.getCall());
CoprocessorServiceResponse.Builder builder = CoprocessorServiceResponse.newBuilder();
builder.setRegion(RequestConverter.buildRegionSpecifier(RegionSpecifierType.REGION_NAME,
region.getRegionInfo().getRegionName()));
// TODO: COPIES!!!!!!
builder.setValue(builder.getValueBuilder().setName(result.getClass().getName()).setValue(
org.apache.hbase.thirdparty.com.google.protobuf.ByteString.copyFrom(result.toByteArray())));
return builder.build();
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
private FileSystem getFileSystem(List filePaths) throws IOException {
if (filePaths.isEmpty()) {
// local hdfs
return server.getFileSystem();
}
// source hdfs
return new Path(filePaths.get(0)).getFileSystem(server.getConfiguration());
}
private Message execServiceOnRegion(HRegion region,
final ClientProtos.CoprocessorServiceCall serviceCall) throws IOException {
// ignore the passed in controller (from the serialized call)
ServerRpcController execController = new ServerRpcController();
return region.execService(execController, serviceCall);
}
private boolean shouldRejectRequestsFromClient(HRegion region) {
TableName table = region.getRegionInfo().getTable();
ReplicationSourceService service = server.getReplicationSourceService();
return service != null && service.getSyncReplicationPeerInfoProvider().checkState(table,
RejectRequestsFromClientStateChecker.get());
}
private void rejectIfInStandByState(HRegion region) throws DoNotRetryIOException {
if (shouldRejectRequestsFromClient(region)) {
throw new DoNotRetryIOException(
region.getRegionInfo().getRegionNameAsString() + " is in STANDBY state.");
}
}
/**
* Get data from a table.
* @param controller the RPC controller
* @param request the get request
*/
@Override
public GetResponse get(final RpcController controller, final GetRequest request)
throws ServiceException {
long before = EnvironmentEdgeManager.currentTime();
OperationQuota quota = null;
HRegion region = null;
RpcCallContext context = RpcServer.getCurrentCall().orElse(null);
try {
checkOpen();
requestCount.increment();
rpcGetRequestCount.increment();
region = getRegion(request.getRegion());
rejectIfInStandByState(region);
GetResponse.Builder builder = GetResponse.newBuilder();
ClientProtos.Get get = request.getGet();
// An asynchbase client, https://github.com/OpenTSDB/asynchbase, starts by trying to do
// a get closest before. Throwing the UnknownProtocolException signals it that it needs
// to switch and do hbase2 protocol (HBase servers do not tell clients what versions
// they are; its a problem for non-native clients like asynchbase. HBASE-20225.
if (get.hasClosestRowBefore() && get.getClosestRowBefore()) {
throw new UnknownProtocolException("Is this a pre-hbase-1.0.0 or asynchbase client? "
+ "Client is invoking getClosestRowBefore removed in hbase-2.0.0 replaced by "
+ "reverse Scan.");
}
Boolean existence = null;
Result r = null;
quota = getRpcQuotaManager().checkQuota(region, OperationQuota.OperationType.GET);
Get clientGet = ProtobufUtil.toGet(get);
if (get.getExistenceOnly() && region.getCoprocessorHost() != null) {
existence = region.getCoprocessorHost().preExists(clientGet);
}
if (existence == null) {
if (context != null) {
r = get(clientGet, (region), null, context);
} else {
// for test purpose
r = region.get(clientGet);
}
if (get.getExistenceOnly()) {
boolean exists = r.getExists();
if (region.getCoprocessorHost() != null) {
exists = region.getCoprocessorHost().postExists(clientGet, exists);
}
existence = exists;
}
}
if (existence != null) {
ClientProtos.Result pbr =
ProtobufUtil.toResult(existence, region.getRegionInfo().getReplicaId() != 0);
builder.setResult(pbr);
} else if (r != null) {
ClientProtos.Result pbr;
if (
isClientCellBlockSupport(context) && controller instanceof HBaseRpcController
&& VersionInfoUtil.hasMinimumVersion(context.getClientVersionInfo(), 1, 3)
) {
pbr = ProtobufUtil.toResultNoData(r);
((HBaseRpcController) controller)
.setCellScanner(CellUtil.createCellScanner(r.rawCells()));
addSize(context, r);
} else {
pbr = ProtobufUtil.toResult(r);
}
builder.setResult(pbr);
}
// r.cells is null when an table.exists(get) call
if (r != null && r.rawCells() != null) {
quota.addGetResult(r);
}
return builder.build();
} catch (IOException ie) {
throw new ServiceException(ie);
} finally {
final MetricsRegionServer metricsRegionServer = server.getMetrics();
if (metricsRegionServer != null && region != null) {
long blockBytesScanned = context != null ? context.getBlockBytesScanned() : 0;
metricsRegionServer.updateGet(region, EnvironmentEdgeManager.currentTime() - before,
blockBytesScanned);
}
if (quota != null) {
quota.close();
}
}
}
private Result get(Get get, HRegion region, RegionScannersCloseCallBack closeCallBack,
RpcCallContext context) throws IOException {
region.prepareGet(get);
boolean stale = region.getRegionInfo().getReplicaId() != 0;
// This method is almost the same as HRegion#get.
List results = new ArrayList<>();
long before = EnvironmentEdgeManager.currentTime();
// pre-get CP hook
if (region.getCoprocessorHost() != null) {
if (region.getCoprocessorHost().preGet(get, results)) {
region.metricsUpdateForGet(results, before);
return Result.create(results, get.isCheckExistenceOnly() ? !results.isEmpty() : null,
stale);
}
}
Scan scan = new Scan(get);
if (scan.getLoadColumnFamiliesOnDemandValue() == null) {
scan.setLoadColumnFamiliesOnDemand(region.isLoadingCfsOnDemandDefault());
}
RegionScannerImpl scanner = null;
try {
scanner = region.getScanner(scan);
scanner.next(results);
} finally {
if (scanner != null) {
if (closeCallBack == null) {
// If there is a context then the scanner can be added to the current
// RpcCallContext. The rpc callback will take care of closing the
// scanner, for eg in case
// of get()
context.setCallBack(scanner);
} else {
// The call is from multi() where the results from the get() are
// aggregated and then send out to the
// rpc. The rpccall back will close all such scanners created as part
// of multi().
closeCallBack.addScanner(scanner);
}
}
}
// post-get CP hook
if (region.getCoprocessorHost() != null) {
region.getCoprocessorHost().postGet(get, results);
}
region.metricsUpdateForGet(results, before);
return Result.create(results, get.isCheckExistenceOnly() ? !results.isEmpty() : null, stale);
}
private void checkBatchSizeAndLogLargeSize(MultiRequest request) throws ServiceException {
int sum = 0;
String firstRegionName = null;
for (RegionAction regionAction : request.getRegionActionList()) {
if (sum == 0) {
firstRegionName = Bytes.toStringBinary(regionAction.getRegion().getValue().toByteArray());
}
sum += regionAction.getActionCount();
}
if (sum > rowSizeWarnThreshold) {
LOG.warn("Large batch operation detected (greater than " + rowSizeWarnThreshold
+ ") (HBASE-18023)." + " Requested Number of Rows: " + sum + " Client: "
+ RpcServer.getRequestUserName().orElse(null) + "/"
+ RpcServer.getRemoteAddress().orElse(null) + " first region in multi=" + firstRegionName);
if (rejectRowsWithSizeOverThreshold) {
throw new ServiceException(
"Rejecting large batch operation for current batch with firstRegionName: "
+ firstRegionName + " , Requested Number of Rows: " + sum + " , Size Threshold: "
+ rowSizeWarnThreshold);
}
}
}
private void failRegionAction(MultiResponse.Builder responseBuilder,
RegionActionResult.Builder regionActionResultBuilder, RegionAction regionAction,
CellScanner cellScanner, Throwable error) {
rpcServer.getMetrics().exception(error);
regionActionResultBuilder.setException(ResponseConverter.buildException(error));
responseBuilder.addRegionActionResult(regionActionResultBuilder.build());
// All Mutations in this RegionAction not executed as we can not see the Region online here
// in this RS. Will be retried from Client. Skipping all the Cells in CellScanner
// corresponding to these Mutations.
if (cellScanner != null) {
skipCellsForMutations(regionAction.getActionList(), cellScanner);
}
}
private boolean isReplicationRequest(Action action) {
// replication request can only be put or delete.
if (!action.hasMutation()) {
return false;
}
MutationProto mutation = action.getMutation();
MutationType type = mutation.getMutateType();
if (type != MutationType.PUT && type != MutationType.DELETE) {
return false;
}
// replication will set a special attribute so we can make use of it to decide whether a request
// is for replication.
return mutation.getAttributeList().stream().map(p -> p.getName())
.filter(n -> n.equals(ReplicationUtils.REPLICATION_ATTR_NAME)).findAny().isPresent();
}
/**
* Execute multiple actions on a table: get, mutate, and/or execCoprocessor
* @param rpcc the RPC controller
* @param request the multi request
*/
@Override
public MultiResponse multi(final RpcController rpcc, final MultiRequest request)
throws ServiceException {
try {
checkOpen();
} catch (IOException ie) {
throw new ServiceException(ie);
}
checkBatchSizeAndLogLargeSize(request);
// rpc controller is how we bring in data via the back door; it is unprotobuf'ed data.
// It is also the conduit via which we pass back data.
HBaseRpcController controller = (HBaseRpcController) rpcc;
CellScanner cellScanner = controller != null ? controller.cellScanner() : null;
if (controller != null) {
controller.setCellScanner(null);
}
long nonceGroup = request.hasNonceGroup() ? request.getNonceGroup() : HConstants.NO_NONCE;
MultiResponse.Builder responseBuilder = MultiResponse.newBuilder();
RegionActionResult.Builder regionActionResultBuilder = RegionActionResult.newBuilder();
this.rpcMultiRequestCount.increment();
this.requestCount.increment();
ActivePolicyEnforcement spaceQuotaEnforcement = getSpaceQuotaManager().getActiveEnforcements();
// We no longer use MultiRequest#condition. Instead, we use RegionAction#condition. The
// following logic is for backward compatibility as old clients still use
// MultiRequest#condition in case of checkAndMutate with RowMutations.
if (request.hasCondition()) {
if (request.getRegionActionList().isEmpty()) {
// If the region action list is empty, do nothing.
responseBuilder.setProcessed(true);
return responseBuilder.build();
}
RegionAction regionAction = request.getRegionAction(0);
// When request.hasCondition() is true, regionAction.getAtomic() should be always true. So
// we can assume regionAction.getAtomic() is true here.
assert regionAction.getAtomic();
OperationQuota quota;
HRegion region;
RegionSpecifier regionSpecifier = regionAction.getRegion();
try {
region = getRegion(regionSpecifier);
quota = getRpcQuotaManager().checkQuota(region, regionAction.getActionList());
} catch (IOException e) {
failRegionAction(responseBuilder, regionActionResultBuilder, regionAction, cellScanner, e);
return responseBuilder.build();
}
try {
boolean rejectIfFromClient = shouldRejectRequestsFromClient(region);
// We only allow replication in standby state and it will not set the atomic flag.
if (rejectIfFromClient) {
failRegionAction(responseBuilder, regionActionResultBuilder, regionAction, cellScanner,
new DoNotRetryIOException(
region.getRegionInfo().getRegionNameAsString() + " is in STANDBY state"));
return responseBuilder.build();
}
try {
CheckAndMutateResult result = checkAndMutate(region, regionAction.getActionList(),
cellScanner, request.getCondition(), nonceGroup, spaceQuotaEnforcement);
responseBuilder.setProcessed(result.isSuccess());
ClientProtos.ResultOrException.Builder resultOrExceptionOrBuilder =
ClientProtos.ResultOrException.newBuilder();
for (int i = 0; i < regionAction.getActionCount(); i++) {
// To unify the response format with doNonAtomicRegionMutation and read through
// client's AsyncProcess we have to add an empty result instance per operation
resultOrExceptionOrBuilder.clear();
resultOrExceptionOrBuilder.setIndex(i);
regionActionResultBuilder.addResultOrException(resultOrExceptionOrBuilder.build());
}
} catch (IOException e) {
rpcServer.getMetrics().exception(e);
// As it's an atomic operation with a condition, we may expect it's a global failure.
regionActionResultBuilder.setException(ResponseConverter.buildException(e));
}
} finally {
quota.close();
}
responseBuilder.addRegionActionResult(regionActionResultBuilder.build());
ClientProtos.RegionLoadStats regionLoadStats = region.getLoadStatistics();
if (regionLoadStats != null) {
responseBuilder.setRegionStatistics(MultiRegionLoadStats.newBuilder()
.addRegion(regionSpecifier).addStat(regionLoadStats).build());
}
return responseBuilder.build();
}
// this will contain all the cells that we need to return. It's created later, if needed.
List cellsToReturn = null;
RegionScannersCloseCallBack closeCallBack = null;
RpcCallContext context = RpcServer.getCurrentCall().orElse(null);
Map regionStats =
new HashMap<>(request.getRegionActionCount());
for (RegionAction regionAction : request.getRegionActionList()) {
OperationQuota quota;
HRegion region;
RegionSpecifier regionSpecifier = regionAction.getRegion();
regionActionResultBuilder.clear();
try {
region = getRegion(regionSpecifier);
quota = getRpcQuotaManager().checkQuota(region, regionAction.getActionList());
} catch (IOException e) {
failRegionAction(responseBuilder, regionActionResultBuilder, regionAction, cellScanner, e);
continue; // For this region it's a failure.
}
try {
boolean rejectIfFromClient = shouldRejectRequestsFromClient(region);
if (regionAction.hasCondition()) {
// We only allow replication in standby state and it will not set the atomic flag.
if (rejectIfFromClient) {
failRegionAction(responseBuilder, regionActionResultBuilder, regionAction, cellScanner,
new DoNotRetryIOException(
region.getRegionInfo().getRegionNameAsString() + " is in STANDBY state"));
continue;
}
try {
ClientProtos.ResultOrException.Builder resultOrExceptionOrBuilder =
ClientProtos.ResultOrException.newBuilder();
if (regionAction.getActionCount() == 1) {
CheckAndMutateResult result =
checkAndMutate(region, quota, regionAction.getAction(0).getMutation(), cellScanner,
regionAction.getCondition(), nonceGroup, spaceQuotaEnforcement, context);
regionActionResultBuilder.setProcessed(result.isSuccess());
resultOrExceptionOrBuilder.setIndex(0);
if (result.getResult() != null) {
resultOrExceptionOrBuilder.setResult(ProtobufUtil.toResult(result.getResult()));
}
regionActionResultBuilder.addResultOrException(resultOrExceptionOrBuilder.build());
} else {
CheckAndMutateResult result = checkAndMutate(region, regionAction.getActionList(),
cellScanner, regionAction.getCondition(), nonceGroup, spaceQuotaEnforcement);
regionActionResultBuilder.setProcessed(result.isSuccess());
for (int i = 0; i < regionAction.getActionCount(); i++) {
if (i == 0 && result.getResult() != null) {
// Set the result of the Increment/Append operations to the first element of the
// ResultOrException list
resultOrExceptionOrBuilder.setIndex(i);
regionActionResultBuilder.addResultOrException(resultOrExceptionOrBuilder
.setResult(ProtobufUtil.toResult(result.getResult())).build());
continue;
}
// To unify the response format with doNonAtomicRegionMutation and read through
// client's AsyncProcess we have to add an empty result instance per operation
resultOrExceptionOrBuilder.clear();
resultOrExceptionOrBuilder.setIndex(i);
regionActionResultBuilder.addResultOrException(resultOrExceptionOrBuilder.build());
}
}
} catch (IOException e) {
rpcServer.getMetrics().exception(e);
// As it's an atomic operation with a condition, we may expect it's a global failure.
regionActionResultBuilder.setException(ResponseConverter.buildException(e));
}
} else if (regionAction.hasAtomic() && regionAction.getAtomic()) {
// We only allow replication in standby state and it will not set the atomic flag.
if (rejectIfFromClient) {
failRegionAction(responseBuilder, regionActionResultBuilder, regionAction, cellScanner,
new DoNotRetryIOException(
region.getRegionInfo().getRegionNameAsString() + " is in STANDBY state"));
continue;
}
try {
doAtomicBatchOp(regionActionResultBuilder, region, quota, regionAction.getActionList(),
cellScanner, nonceGroup, spaceQuotaEnforcement);
regionActionResultBuilder.setProcessed(true);
// We no longer use MultiResponse#processed. Instead, we use
// RegionActionResult#processed. This is for backward compatibility for old clients.
responseBuilder.setProcessed(true);
} catch (IOException e) {
rpcServer.getMetrics().exception(e);
// As it's atomic, we may expect it's a global failure.
regionActionResultBuilder.setException(ResponseConverter.buildException(e));
}
} else {
if (
rejectIfFromClient && regionAction.getActionCount() > 0
&& !isReplicationRequest(regionAction.getAction(0))
) {
// fail if it is not a replication request
failRegionAction(responseBuilder, regionActionResultBuilder, regionAction, cellScanner,
new DoNotRetryIOException(
region.getRegionInfo().getRegionNameAsString() + " is in STANDBY state"));
continue;
}
// doNonAtomicRegionMutation manages the exception internally
if (context != null && closeCallBack == null) {
// An RpcCallBack that creates a list of scanners that needs to perform callBack
// operation on completion of multiGets.
// Set this only once
closeCallBack = new RegionScannersCloseCallBack();
context.setCallBack(closeCallBack);
}
cellsToReturn = doNonAtomicRegionMutation(region, quota, regionAction, cellScanner,
regionActionResultBuilder, cellsToReturn, nonceGroup, closeCallBack, context,
spaceQuotaEnforcement);
}
} finally {
quota.close();
}
responseBuilder.addRegionActionResult(regionActionResultBuilder.build());
ClientProtos.RegionLoadStats regionLoadStats = region.getLoadStatistics();
if (regionLoadStats != null) {
regionStats.put(regionSpecifier, regionLoadStats);
}
}
// Load the controller with the Cells to return.
if (cellsToReturn != null && !cellsToReturn.isEmpty() && controller != null) {
controller.setCellScanner(CellUtil.createCellScanner(cellsToReturn));
}
MultiRegionLoadStats.Builder builder = MultiRegionLoadStats.newBuilder();
for (Entry stat : regionStats.entrySet()) {
builder.addRegion(stat.getKey());
builder.addStat(stat.getValue());
}
responseBuilder.setRegionStatistics(builder);
return responseBuilder.build();
}
private void skipCellsForMutations(List actions, CellScanner cellScanner) {
if (cellScanner == null) {
return;
}
for (Action action : actions) {
skipCellsForMutation(action, cellScanner);
}
}
private void skipCellsForMutation(Action action, CellScanner cellScanner) {
if (cellScanner == null) {
return;
}
try {
if (action.hasMutation()) {
MutationProto m = action.getMutation();
if (m.hasAssociatedCellCount()) {
for (int i = 0; i < m.getAssociatedCellCount(); i++) {
cellScanner.advance();
}
}
}
} catch (IOException e) {
// No need to handle these Individual Muatation level issue. Any way this entire RegionAction
// marked as failed as we could not see the Region here. At client side the top level
// RegionAction exception will be considered first.
LOG.error("Error while skipping Cells in CellScanner for invalid Region Mutations", e);
}
}
/**
* Mutate data in a table.
* @param rpcc the RPC controller
* @param request the mutate request
*/
@Override
public MutateResponse mutate(final RpcController rpcc, final MutateRequest request)
throws ServiceException {
// rpc controller is how we bring in data via the back door; it is unprotobuf'ed data.
// It is also the conduit via which we pass back data.
HBaseRpcController controller = (HBaseRpcController) rpcc;
CellScanner cellScanner = controller != null ? controller.cellScanner() : null;
OperationQuota quota = null;
RpcCallContext context = RpcServer.getCurrentCall().orElse(null);
// Clear scanner so we are not holding on to reference across call.
if (controller != null) {
controller.setCellScanner(null);
}
try {
checkOpen();
requestCount.increment();
rpcMutateRequestCount.increment();
HRegion region = getRegion(request.getRegion());
rejectIfInStandByState(region);
MutateResponse.Builder builder = MutateResponse.newBuilder();
MutationProto mutation = request.getMutation();
if (!region.getRegionInfo().isMetaRegion()) {
server.getMemStoreFlusher().reclaimMemStoreMemory();
}
long nonceGroup = request.hasNonceGroup() ? request.getNonceGroup() : HConstants.NO_NONCE;
quota = getRpcQuotaManager().checkQuota(region, OperationQuota.OperationType.MUTATE);
ActivePolicyEnforcement spaceQuotaEnforcement =
getSpaceQuotaManager().getActiveEnforcements();
if (request.hasCondition()) {
CheckAndMutateResult result = checkAndMutate(region, quota, mutation, cellScanner,
request.getCondition(), nonceGroup, spaceQuotaEnforcement, context);
builder.setProcessed(result.isSuccess());
boolean clientCellBlockSupported = isClientCellBlockSupport(context);
addResult(builder, result.getResult(), controller, clientCellBlockSupported);
if (clientCellBlockSupported) {
addSize(context, result.getResult());
}
} else {
Result r = null;
Boolean processed = null;
MutationType type = mutation.getMutateType();
switch (type) {
case APPEND:
// TODO: this doesn't actually check anything.
r = append(region, quota, mutation, cellScanner, nonceGroup, spaceQuotaEnforcement,
context);
break;
case INCREMENT:
// TODO: this doesn't actually check anything.
r = increment(region, quota, mutation, cellScanner, nonceGroup, spaceQuotaEnforcement,
context);
break;
case PUT:
put(region, quota, mutation, cellScanner, spaceQuotaEnforcement);
processed = Boolean.TRUE;
break;
case DELETE:
delete(region, quota, mutation, cellScanner, spaceQuotaEnforcement);
processed = Boolean.TRUE;
break;
default:
throw new DoNotRetryIOException("Unsupported mutate type: " + type.name());
}
if (processed != null) {
builder.setProcessed(processed);
}
boolean clientCellBlockSupported = isClientCellBlockSupport(context);
addResult(builder, r, controller, clientCellBlockSupported);
if (clientCellBlockSupported) {
addSize(context, r);
}
}
return builder.build();
} catch (IOException ie) {
server.checkFileSystem();
throw new ServiceException(ie);
} finally {
if (quota != null) {
quota.close();
}
}
}
private void put(HRegion region, OperationQuota quota, MutationProto mutation,
CellScanner cellScanner, ActivePolicyEnforcement spaceQuota) throws IOException {
long before = EnvironmentEdgeManager.currentTime();
Put put = ProtobufUtil.toPut(mutation, cellScanner);
checkCellSizeLimit(region, put);
spaceQuota.getPolicyEnforcement(region).check(put);
quota.addMutation(put);
region.put(put);
MetricsRegionServer metricsRegionServer = server.getMetrics();
if (metricsRegionServer != null) {
long after = EnvironmentEdgeManager.currentTime();
metricsRegionServer.updatePut(region, after - before);
}
}
private void delete(HRegion region, OperationQuota quota, MutationProto mutation,
CellScanner cellScanner, ActivePolicyEnforcement spaceQuota) throws IOException {
long before = EnvironmentEdgeManager.currentTime();
Delete delete = ProtobufUtil.toDelete(mutation, cellScanner);
checkCellSizeLimit(region, delete);
spaceQuota.getPolicyEnforcement(region).check(delete);
quota.addMutation(delete);
region.delete(delete);
MetricsRegionServer metricsRegionServer = server.getMetrics();
if (metricsRegionServer != null) {
long after = EnvironmentEdgeManager.currentTime();
metricsRegionServer.updateDelete(region, after - before);
}
}
private CheckAndMutateResult checkAndMutate(HRegion region, OperationQuota quota,
MutationProto mutation, CellScanner cellScanner, Condition condition, long nonceGroup,
ActivePolicyEnforcement spaceQuota, RpcCallContext context) throws IOException {
long before = EnvironmentEdgeManager.currentTime();
long blockBytesScannedBefore = context != null ? context.getBlockBytesScanned() : 0;
CheckAndMutate checkAndMutate = ProtobufUtil.toCheckAndMutate(condition, mutation, cellScanner);
long nonce = mutation.hasNonce() ? mutation.getNonce() : HConstants.NO_NONCE;
checkCellSizeLimit(region, (Mutation) checkAndMutate.getAction());
spaceQuota.getPolicyEnforcement(region).check((Mutation) checkAndMutate.getAction());
quota.addMutation((Mutation) checkAndMutate.getAction());
CheckAndMutateResult result = null;
if (region.getCoprocessorHost() != null) {
result = region.getCoprocessorHost().preCheckAndMutate(checkAndMutate);
}
if (result == null) {
result = region.checkAndMutate(checkAndMutate, nonceGroup, nonce);
if (region.getCoprocessorHost() != null) {
result = region.getCoprocessorHost().postCheckAndMutate(checkAndMutate, result);
}
}
MetricsRegionServer metricsRegionServer = server.getMetrics();
if (metricsRegionServer != null) {
long after = EnvironmentEdgeManager.currentTime();
long blockBytesScanned =
context != null ? context.getBlockBytesScanned() - blockBytesScannedBefore : 0;
metricsRegionServer.updateCheckAndMutate(region, after - before, blockBytesScanned);
MutationType type = mutation.getMutateType();
switch (type) {
case PUT:
metricsRegionServer.updateCheckAndPut(region, after - before);
break;
case DELETE:
metricsRegionServer.updateCheckAndDelete(region, after - before);
break;
default:
break;
}
}
return result;
}
// This is used to keep compatible with the old client implementation. Consider remove it if we
// decide to drop the support of the client that still sends close request to a region scanner
// which has already been exhausted.
@Deprecated
private static final IOException SCANNER_ALREADY_CLOSED = new IOException() {
private static final long serialVersionUID = -4305297078988180130L;
@Override
public synchronized Throwable fillInStackTrace() {
return this;
}
};
private RegionScannerHolder getRegionScanner(ScanRequest request) throws IOException {
String scannerName = toScannerName(request.getScannerId());
RegionScannerHolder rsh = this.scanners.get(scannerName);
if (rsh == null) {
// just ignore the next or close request if scanner does not exists.
if (closedScanners.getIfPresent(scannerName) != null) {
throw SCANNER_ALREADY_CLOSED;
} else {
LOG.warn("Client tried to access missing scanner " + scannerName);
throw new UnknownScannerException(
"Unknown scanner '" + scannerName + "'. This can happen due to any of the following "
+ "reasons: a) Scanner id given is wrong, b) Scanner lease expired because of "
+ "long wait between consecutive client checkins, c) Server may be closing down, "
+ "d) RegionServer restart during upgrade.\nIf the issue is due to reason (b), a "
+ "possible fix would be increasing the value of"
+ "'hbase.client.scanner.timeout.period' configuration.");
}
}
rejectIfInStandByState(rsh.r);
RegionInfo hri = rsh.s.getRegionInfo();
// Yes, should be the same instance
if (server.getOnlineRegion(hri.getRegionName()) != rsh.r) {
String msg = "Region has changed on the scanner " + scannerName + ": regionName="
+ hri.getRegionNameAsString() + ", scannerRegionName=" + rsh.r;
LOG.warn(msg + ", closing...");
scanners.remove(scannerName);
try {
rsh.s.close();
} catch (IOException e) {
LOG.warn("Getting exception closing " + scannerName, e);
} finally {
try {
server.getLeaseManager().cancelLease(scannerName);
} catch (LeaseException e) {
LOG.warn("Getting exception closing " + scannerName, e);
}
}
throw new NotServingRegionException(msg);
}
return rsh;
}
/**
* @return Pair with scannerName key to use with this new Scanner and its RegionScannerHolder
* value.
*/
private Pair newRegionScanner(ScanRequest request,
ScanResponse.Builder builder) throws IOException {
HRegion region = getRegion(request.getRegion());
rejectIfInStandByState(region);
ClientProtos.Scan protoScan = request.getScan();
boolean isLoadingCfsOnDemandSet = protoScan.hasLoadColumnFamiliesOnDemand();
Scan scan = ProtobufUtil.toScan(protoScan);
// if the request doesn't set this, get the default region setting.
if (!isLoadingCfsOnDemandSet) {
scan.setLoadColumnFamiliesOnDemand(region.isLoadingCfsOnDemandDefault());
}
if (!scan.hasFamilies()) {
// Adding all families to scanner
for (byte[] family : region.getTableDescriptor().getColumnFamilyNames()) {
scan.addFamily(family);
}
}
if (region.getCoprocessorHost() != null) {
// preScannerOpen is not allowed to return a RegionScanner. Only post hook can create a
// wrapper for the core created RegionScanner
region.getCoprocessorHost().preScannerOpen(scan);
}
RegionScannerImpl coreScanner = region.getScanner(scan);
Shipper shipper = coreScanner;
RegionScanner scanner = coreScanner;
try {
if (region.getCoprocessorHost() != null) {
scanner = region.getCoprocessorHost().postScannerOpen(scan, scanner);
}
} catch (Exception e) {
// Although region coprocessor is for advanced users and they should take care of the
// implementation to not damage the HBase system, closing the scanner on exception here does
// not have any bad side effect, so let's do it
scanner.close();
throw e;
}
long scannerId = scannerIdGenerator.generateNewScannerId();
builder.setScannerId(scannerId);
builder.setMvccReadPoint(scanner.getMvccReadPoint());
builder.setTtl(scannerLeaseTimeoutPeriod);
String scannerName = toScannerName(scannerId);
boolean fullRegionScan =
!region.getRegionInfo().getTable().isSystemTable() && isFullRegionScan(scan, region);
return new Pair(scannerName,
addScanner(scannerName, scanner, shipper, region, scan.isNeedCursorResult(), fullRegionScan));
}
/**
* The returned String is used as key doing look up of outstanding Scanners in this Servers'
* this.scanners, the Map of outstanding scanners and their current state.
* @param scannerId A scanner long id.
* @return The long id as a String.
*/
private static String toScannerName(long scannerId) {
return Long.toString(scannerId);
}
private void checkScanNextCallSeq(ScanRequest request, RegionScannerHolder rsh)
throws OutOfOrderScannerNextException {
// if nextCallSeq does not match throw Exception straight away. This needs to be
// performed even before checking of Lease.
// See HBASE-5974
if (request.hasNextCallSeq()) {
long callSeq = request.getNextCallSeq();
if (!rsh.incNextCallSeq(callSeq)) {
throw new OutOfOrderScannerNextException(
"Expected nextCallSeq: " + rsh.getNextCallSeq() + " But the nextCallSeq got from client: "
+ request.getNextCallSeq() + "; request=" + TextFormat.shortDebugString(request));
}
}
}
private void addScannerLeaseBack(LeaseManager.Lease lease) {
try {
server.getLeaseManager().addLease(lease);
} catch (LeaseStillHeldException e) {
// should not happen as the scanner id is unique.
throw new AssertionError(e);
}
}
// visible for testing only
long getTimeLimit(RpcCall rpcCall, HBaseRpcController controller,
boolean allowHeartbeatMessages) {
// Set the time limit to be half of the more restrictive timeout value (one of the
// timeout values must be positive). In the event that both values are positive, the
// more restrictive of the two is used to calculate the limit.
if (allowHeartbeatMessages) {
long now = EnvironmentEdgeManager.currentTime();
long remainingTimeout = getRemainingRpcTimeout(rpcCall, controller, now);
if (scannerLeaseTimeoutPeriod > 0 || remainingTimeout > 0) {
long timeLimitDelta;
if (scannerLeaseTimeoutPeriod > 0 && remainingTimeout > 0) {
timeLimitDelta = Math.min(scannerLeaseTimeoutPeriod, remainingTimeout);
} else {
timeLimitDelta =
scannerLeaseTimeoutPeriod > 0 ? scannerLeaseTimeoutPeriod : remainingTimeout;
}
// Use half of whichever timeout value was more restrictive... But don't allow
// the time limit to be less than the allowable minimum (could cause an
// immediate timeout before scanning any data).
timeLimitDelta = Math.max(timeLimitDelta / 2, minimumScanTimeLimitDelta);
return now + timeLimitDelta;
}
}
// Default value of timeLimit is negative to indicate no timeLimit should be
// enforced.
return -1L;
}
private long getRemainingRpcTimeout(RpcCall call, HBaseRpcController controller, long now) {
long timeout;
if (controller != null && controller.getCallTimeout() > 0) {
timeout = controller.getCallTimeout();
} else if (rpcTimeout > 0) {
timeout = rpcTimeout;
} else {
return -1;
}
if (call != null) {
timeout -= (now - call.getReceiveTime());
}
// getTimeLimit ignores values <= 0, but timeout may now be negative if queue time was high.
// return minimum value here in that case so we count this in calculating the final delta.
return Math.max(minimumScanTimeLimitDelta, timeout);
}
private void checkLimitOfRows(int numOfCompleteRows, int limitOfRows, boolean moreRows,
ScannerContext scannerContext, ScanResponse.Builder builder) {
if (numOfCompleteRows >= limitOfRows) {
if (LOG.isTraceEnabled()) {
LOG.trace("Done scanning, limit of rows reached, moreRows: " + moreRows
+ " scannerContext: " + scannerContext);
}
builder.setMoreResults(false);
}
}
// return whether we have more results in region.
private void scan(HBaseRpcController controller, ScanRequest request, RegionScannerHolder rsh,
long maxQuotaResultSize, int maxResults, int limitOfRows, List results,
ScanResponse.Builder builder, RpcCall rpcCall) throws IOException {
HRegion region = rsh.r;
RegionScanner scanner = rsh.s;
long maxResultSize;
if (scanner.getMaxResultSize() > 0) {
maxResultSize = Math.min(scanner.getMaxResultSize(), maxQuotaResultSize);
} else {
maxResultSize = maxQuotaResultSize;
}
// This is cells inside a row. Default size is 10 so if many versions or many cfs,
// then we'll resize. Resizings show in profiler. Set it higher than 10. For now
// arbitrary 32. TODO: keep record of general size of results being returned.
ArrayList values = new ArrayList<>(32);
region.startRegionOperation(Operation.SCAN);
long before = EnvironmentEdgeManager.currentTime();
// Used to check if we've matched the row limit set on the Scan
int numOfCompleteRows = 0;
// Count of times we call nextRaw; can be > numOfCompleteRows.
int numOfNextRawCalls = 0;
try {
int numOfResults = 0;
synchronized (scanner) {
boolean stale = (region.getRegionInfo().getReplicaId() != 0);
boolean clientHandlesPartials =
request.hasClientHandlesPartials() && request.getClientHandlesPartials();
boolean clientHandlesHeartbeats =
request.hasClientHandlesHeartbeats() && request.getClientHandlesHeartbeats();
// On the server side we must ensure that the correct ordering of partial results is
// returned to the client to allow them to properly reconstruct the partial results.
// If the coprocessor host is adding to the result list, we cannot guarantee the
// correct ordering of partial results and so we prevent partial results from being
// formed.
boolean serverGuaranteesOrderOfPartials = results.isEmpty();
boolean allowPartialResults = clientHandlesPartials && serverGuaranteesOrderOfPartials;
boolean moreRows = false;
// Heartbeat messages occur when the processing of the ScanRequest is exceeds a
// certain time threshold on the server. When the time threshold is exceeded, the
// server stops the scan and sends back whatever Results it has accumulated within
// that time period (may be empty). Since heartbeat messages have the potential to
// create partial Results (in the event that the timeout occurs in the middle of a
// row), we must only generate heartbeat messages when the client can handle both
// heartbeats AND partials
boolean allowHeartbeatMessages = clientHandlesHeartbeats && allowPartialResults;
long timeLimit = getTimeLimit(rpcCall, controller, allowHeartbeatMessages);
final LimitScope sizeScope =
allowPartialResults ? LimitScope.BETWEEN_CELLS : LimitScope.BETWEEN_ROWS;
final LimitScope timeScope =
allowHeartbeatMessages ? LimitScope.BETWEEN_CELLS : LimitScope.BETWEEN_ROWS;
boolean trackMetrics = request.hasTrackScanMetrics() && request.getTrackScanMetrics();
// Configure with limits for this RPC. Set keep progress true since size progress
// towards size limit should be kept between calls to nextRaw
ScannerContext.Builder contextBuilder = ScannerContext.newBuilder(true);
// maxResultSize - either we can reach this much size for all cells(being read) data or sum
// of heap size occupied by cells(being read). Cell data means its key and value parts.
// maxQuotaResultSize - max results just from server side configuration and quotas, without
// user's specified max. We use this for evaluating limits based on blocks (not cells).
// We may have accumulated some results in coprocessor preScannerNext call. Subtract any
// cell or block size from maximum here so we adhere to total limits of request.
// Note: we track block size in StoreScanner. If the CP hook got cells from hbase, it will
// have accumulated block bytes. If not, this will be 0 for block size.
long maxCellSize = maxResultSize;
long maxBlockSize = maxQuotaResultSize;
if (rpcCall != null) {
maxBlockSize -= rpcCall.getBlockBytesScanned();
maxCellSize -= rpcCall.getResponseCellSize();
}
contextBuilder.setSizeLimit(sizeScope, maxCellSize, maxCellSize, maxBlockSize);
contextBuilder.setBatchLimit(scanner.getBatch());
contextBuilder.setTimeLimit(timeScope, timeLimit);
contextBuilder.setTrackMetrics(trackMetrics);
ScannerContext scannerContext = contextBuilder.build();
boolean limitReached = false;
while (numOfResults < maxResults) {
// Reset the batch progress to 0 before every call to RegionScanner#nextRaw. The
// batch limit is a limit on the number of cells per Result. Thus, if progress is
// being tracked (i.e. scannerContext.keepProgress() is true) then we need to
// reset the batch progress between nextRaw invocations since we don't want the
// batch progress from previous calls to affect future calls
scannerContext.setBatchProgress(0);
assert values.isEmpty();
// Collect values to be returned here
moreRows = scanner.nextRaw(values, scannerContext);
if (rpcCall == null) {
// When there is no RpcCallContext,copy EC to heap, then the scanner would close,
// This can be an EXPENSIVE call. It may make an extra copy from offheap to onheap
// buffers.See more details in HBASE-26036.
CellUtil.cloneIfNecessary(values);
}
numOfNextRawCalls++;
if (!values.isEmpty()) {
if (limitOfRows > 0) {
// First we need to check if the last result is partial and we have a row change. If
// so then we need to increase the numOfCompleteRows.
if (results.isEmpty()) {
if (
rsh.rowOfLastPartialResult != null
&& !CellUtil.matchingRows(values.get(0), rsh.rowOfLastPartialResult)
) {
numOfCompleteRows++;
checkLimitOfRows(numOfCompleteRows, limitOfRows, moreRows, scannerContext,
builder);
}
} else {
Result lastResult = results.get(results.size() - 1);
if (
lastResult.mayHaveMoreCellsInRow()
&& !CellUtil.matchingRows(values.get(0), lastResult.getRow())
) {
numOfCompleteRows++;
checkLimitOfRows(numOfCompleteRows, limitOfRows, moreRows, scannerContext,
builder);
}
}
if (builder.hasMoreResults() && !builder.getMoreResults()) {
break;
}
}
boolean mayHaveMoreCellsInRow = scannerContext.mayHaveMoreCellsInRow();
Result r = Result.create(values, null, stale, mayHaveMoreCellsInRow);
results.add(r);
numOfResults++;
if (!mayHaveMoreCellsInRow && limitOfRows > 0) {
numOfCompleteRows++;
checkLimitOfRows(numOfCompleteRows, limitOfRows, moreRows, scannerContext, builder);
if (builder.hasMoreResults() && !builder.getMoreResults()) {
break;
}
}
} else if (!moreRows && !results.isEmpty()) {
// No more cells for the scan here, we need to ensure that the mayHaveMoreCellsInRow of
// last result is false. Otherwise it's possible that: the first nextRaw returned
// because BATCH_LIMIT_REACHED (BTW it happen to exhaust all cells of the scan),so the
// last result's mayHaveMoreCellsInRow will be true. while the following nextRaw will
// return with moreRows=false, which means moreResultsInRegion would be false, it will
// be a contradictory state (HBASE-21206).
int lastIdx = results.size() - 1;
Result r = results.get(lastIdx);
if (r.mayHaveMoreCellsInRow()) {
results.set(lastIdx, Result.create(r.rawCells(), r.getExists(), r.isStale(), false));
}
}
boolean sizeLimitReached = scannerContext.checkSizeLimit(LimitScope.BETWEEN_ROWS);
boolean timeLimitReached = scannerContext.checkTimeLimit(LimitScope.BETWEEN_ROWS);
boolean resultsLimitReached = numOfResults >= maxResults;
limitReached = sizeLimitReached || timeLimitReached || resultsLimitReached;
if (limitReached || !moreRows) {
// With block size limit, we may exceed size limit without collecting any results.
// In this case we want to send heartbeat and/or cursor. We don't want to send heartbeat
// or cursor if results were collected, for example for cell size or heap size limits.
boolean sizeLimitReachedWithoutResults = sizeLimitReached && results.isEmpty();
// We only want to mark a ScanResponse as a heartbeat message in the event that
// there are more values to be read server side. If there aren't more values,
// marking it as a heartbeat is wasteful because the client will need to issue
// another ScanRequest only to realize that they already have all the values
if (moreRows && (timeLimitReached || sizeLimitReachedWithoutResults)) {
// Heartbeat messages occur when the time limit has been reached, or size limit has
// been reached before collecting any results. This can happen for heavily filtered
// scans which scan over too many blocks.
builder.setHeartbeatMessage(true);
if (rsh.needCursor) {
Cell cursorCell = scannerContext.getLastPeekedCell();
if (cursorCell != null) {
builder.setCursor(ProtobufUtil.toCursor(cursorCell));
}
}
}
break;
}
values.clear();
}
if (rpcCall != null) {
rpcCall.incrementResponseCellSize(scannerContext.getHeapSizeProgress());
}
builder.setMoreResultsInRegion(moreRows);
// Check to see if the client requested that we track metrics server side. If the
// client requested metrics, retrieve the metrics from the scanner context.
if (trackMetrics) {
// rather than increment yet another counter in StoreScanner, just set the value here
// from block size progress before writing into the response
scannerContext.getMetrics().countOfBlockBytesScanned
.set(scannerContext.getBlockSizeProgress());
Map metrics = scannerContext.getMetrics().getMetricsMap();
ScanMetrics.Builder metricBuilder = ScanMetrics.newBuilder();
NameInt64Pair.Builder pairBuilder = NameInt64Pair.newBuilder();
for (Entry entry : metrics.entrySet()) {
pairBuilder.setName(entry.getKey());
pairBuilder.setValue(entry.getValue());
metricBuilder.addMetrics(pairBuilder.build());
}
builder.setScanMetrics(metricBuilder.build());
}
}
} finally {
region.closeRegionOperation();
// Update serverside metrics, even on error.
long end = EnvironmentEdgeManager.currentTime();
long responseCellSize = 0;
long blockBytesScanned = 0;
if (rpcCall != null) {
responseCellSize = rpcCall.getResponseCellSize();
blockBytesScanned = rpcCall.getBlockBytesScanned();
}
region.getMetrics().updateScanTime(end - before);
final MetricsRegionServer metricsRegionServer = server.getMetrics();
if (metricsRegionServer != null) {
metricsRegionServer.updateScan(region, end - before, responseCellSize, blockBytesScanned);
metricsRegionServer.updateReadQueryMeter(region, numOfNextRawCalls);
}
}
// coprocessor postNext hook
if (region.getCoprocessorHost() != null) {
region.getCoprocessorHost().postScannerNext(scanner, results, maxResults, true);
}
}
/**
* Scan data in a table.
* @param controller the RPC controller
* @param request the scan request
*/
@Override
public ScanResponse scan(final RpcController controller, final ScanRequest request)
throws ServiceException {
if (controller != null && !(controller instanceof HBaseRpcController)) {
throw new UnsupportedOperationException(
"We only do " + "HBaseRpcControllers! FIX IF A PROBLEM: " + controller);
}
if (!request.hasScannerId() && !request.hasScan()) {
throw new ServiceException(
new DoNotRetryIOException("Missing required input: scannerId or scan"));
}
try {
checkOpen();
} catch (IOException e) {
if (request.hasScannerId()) {
String scannerName = toScannerName(request.getScannerId());
if (LOG.isDebugEnabled()) {
LOG.debug(
"Server shutting down and client tried to access missing scanner " + scannerName);
}
final LeaseManager leaseManager = server.getLeaseManager();
if (leaseManager != null) {
try {
leaseManager.cancelLease(scannerName);
} catch (LeaseException le) {
// No problem, ignore
if (LOG.isTraceEnabled()) {
LOG.trace("Un-able to cancel lease of scanner. It could already be closed.");
}
}
}
}
throw new ServiceException(e);
}
requestCount.increment();
rpcScanRequestCount.increment();
RegionScannerHolder rsh;
ScanResponse.Builder builder = ScanResponse.newBuilder();
String scannerName;
try {
if (request.hasScannerId()) {
// The downstream projects such as AsyncHBase in OpenTSDB need this value. See HBASE-18000
// for more details.
long scannerId = request.getScannerId();
builder.setScannerId(scannerId);
scannerName = toScannerName(scannerId);
rsh = getRegionScanner(request);
} else {
Pair scannerNameAndRSH = newRegionScanner(request, builder);
scannerName = scannerNameAndRSH.getFirst();
rsh = scannerNameAndRSH.getSecond();
}
} catch (IOException e) {
if (e == SCANNER_ALREADY_CLOSED) {
// Now we will close scanner automatically if there are no more results for this region but
// the old client will still send a close request to us. Just ignore it and return.
return builder.build();
}
throw new ServiceException(e);
}
if (rsh.fullRegionScan) {
rpcFullScanRequestCount.increment();
}
HRegion region = rsh.r;
LeaseManager.Lease lease;
try {
// Remove lease while its being processed in server; protects against case
// where processing of request takes > lease expiration time. or null if none found.
lease = server.getLeaseManager().removeLease(scannerName);
} catch (LeaseException e) {
throw new ServiceException(e);
}
if (request.hasRenew() && request.getRenew()) {
// add back and return
addScannerLeaseBack(lease);
try {
checkScanNextCallSeq(request, rsh);
} catch (OutOfOrderScannerNextException e) {
throw new ServiceException(e);
}
return builder.build();
}
OperationQuota quota;
try {
quota = getRpcQuotaManager().checkQuota(region, OperationQuota.OperationType.SCAN);
} catch (IOException e) {
addScannerLeaseBack(lease);
throw new ServiceException(e);
}
try {
checkScanNextCallSeq(request, rsh);
} catch (OutOfOrderScannerNextException e) {
addScannerLeaseBack(lease);
throw new ServiceException(e);
}
// Now we have increased the next call sequence. If we give client an error, the retry will
// never success. So we'd better close the scanner and return a DoNotRetryIOException to client
// and then client will try to open a new scanner.
boolean closeScanner = request.hasCloseScanner() ? request.getCloseScanner() : false;
int rows; // this is scan.getCaching
if (request.hasNumberOfRows()) {
rows = request.getNumberOfRows();
} else {
rows = closeScanner ? 0 : 1;
}
RpcCall rpcCall = RpcServer.getCurrentCall().orElse(null);
// now let's do the real scan.
long maxQuotaResultSize = Math.min(maxScannerResultSize, quota.getReadAvailable());
RegionScanner scanner = rsh.s;
// this is the limit of rows for this scan, if we the number of rows reach this value, we will
// close the scanner.
int limitOfRows;
if (request.hasLimitOfRows()) {
limitOfRows = request.getLimitOfRows();
} else {
limitOfRows = -1;
}
boolean scannerClosed = false;
try {
List results = new ArrayList<>(Math.min(rows, 512));
if (rows > 0) {
boolean done = false;
// Call coprocessor. Get region info from scanner.
if (region.getCoprocessorHost() != null) {
Boolean bypass = region.getCoprocessorHost().preScannerNext(scanner, results, rows);
if (!results.isEmpty()) {
for (Result r : results) {
// add cell size from CP results so we can track response size and update limits
// when calling scan below if !done. We'll also have tracked block size if the CP
// got results from hbase, since StoreScanner tracks that for all calls automatically.
addSize(rpcCall, r);
}
}
if (bypass != null && bypass.booleanValue()) {
done = true;
}
}
if (!done) {
scan((HBaseRpcController) controller, request, rsh, maxQuotaResultSize, rows, limitOfRows,
results, builder, rpcCall);
} else {
builder.setMoreResultsInRegion(!results.isEmpty());
}
} else {
// This is a open scanner call with numberOfRow = 0, so set more results in region to true.
builder.setMoreResultsInRegion(true);
}
quota.addScanResult(results);
addResults(builder, results, (HBaseRpcController) controller,
RegionReplicaUtil.isDefaultReplica(region.getRegionInfo()),
isClientCellBlockSupport(rpcCall));
if (scanner.isFilterDone() && results.isEmpty()) {
// If the scanner's filter - if any - is done with the scan
// only set moreResults to false if the results is empty. This is used to keep compatible
// with the old scan implementation where we just ignore the returned results if moreResults
// is false. Can remove the isEmpty check after we get rid of the old implementation.
builder.setMoreResults(false);
}
// Later we may close the scanner depending on this flag so here we need to make sure that we
// have already set this flag.
assert builder.hasMoreResultsInRegion();
// we only set moreResults to false in the above code, so set it to true if we haven't set it
// yet.
if (!builder.hasMoreResults()) {
builder.setMoreResults(true);
}
if (builder.getMoreResults() && builder.getMoreResultsInRegion() && !results.isEmpty()) {
// Record the last cell of the last result if it is a partial result
// We need this to calculate the complete rows we have returned to client as the
// mayHaveMoreCellsInRow is true does not mean that there will be extra cells for the
// current row. We may filter out all the remaining cells for the current row and just
// return the cells of the nextRow when calling RegionScanner.nextRaw. So here we need to
// check for row change.
Result lastResult = results.get(results.size() - 1);
if (lastResult.mayHaveMoreCellsInRow()) {
rsh.rowOfLastPartialResult = lastResult.getRow();
} else {
rsh.rowOfLastPartialResult = null;
}
}
if (!builder.getMoreResults() || !builder.getMoreResultsInRegion() || closeScanner) {
scannerClosed = true;
closeScanner(region, scanner, scannerName, rpcCall);
}
// There's no point returning to a timed out client. Throwing ensures scanner is closed
if (rpcCall != null && EnvironmentEdgeManager.currentTime() > rpcCall.getDeadline()) {
throw new TimeoutIOException("Client deadline exceeded, cannot return results");
}
return builder.build();
} catch (IOException e) {
try {
// scanner is closed here
scannerClosed = true;
// The scanner state might be left in a dirty state, so we will tell the Client to
// fail this RPC and close the scanner while opening up another one from the start of
// row that the client has last seen.
closeScanner(region, scanner, scannerName, rpcCall);
// If it is a DoNotRetryIOException already, throw as it is. Unfortunately, DNRIOE is
// used in two different semantics.
// (1) The first is to close the client scanner and bubble up the exception all the way
// to the application. This is preferred when the exception is really un-recoverable
// (like CorruptHFileException, etc). Plain DoNotRetryIOException also falls into this
// bucket usually.
// (2) Second semantics is to close the current region scanner only, but continue the
// client scanner by overriding the exception. This is usually UnknownScannerException,
// OutOfOrderScannerNextException, etc where the region scanner has to be closed, but the
// application-level ClientScanner has to continue without bubbling up the exception to
// the client. See ClientScanner code to see how it deals with these special exceptions.
if (e instanceof DoNotRetryIOException) {
throw e;
}
// If it is a FileNotFoundException, wrap as a
// DoNotRetryIOException. This can avoid the retry in ClientScanner.
if (e instanceof FileNotFoundException) {
throw new DoNotRetryIOException(e);
}
// We closed the scanner already. Instead of throwing the IOException, and client
// retrying with the same scannerId only to get USE on the next RPC, we directly throw
// a special exception to save an RPC.
if (VersionInfoUtil.hasMinimumVersion(rpcCall.getClientVersionInfo(), 1, 4)) {
// 1.4.0+ clients know how to handle
throw new ScannerResetException("Scanner is closed on the server-side", e);
} else {
// older clients do not know about SRE. Just throw USE, which they will handle
throw new UnknownScannerException("Throwing UnknownScannerException to reset the client"
+ " scanner state for clients older than 1.3.", e);
}
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
} finally {
if (!scannerClosed) {
// Adding resets expiration time on lease.
// the closeCallBack will be set in closeScanner so here we only care about shippedCallback
if (rpcCall != null) {
rpcCall.setCallBack(rsh.shippedCallback);
} else {
// If context is null,here we call rsh.shippedCallback directly to reuse the logic in
// rsh.shippedCallback to release the internal resources in rsh,and lease is also added
// back to regionserver's LeaseManager in rsh.shippedCallback.
runShippedCallback(rsh);
}
}
quota.close();
}
}
private void runShippedCallback(RegionScannerHolder rsh) throws ServiceException {
assert rsh.shippedCallback != null;
try {
rsh.shippedCallback.run();
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
}
private void closeScanner(HRegion region, RegionScanner scanner, String scannerName,
RpcCallContext context) throws IOException {
if (region.getCoprocessorHost() != null) {
if (region.getCoprocessorHost().preScannerClose(scanner)) {
// bypass the actual close.
return;
}
}
RegionScannerHolder rsh = scanners.remove(scannerName);
if (rsh != null) {
if (context != null) {
context.setCallBack(rsh.closeCallBack);
} else {
rsh.s.close();
}
if (region.getCoprocessorHost() != null) {
region.getCoprocessorHost().postScannerClose(scanner);
}
closedScanners.put(scannerName, scannerName);
}
}
@Override
public CoprocessorServiceResponse execRegionServerService(RpcController controller,
CoprocessorServiceRequest request) throws ServiceException {
rpcPreCheck("execRegionServerService");
return server.execRegionServerService(controller, request);
}
@Override
public GetSpaceQuotaSnapshotsResponse getSpaceQuotaSnapshots(RpcController controller,
GetSpaceQuotaSnapshotsRequest request) throws ServiceException {
try {
final RegionServerSpaceQuotaManager manager = server.getRegionServerSpaceQuotaManager();
final GetSpaceQuotaSnapshotsResponse.Builder builder =
GetSpaceQuotaSnapshotsResponse.newBuilder();
if (manager != null) {
final Map snapshots = manager.copyQuotaSnapshots();
for (Entry snapshot : snapshots.entrySet()) {
builder.addSnapshots(TableQuotaSnapshot.newBuilder()
.setTableName(ProtobufUtil.toProtoTableName(snapshot.getKey()))
.setSnapshot(SpaceQuotaSnapshot.toProtoSnapshot(snapshot.getValue())).build());
}
}
return builder.build();
} catch (Exception e) {
throw new ServiceException(e);
}
}
@Override
public ClearRegionBlockCacheResponse clearRegionBlockCache(RpcController controller,
ClearRegionBlockCacheRequest request) throws ServiceException {
rpcPreCheck("clearRegionBlockCache");
ClearRegionBlockCacheResponse.Builder builder = ClearRegionBlockCacheResponse.newBuilder();
CacheEvictionStatsBuilder stats = CacheEvictionStats.builder();
List regions = getRegions(request.getRegionList(), stats);
for (HRegion region : regions) {
try {
stats = stats.append(this.server.clearRegionBlockCache(region));
} catch (Exception e) {
stats.addException(region.getRegionInfo().getRegionName(), e);
}
}
stats.withMaxCacheSize(server.getBlockCache().map(BlockCache::getMaxSize).orElse(0L));
return builder.setStats(ProtobufUtil.toCacheEvictionStats(stats.build())).build();
}
private void executeOpenRegionProcedures(OpenRegionRequest request,
Map tdCache) {
long masterSystemTime = request.hasMasterSystemTime() ? request.getMasterSystemTime() : -1;
for (RegionOpenInfo regionOpenInfo : request.getOpenInfoList()) {
RegionInfo regionInfo = ProtobufUtil.toRegionInfo(regionOpenInfo.getRegion());
TableName tableName = regionInfo.getTable();
TableDescriptor tableDesc = tdCache.get(tableName);
if (tableDesc == null) {
try {
tableDesc = server.getTableDescriptors().get(regionInfo.getTable());
} catch (IOException e) {
// Here we do not fail the whole method since we also need deal with other
// procedures, and we can not ignore this one, so we still schedule a
// AssignRegionHandler and it will report back to master if we still can not get the
// TableDescriptor.
LOG.warn("Failed to get TableDescriptor of {}, will try again in the handler",
regionInfo.getTable(), e);
}
if (tableDesc != null) {
tdCache.put(tableName, tableDesc);
}
}
if (regionOpenInfo.getFavoredNodesCount() > 0) {
server.updateRegionFavoredNodesMapping(regionInfo.getEncodedName(),
regionOpenInfo.getFavoredNodesList());
}
long procId = regionOpenInfo.getOpenProcId();
if (server.submitRegionProcedure(procId)) {
server.getExecutorService().submit(
AssignRegionHandler.create(server, regionInfo, procId, tableDesc, masterSystemTime));
}
}
}
private void executeCloseRegionProcedures(CloseRegionRequest request) {
String encodedName;
try {
encodedName = ProtobufUtil.getRegionEncodedName(request.getRegion());
} catch (DoNotRetryIOException e) {
throw new UncheckedIOException("Should not happen", e);
}
ServerName destination = request.hasDestinationServer()
? ProtobufUtil.toServerName(request.getDestinationServer())
: null;
long procId = request.getCloseProcId();
boolean evictCache = request.getEvictCache();
if (server.submitRegionProcedure(procId)) {
server.getExecutorService().submit(
UnassignRegionHandler.create(server, encodedName, procId, false, destination, evictCache));
}
}
private void executeProcedures(RemoteProcedureRequest request) {
RSProcedureCallable callable;
try {
callable = Class.forName(request.getProcClass()).asSubclass(RSProcedureCallable.class)
.getDeclaredConstructor().newInstance();
} catch (Exception e) {
LOG.warn("Failed to instantiating remote procedure {}, pid={}", request.getProcClass(),
request.getProcId(), e);
server.remoteProcedureComplete(request.getProcId(), e);
return;
}
callable.init(request.getProcData().toByteArray(), server);
LOG.debug("Executing remote procedure {}, pid={}", callable.getClass(), request.getProcId());
server.executeProcedure(request.getProcId(), callable);
}
@Override
@QosPriority(priority = HConstants.ADMIN_QOS)
public ExecuteProceduresResponse executeProcedures(RpcController controller,
ExecuteProceduresRequest request) throws ServiceException {
try {
checkOpen();
throwOnWrongStartCode(request);
server.getRegionServerCoprocessorHost().preExecuteProcedures();
if (request.getOpenRegionCount() > 0) {
// Avoid reading from the TableDescritor every time(usually it will read from the file
// system)
Map tdCache = new HashMap<>();
request.getOpenRegionList().forEach(req -> executeOpenRegionProcedures(req, tdCache));
}
if (request.getCloseRegionCount() > 0) {
request.getCloseRegionList().forEach(this::executeCloseRegionProcedures);
}
if (request.getProcCount() > 0) {
request.getProcList().forEach(this::executeProcedures);
}
server.getRegionServerCoprocessorHost().postExecuteProcedures();
return ExecuteProceduresResponse.getDefaultInstance();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public GetAllBootstrapNodesResponse getAllBootstrapNodes(RpcController controller,
GetAllBootstrapNodesRequest request) throws ServiceException {
GetAllBootstrapNodesResponse.Builder builder = GetAllBootstrapNodesResponse.newBuilder();
server.getBootstrapNodes()
.forEachRemaining(server -> builder.addNode(ProtobufUtil.toServerName(server)));
return builder.build();
}
private void setReloadableGuardrails(Configuration conf) {
rowSizeWarnThreshold =
conf.getInt(HConstants.BATCH_ROWS_THRESHOLD_NAME, HConstants.BATCH_ROWS_THRESHOLD_DEFAULT);
rejectRowsWithSizeOverThreshold =
conf.getBoolean(REJECT_BATCH_ROWS_OVER_THRESHOLD, DEFAULT_REJECT_BATCH_ROWS_OVER_THRESHOLD);
maxScannerResultSize = conf.getLong(HConstants.HBASE_SERVER_SCANNER_MAX_RESULT_SIZE_KEY,
HConstants.DEFAULT_HBASE_SERVER_SCANNER_MAX_RESULT_SIZE);
}
@Override
public void onConfigurationChange(Configuration conf) {
super.onConfigurationChange(conf);
setReloadableGuardrails(conf);
}
}
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