org.elasticsearch.indices.recovery.RemoteRecoveryTargetHandler Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.indices.recovery;
import org.apache.lucene.store.RateLimiter;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.index.seqno.GlobalCheckpointTracker;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.index.store.Store;
import org.elasticsearch.index.store.StoreFileMetaData;
import org.elasticsearch.index.translog.Translog;
import org.elasticsearch.transport.EmptyTransportResponseHandler;
import org.elasticsearch.transport.TransportFuture;
import org.elasticsearch.transport.TransportRequestOptions;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.atomic.AtomicLong;
import java.util.function.Consumer;
public class RemoteRecoveryTargetHandler implements RecoveryTargetHandler {
private final TransportService transportService;
private final long recoveryId;
private final ShardId shardId;
private final DiscoveryNode targetNode;
private final RecoverySettings recoverySettings;
private final TransportRequestOptions translogOpsRequestOptions;
private final TransportRequestOptions fileChunkRequestOptions;
private final AtomicLong bytesSinceLastPause = new AtomicLong();
private final Consumer onSourceThrottle;
public RemoteRecoveryTargetHandler(long recoveryId, ShardId shardId, TransportService transportService,
DiscoveryNode targetNode, RecoverySettings recoverySettings, Consumer onSourceThrottle) {
this.transportService = transportService;
this.recoveryId = recoveryId;
this.shardId = shardId;
this.targetNode = targetNode;
this.recoverySettings = recoverySettings;
this.onSourceThrottle = onSourceThrottle;
this.translogOpsRequestOptions = TransportRequestOptions.builder()
.withCompress(true)
.withType(TransportRequestOptions.Type.RECOVERY)
.withTimeout(recoverySettings.internalActionLongTimeout())
.build();
this.fileChunkRequestOptions = TransportRequestOptions.builder()
.withCompress(false) // lucene files are already compressed and therefore compressing this won't really help much so
// we are saving the cpu for other things
.withType(TransportRequestOptions.Type.RECOVERY)
.withTimeout(recoverySettings.internalActionTimeout())
.build();
}
@Override
public void prepareForTranslogOperations(boolean createNewTranslog, int totalTranslogOps) throws IOException {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.PREPARE_TRANSLOG,
new RecoveryPrepareForTranslogOperationsRequest(recoveryId, shardId, totalTranslogOps, createNewTranslog),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void finalizeRecovery(final long globalCheckpoint) {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.FINALIZE,
new RecoveryFinalizeRecoveryRequest(recoveryId, shardId, globalCheckpoint),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionLongTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void ensureClusterStateVersion(long clusterStateVersion) {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.WAIT_CLUSTERSTATE,
new RecoveryWaitForClusterStateRequest(recoveryId, shardId, clusterStateVersion),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionLongTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void handoffPrimaryContext(final GlobalCheckpointTracker.PrimaryContext primaryContext) {
transportService.submitRequest(
targetNode,
PeerRecoveryTargetService.Actions.HANDOFF_PRIMARY_CONTEXT,
new RecoveryHandoffPrimaryContextRequest(recoveryId, shardId, primaryContext),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public long indexTranslogOperations(List operations, int totalTranslogOps) {
final RecoveryTranslogOperationsRequest translogOperationsRequest =
new RecoveryTranslogOperationsRequest(recoveryId, shardId, operations, totalTranslogOps);
final TransportFuture future = transportService.submitRequest(
targetNode,
PeerRecoveryTargetService.Actions.TRANSLOG_OPS,
translogOperationsRequest,
translogOpsRequestOptions,
RecoveryTranslogOperationsResponse.HANDLER);
return future.txGet().localCheckpoint;
}
@Override
public void receiveFileInfo(List phase1FileNames, List phase1FileSizes, List phase1ExistingFileNames,
List phase1ExistingFileSizes, int totalTranslogOps) {
RecoveryFilesInfoRequest recoveryInfoFilesRequest = new RecoveryFilesInfoRequest(recoveryId, shardId,
phase1FileNames, phase1FileSizes, phase1ExistingFileNames, phase1ExistingFileSizes, totalTranslogOps);
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.FILES_INFO, recoveryInfoFilesRequest,
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void cleanFiles(int totalTranslogOps, Store.MetadataSnapshot sourceMetaData) throws IOException {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.CLEAN_FILES,
new RecoveryCleanFilesRequest(recoveryId, shardId, sourceMetaData, totalTranslogOps),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void writeFileChunk(StoreFileMetaData fileMetaData, long position, BytesReference content, boolean
lastChunk, int totalTranslogOps) throws IOException {
// Pause using the rate limiter, if desired, to throttle the recovery
final long throttleTimeInNanos;
// always fetch the ratelimiter - it might be updated in real-time on the recovery settings
final RateLimiter rl = recoverySettings.rateLimiter();
if (rl != null) {
long bytes = bytesSinceLastPause.addAndGet(content.length());
if (bytes > rl.getMinPauseCheckBytes()) {
// Time to pause
bytesSinceLastPause.addAndGet(-bytes);
try {
throttleTimeInNanos = rl.pause(bytes);
onSourceThrottle.accept(throttleTimeInNanos);
} catch (IOException e) {
throw new ElasticsearchException("failed to pause recovery", e);
}
} else {
throttleTimeInNanos = 0;
}
} else {
throttleTimeInNanos = 0;
}
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.FILE_CHUNK,
new RecoveryFileChunkRequest(recoveryId, shardId, fileMetaData, position, content, lastChunk,
totalTranslogOps,
/* we send estimateTotalOperations with every request since we collect stats on the target and that way we can
* see how many translog ops we accumulate while copying files across the network. A future optimization
* would be in to restart file copy again (new deltas) if we have too many translog ops are piling up.
*/
throttleTimeInNanos), fileChunkRequestOptions, EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
}