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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* 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.cassandra.service;
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.nio.ByteBuffer;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeoutException;
import javax.management.NotificationEmitter;
import javax.management.openmbean.TabularData;
public interface StorageServiceMBean extends NotificationEmitter
{
/**
* Retrieve the list of live nodes in the cluster, where "liveness" is
* determined by the failure detector of the node being queried.
*
* @return set of IP addresses, as Strings
*/
public List getLiveNodes();
/**
* Retrieve the list of unreachable nodes in the cluster, as determined
* by this node's failure detector.
*
* @return set of IP addresses, as Strings
*/
public List getUnreachableNodes();
/**
* Retrieve the list of nodes currently bootstrapping into the ring.
*
* @return set of IP addresses, as Strings
*/
public List getJoiningNodes();
/**
* Retrieve the list of nodes currently leaving the ring.
*
* @return set of IP addresses, as Strings
*/
public List getLeavingNodes();
/**
* Retrieve the list of nodes currently moving in the ring.
*
* @return set of IP addresses, as Strings
*/
public List getMovingNodes();
/**
* Fetch string representations of the tokens for this node.
*
* @return a collection of tokens formatted as strings
*/
public List getTokens();
/**
* Fetch string representations of the tokens for a specified node.
*
* @param endpoint string representation of an node
* @return a collection of tokens formatted as strings
*/
public List getTokens(String endpoint) throws UnknownHostException;
/**
* Fetch a string representation of the Cassandra version.
* @return A string representation of the Cassandra version.
*/
public String getReleaseVersion();
/**
* Fetch a string representation of the current Schema version.
* @return A string representation of the Schema version.
*/
public String getSchemaVersion();
/**
* Get the list of all data file locations from conf
* @return String array of all locations
*/
public String[] getAllDataFileLocations();
/**
* Get location of the commit log
* @return a string path
*/
public String getCommitLogLocation();
/**
* Get location of the saved caches dir
* @return a string path
*/
public String getSavedCachesLocation();
/**
* Retrieve a map of range to end points that describe the ring topology
* of a Cassandra cluster.
*
* @return mapping of ranges to end points
*/
public Map, List> getRangeToEndpointMap(String keyspace);
/**
* Retrieve a map of range to rpc addresses that describe the ring topology
* of a Cassandra cluster.
*
* @return mapping of ranges to rpc addresses
*/
public Map, List> getRangeToRpcaddressMap(String keyspace);
/**
* The same as {@code describeRing(String)} but converts TokenRange to the String for JMX compatibility
*
* @param keyspace The keyspace to fetch information about
*
* @return a List of TokenRange(s) converted to String for the given keyspace
*/
public List describeRingJMX(String keyspace) throws IOException;
/**
* Retrieve a map of pending ranges to endpoints that describe the ring topology
* @param keyspace the keyspace to get the pending range map for.
* @return a map of pending ranges to endpoints
*/
public Map, List> getPendingRangeToEndpointMap(String keyspace);
/**
* Retrieve a map of tokens to endpoints, including the bootstrapping
* ones.
*
* @return a map of tokens to endpoints in ascending order
*/
public Map getTokenToEndpointMap();
/** Retrieve this hosts unique ID */
public String getLocalHostId();
/** {@link StorageServiceMBean#getEndpointToHostId} */
@Deprecated
public Map getHostIdMap();
/** Retrieve the mapping of endpoint to host ID */
public Map getEndpointToHostId();
/** Retrieve the mapping of host ID to endpoint */
public Map getHostIdToEndpoint();
/** Human-readable load value */
public String getLoadString();
/** Human-readable load value. Keys are IP addresses. */
public Map getLoadMap();
/**
* Return the generation value for this node.
*
* @return generation number
*/
public int getCurrentGenerationNumber();
/**
* This method returns the N endpoints that are responsible for storing the
* specified key i.e for replication.
*
* @param keyspaceName keyspace name
* @param cf Column family name
* @param key - key for which we need to find the endpoint return value -
* the endpoint responsible for this key
*/
public List getNaturalEndpoints(String keyspaceName, String cf, String key);
public List getNaturalEndpoints(String keyspaceName, ByteBuffer key);
/**
* Takes the snapshot for the given keyspaces. A snapshot name must be specified.
*
* @param tag the tag given to the snapshot; may not be null or empty
* @param keyspaceNames the name of the keyspaces to snapshot; empty means "all."
*/
public void takeSnapshot(String tag, String... keyspaceNames) throws IOException;
/**
* Takes the snapshot of a specific column family. A snapshot name must be specified.
*
* @param keyspaceName the keyspace which holds the specified column family
* @param tableName the table to snapshot
* @param tag the tag given to the snapshot; may not be null or empty
*/
public void takeTableSnapshot(String keyspaceName, String tableName, String tag) throws IOException;
/**
* Takes the snapshot of a multiple column family from different keyspaces. A snapshot name must be specified.
*
* @param tag
* the tag given to the snapshot; may not be null or empty
* @param tableList
* list of tables from different keyspace in the form of ks1.cf1 ks2.cf2
*/
public void takeMultipleTableSnapshot(String tag, String... tableList) throws IOException;
/**
* Remove the snapshot with the given name from the given keyspaces.
* If no tag is specified we will remove all snapshots.
*/
public void clearSnapshot(String tag, String... keyspaceNames) throws IOException;
/**
* Get the details of all the snapshot
* @return A map of snapshotName to all its details in Tabular form.
*/
public Map getSnapshotDetails();
/**
* Get the true size taken by all snapshots across all keyspaces.
* @return True size taken by all the snapshots.
*/
public long trueSnapshotsSize();
/**
* Forces refresh of values stored in system.size_estimates of all column families.
*/
public void refreshSizeEstimates() throws ExecutionException;
/**
* Removes extraneous entries in system.size_estimates.
*/
public void cleanupSizeEstimates();
/**
* Forces major compaction of a single keyspace
*/
public void forceKeyspaceCompaction(boolean splitOutput, String keyspaceName, String... tableNames) throws IOException, ExecutionException, InterruptedException;
/**
* Trigger a cleanup of keys on a single keyspace
*/
@Deprecated
public int forceKeyspaceCleanup(String keyspaceName, String... tables) throws IOException, ExecutionException, InterruptedException;
public int forceKeyspaceCleanup(int jobs, String keyspaceName, String... tables) throws IOException, ExecutionException, InterruptedException;
/**
* Scrub (deserialize + reserialize at the latest version, skipping bad rows if any) the given keyspace.
* If tableNames array is empty, all CFs are scrubbed.
*
* Scrubbed CFs will be snapshotted first, if disableSnapshot is false
*/
@Deprecated
public int scrub(boolean disableSnapshot, boolean skipCorrupted, String keyspaceName, String... tableNames) throws IOException, ExecutionException, InterruptedException;
@Deprecated
public int scrub(boolean disableSnapshot, boolean skipCorrupted, boolean checkData, String keyspaceName, String... tableNames) throws IOException, ExecutionException, InterruptedException;
@Deprecated
public int scrub(boolean disableSnapshot, boolean skipCorrupted, boolean checkData, int jobs, String keyspaceName, String... columnFamilies) throws IOException, ExecutionException, InterruptedException;
public int scrub(boolean disableSnapshot, boolean skipCorrupted, boolean checkData, boolean reinsertOverflowedTTL, int jobs, String keyspaceName, String... columnFamilies) throws IOException, ExecutionException, InterruptedException;
/**
* Verify (checksums of) the given keyspace.
* If tableNames array is empty, all CFs are verified.
*
* The entire sstable will be read to ensure each cell validates if extendedVerify is true
*/
public int verify(boolean extendedVerify, String keyspaceName, String... tableNames) throws IOException, ExecutionException, InterruptedException;
/**
* Rewrite all sstables to the latest version.
* Unlike scrub, it doesn't skip bad rows and do not snapshot sstables first.
*/
@Deprecated
public int upgradeSSTables(String keyspaceName, boolean excludeCurrentVersion, String... tableNames) throws IOException, ExecutionException, InterruptedException;
public int upgradeSSTables(String keyspaceName, boolean excludeCurrentVersion, int jobs, String... tableNames) throws IOException, ExecutionException, InterruptedException;
/**
* Flush all memtables for the given column families, or all columnfamilies for the given keyspace
* if none are explicitly listed.
* @param keyspaceName
* @param tableNames
* @throws IOException
*/
public void forceKeyspaceFlush(String keyspaceName, String... tableNames) throws IOException, ExecutionException, InterruptedException;
/**
* Invoke repair asynchronously.
* You can track repair progress by subscribing JMX notification sent from this StorageServiceMBean.
* Notification format is:
* type: "repair"
* userObject: int array of length 2, [0]=command number, [1]=ordinal of ActiveRepairService.Status
*
* @param keyspace Keyspace name to repair. Should not be null.
* @param options repair option.
* @return Repair command number, or 0 if nothing to repair
*/
public int repairAsync(String keyspace, Map options);
/**
* @deprecated use {@link #repairAsync(String keyspace, Map options)} instead.
*/
@Deprecated
public int forceRepairAsync(String keyspace, boolean isSequential, Collection dataCenters, Collection hosts, boolean primaryRange, boolean fullRepair, String... tableNames) throws IOException;
/**
* Invoke repair asynchronously.
* You can track repair progress by subscribing JMX notification sent from this StorageServiceMBean.
* Notification format is:
* type: "repair"
* userObject: int array of length 2, [0]=command number, [1]=ordinal of ActiveRepairService.Status
*
* @deprecated use {@link #repairAsync(String keyspace, Map options)} instead.
*
* @param parallelismDegree 0: sequential, 1: parallel, 2: DC parallel
* @return Repair command number, or 0 if nothing to repair
*/
@Deprecated
public int forceRepairAsync(String keyspace, int parallelismDegree, Collection dataCenters, Collection hosts, boolean primaryRange, boolean fullRepair, String... tableNames);
/**
* @deprecated use {@link #repairAsync(String keyspace, Map options)} instead.
*/
@Deprecated
public int forceRepairRangeAsync(String beginToken, String endToken, String keyspaceName, boolean isSequential, Collection dataCenters, Collection hosts, boolean fullRepair, String... tableNames) throws IOException;
/**
* Same as forceRepairAsync, but handles a specified range
*
* @deprecated use {@link #repairAsync(String keyspace, Map options)} instead.
*
* @param parallelismDegree 0: sequential, 1: parallel, 2: DC parallel
*/
@Deprecated
public int forceRepairRangeAsync(String beginToken, String endToken, String keyspaceName, int parallelismDegree, Collection dataCenters, Collection hosts, boolean fullRepair, String... tableNames);
/**
* @deprecated use {@link #repairAsync(String keyspace, Map options)} instead.
*/
@Deprecated
public int forceRepairAsync(String keyspace, boolean isSequential, boolean isLocal, boolean primaryRange, boolean fullRepair, String... tableNames);
/**
* @deprecated use {@link #repairAsync(String keyspace, Map options)} instead.
*/
@Deprecated
public int forceRepairRangeAsync(String beginToken, String endToken, String keyspaceName, boolean isSequential, boolean isLocal, boolean fullRepair, String... tableNames);
public void forceTerminateAllRepairSessions();
public void setRepairSessionMaxTreeDepth(int depth);
public int getRepairSessionMaxTreeDepth();
/**
* transfer this node's data to other machines and remove it from service.
*/
public void decommission() throws InterruptedException;
/**
* @param newToken token to move this node to.
* This node will unload its data onto its neighbors, and bootstrap to the new token.
*/
public void move(String newToken) throws IOException;
/**
* removeToken removes token (and all data associated with
* enpoint that had it) from the ring
*/
public void removeNode(String token);
/**
* Get the status of a token removal.
*/
public String getRemovalStatus();
/**
* Force a remove operation to finish.
*/
public void forceRemoveCompletion();
/**
* set the logging level at runtime
*
* If both classQualifer and level are empty/null, it will reload the configuration to reset.
* If classQualifer is not empty but level is empty/null, it will set the level to null for the defined classQualifer
* If level cannot be parsed, then the level will be defaulted to DEBUG
*
* The logback configuration should have < jmxConfigurator /> set
*
* @param classQualifier The logger's classQualifer
* @param level The log level
* @throws Exception
*
* @see ch.qos.logback.classic.Level#toLevel(String)
*/
public void setLoggingLevel(String classQualifier, String level) throws Exception;
/** get the runtime logging levels */
public Map getLoggingLevels();
/** get the operational mode (leaving, joining, normal, decommissioned, client) **/
public String getOperationMode();
/** Returns whether the storage service is starting or not */
public boolean isStarting();
/** get the progress of a drain operation */
public String getDrainProgress();
/** makes node unavailable for writes, flushes memtables and replays commitlog. */
public void drain() throws IOException, InterruptedException, ExecutionException;
/**
* Truncates (deletes) the given table from the provided keyspace.
* Calling truncate results in actual deletion of all data in the cluster
* under the given table and it will fail unless all hosts are up.
* All data in the given column family will be deleted, but its definition
* will not be affected.
*
* @param keyspace The keyspace to delete from
* @param table The column family to delete data from.
*/
public void truncate(String keyspace, String table)throws TimeoutException, IOException;
/**
* given a list of tokens (representing the nodes in the cluster), returns
* a mapping from "token -> %age of cluster owned by that token"
*/
public Map getOwnership();
/**
* Effective ownership is % of the data each node owns given the keyspace
* we calculate the percentage using replication factor.
* If Keyspace == null, this method will try to verify if all the keyspaces
* in the cluster have the same replication strategies and if yes then we will
* use the first else a empty Map is returned.
*/
public Map effectiveOwnership(String keyspace) throws IllegalStateException;
public List getKeyspaces();
public List getNonSystemKeyspaces();
public List getNonLocalStrategyKeyspaces();
/**
* Change endpointsnitch class and dynamic-ness (and dynamic attributes) at runtime
* @param epSnitchClassName the canonical path name for a class implementing IEndpointSnitch
* @param dynamic boolean that decides whether dynamicsnitch is used or not
* @param dynamicUpdateInterval integer, in ms (default 100)
* @param dynamicResetInterval integer, in ms (default 600,000)
* @param dynamicBadnessThreshold double, (default 0.0)
*/
public void updateSnitch(String epSnitchClassName, Boolean dynamic, Integer dynamicUpdateInterval, Integer dynamicResetInterval, Double dynamicBadnessThreshold) throws ClassNotFoundException;
// allows a user to forcibly 'kill' a sick node
public void stopGossiping();
// allows a user to recover a forcibly 'killed' node
public void startGossiping();
// allows a user to see whether gossip is running or not
public boolean isGossipRunning();
// allows a user to forcibly completely stop cassandra
public void stopDaemon();
// to determine if gossip is disabled
public boolean isInitialized();
// allows a user to disable thrift
public void stopRPCServer();
// allows a user to reenable thrift
public void startRPCServer();
// to determine if thrift is running
public boolean isRPCServerRunning();
public void stopNativeTransport();
public void startNativeTransport();
public boolean isNativeTransportRunning();
// allows a node that have been started without joining the ring to join it
public void joinRing() throws IOException;
public boolean isJoined();
public boolean isDrained();
public boolean isDraining();
/** Check if currently bootstrapping.
* Note this becomes false before {@link org.apache.cassandra.db.SystemKeyspace#bootstrapComplete()} is called,
* as setting bootstrap to complete is called only when the node joins the ring.
* @return True prior to bootstrap streaming completing. False prior to start of bootstrap and post streaming.
*/
public boolean isBootstrapMode();
public void setStreamThroughputMbPerSec(int value);
public int getStreamThroughputMbPerSec();
public void setInterDCStreamThroughputMbPerSec(int value);
public int getInterDCStreamThroughputMbPerSec();
public int getConcurrentCompactors();
public int getCompactionThroughputMbPerSec();
public void setCompactionThroughputMbPerSec(int value);
public boolean isIncrementalBackupsEnabled();
public void setIncrementalBackupsEnabled(boolean value);
/**
* Initiate a process of streaming data for which we are responsible from other nodes. It is similar to bootstrap
* except meant to be used on a node which is already in the cluster (typically containing no data) as an
* alternative to running repair.
*
* @param sourceDc Name of DC from which to select sources for streaming or null to pick any node
*/
public void rebuild(String sourceDc);
/** Starts a bulk load and blocks until it completes. */
public void bulkLoad(String directory);
/**
* Starts a bulk load asynchronously and returns the String representation of the planID for the new
* streaming session.
*/
public String bulkLoadAsync(String directory);
public void rescheduleFailedDeletions();
/**
* Load new SSTables to the given keyspace/table
*
* @param ksName The parent keyspace name
* @param cfName The ColumnFamily name where SSTables belong
*/
public void loadNewSSTables(String ksName, String tableName);
/**
* Return a List of Tokens representing a sample of keys across all ColumnFamilyStores.
*
* Note: this should be left as an operation, not an attribute (methods starting with "get")
* to avoid sending potentially multiple MB of data when accessing this mbean by default. See CASSANDRA-4452.
*
* @return set of Tokens as Strings
*/
public List sampleKeyRange();
/**
* rebuild the specified indexes
*/
public void rebuildSecondaryIndex(String ksName, String cfName, String... idxNames);
public void resetLocalSchema() throws IOException;
public void reloadLocalSchema();
/**
* Enables/Disables tracing for the whole system. Only thrift requests can start tracing currently.
*
* @param probability
* ]0,1[ will enable tracing on a partial number of requests with the provided probability. 0 will
* disable tracing and 1 will enable tracing for all requests (which mich severely cripple the system)
*/
public void setTraceProbability(double probability);
/**
* Returns the configured tracing probability.
*/
public double getTraceProbability();
void disableAutoCompaction(String ks, String ... tables) throws IOException;
void enableAutoCompaction(String ks, String ... tables) throws IOException;
public void deliverHints(String host) throws UnknownHostException;
/** Returns the name of the cluster */
public String getClusterName();
/** Returns the cluster partitioner */
public String getPartitionerName();
/** Returns the threshold for warning of queries with many tombstones */
public int getTombstoneWarnThreshold();
/** Sets the threshold for warning queries with many tombstones */
public void setTombstoneWarnThreshold(int tombstoneDebugThreshold);
/** Returns the threshold for abandoning queries with many tombstones */
public int getTombstoneFailureThreshold();
/** Sets the threshold for abandoning queries with many tombstones */
public void setTombstoneFailureThreshold(int tombstoneDebugThreshold);
/** Returns the number of rows cached at the coordinator before filtering/index queries log a warning. */
public int getCachedReplicaRowsWarnThreshold();
/** Sets the number of rows cached at the coordinator before filtering/index queries log a warning. */
public void setCachedReplicaRowsWarnThreshold(int threshold);
/** Returns the number of rows cached at the coordinator before filtering/index queries fail outright. */
public int getCachedReplicaRowsFailThreshold();
/** Sets the number of rows cached at the coordinator before filtering/index queries fail outright. */
public void setCachedReplicaRowsFailThreshold(int threshold);
/** Returns the threshold for rejecting queries due to a large batch size */
public int getBatchSizeFailureThreshold();
/** Sets the threshold for rejecting queries due to a large batch size */
public void setBatchSizeFailureThreshold(int batchSizeDebugThreshold);
/** Sets the hinted handoff throttle in kb per second, per delivery thread. */
public void setHintedHandoffThrottleInKB(int throttleInKB);
/**
* Resume bootstrap streaming when there is failed data streaming.
*
*
* @return true if the node successfully starts resuming. (this does not mean bootstrap streaming was success.)
*/
public boolean resumeBootstrap();
/** Returns the max version that this node will negotiate for native protocol connections */
public int getMaxNativeProtocolVersion();
/** Returns a map of schema version -> list of endpoints reporting that version that we need schema updates for */
public Map> getOutstandingSchemaVersions();
}
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