org.apache.cassandra.service

Class ActiveRepairService

java.lang.Object

org.apache.cassandra.service.ActiveRepairService

All Implemented Interfaces:

IEndpointStateChangeSubscriber, IFailureDetectionEventListener, ActiveRepairServiceMBean

public class ActiveRepairService
extends java.lang.Object
implements IEndpointStateChangeSubscriber, IFailureDetectionEventListener, ActiveRepairServiceMBean

ActiveRepairService is the starting point for manual "active" repairs. Each user triggered repair will correspond to one or multiple repair session, one for each token range to repair. On repair session might repair multiple column families. For each of those column families, the repair session will request merkle trees for each replica of the range being repaired, diff those trees upon receiving them, schedule the streaming ofthe parts to repair (based on the tree diffs) and wait for all those operation. See RepairSession for more details. The creation of a repair session is done through the submitRepairSession that returns a future on the completion of that session.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ActiveRepairService.ConsistentSessions
static class	ActiveRepairService.ParentRepairSession We keep a ParentRepairSession around for the duration of the entire repair, for example, on a 256 token vnode rf=3 cluster we would have 768 RepairSession but only one ParentRepairSession.
static class	ActiveRepairService.ParentRepairStatus
static class	ActiveRepairService.RepairCommandExecutorHandle

Field Summary

Fields

Modifier and Type	Field and Description
ActiveRepairService.ConsistentSessions	consistent
static ActiveRepairService	instance
static java.util.UUID	NO_PENDING_REPAIR
DebuggableThreadPoolExecutor	snapshotExecutor
static long	UNREPAIRED_SSTABLE

Fields inherited from interface org.apache.cassandra.service.ActiveRepairServiceMBean

MBEAN_NAME

Constructor Summary

Constructors

Constructor and Description
ActiveRepairService(IFailureDetector failureDetector, Gossiper gossiper)

Method Summary

Modifier and Type	Method and Description
void	abort(java.util.function.Predicate<ActiveRepairService.ParentRepairSession> predicate, java.lang.String message) Remove any parent repair sessions matching predicate
void	beforeChange(InetAddressAndPort endpoint, EndpointState currentState, ApplicationState newStateKey, VersionedValue newValue)
void	cleanUp(java.util.UUID parentRepairSession, java.util.Set<InetAddressAndPort> endpoints) Send Verb.CLEANUP_MSG to the given endpoints.
java.util.List<javax.management.openmbean.CompositeData>	cleanupPending(java.util.List<java.lang.String> schemaArgs, java.lang.String rangeString, boolean force)
void	convict(InetAddressAndPort ep, double phi) Something has happened to a remote node - if that node is a coordinator, we mark the parent repair session id as failed.
void	failSession(java.lang.String session, boolean force)
static EndpointsForRange	getNeighbors(java.lang.String keyspaceName, java.lang.Iterable<Range<Token>> keyspaceLocalRanges, Range<Token> toRepair, java.util.Collection<java.lang.String> dataCenters, java.util.Collection<java.lang.String> hosts) Return all of the neighbors with whom we share the provided range.
ActiveRepairService.ParentRepairSession	getParentRepairSession(java.util.UUID parentSessionId)
java.util.List<javax.management.openmbean.CompositeData>	getPendingStats(java.util.List<java.lang.String> schemaArgs, java.lang.String rangeString)
int	getRepairPendingCompactionRejectThreshold()
int	getRepairSessionSpaceInMegabytes()
java.util.List<javax.management.openmbean.CompositeData>	getRepairStats(java.util.List<java.lang.String> schemaArgs, java.lang.String rangeString)
java.util.List<java.util.Map<java.lang.String,java.lang.String>>	getSessions(boolean all, java.lang.String rangesStr)
boolean	getUseOffheapMerkleTrees()
void	handleMessage(Message<? extends RepairMessage> message)
void	onAlive(InetAddressAndPort endpoint, EndpointState state)
void	onChange(InetAddressAndPort endpoint, ApplicationState state, VersionedValue value)
void	onDead(InetAddressAndPort endpoint, EndpointState state)
void	onJoin(InetAddressAndPort endpoint, EndpointState epState) Use to inform interested parties about the change in the state for specified endpoint
void	onRemove(InetAddressAndPort endpoint)
void	onRestart(InetAddressAndPort endpoint, EndpointState state) Called whenever a node is restarted.
int	parentRepairSessionCount()
int	parentRepairSessionsCount() Each ongoing repair (incremental and non-incremental) is represented by a ActiveRepairService.ParentRepairSession entry in the ActiveRepairService cache.
java.util.UUID	prepareForRepair(java.util.UUID parentRepairSession, InetAddressAndPort coordinator, java.util.Set<InetAddressAndPort> endpoints, RepairOption options, boolean isForcedRepair, java.util.List<ColumnFamilyStore> columnFamilyStores)
void	recordRepairStatus(int cmd, ActiveRepairService.ParentRepairStatus parentRepairStatus, java.util.List<java.lang.String> messages)
void	registerParentRepairSession(java.util.UUID parentRepairSession, InetAddressAndPort coordinator, java.util.List<ColumnFamilyStore> columnFamilyStores, java.util.Collection<Range<Token>> ranges, boolean isIncremental, long repairedAt, boolean isGlobal, PreviewKind previewKind)
ActiveRepairService.ParentRepairSession	removeParentRepairSession(java.util.UUID parentSessionId) called when the repair session is done - either failed or anticompaction has completed clears out any snapshots created by this repair
static java.util.concurrent.ThreadPoolExecutor	repairCommandExecutor()
int	sessionCount()
void	setRepairPendingCompactionRejectThreshold(int value)
void	setRepairSessionSpaceInMegabytes(int sizeInMegabytes)
void	setUseOffheapMerkleTrees(boolean value)
void	start()
void	stop()
RepairSession	submitRepairSession(java.util.UUID parentRepairSession, CommonRange range, java.lang.String keyspace, RepairParallelism parallelismDegree, boolean isIncremental, boolean pullRepair, PreviewKind previewKind, boolean optimiseStreams, com.google.common.util.concurrent.ListeningExecutorService executor, Scheduler validationScheduler, java.lang.String... cfnames) Requests repairs for the given keyspace and column families.
void	terminateSessions()
static boolean	verifyCompactionsPendingThreshold(java.util.UUID parentRepairSession, PreviewKind previewKind)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

consistent

public final ActiveRepairService.ConsistentSessions consistent

instance

public static final ActiveRepairService instance

UNREPAIRED_SSTABLE

public static final long UNREPAIRED_SSTABLE

See Also:

Constant Field Values

NO_PENDING_REPAIR

public static final java.util.UUID NO_PENDING_REPAIR

snapshotExecutor

public final DebuggableThreadPoolExecutor snapshotExecutor

Constructor Detail

ActiveRepairService

public ActiveRepairService(IFailureDetector failureDetector,
                           Gossiper gossiper)

Method Detail

repairCommandExecutor

public static java.util.concurrent.ThreadPoolExecutor repairCommandExecutor()

start

public void start()

stop

public void stop()

getSessions

public java.util.List<java.util.Map<java.lang.String,java.lang.String>> getSessions(boolean all,
                                                                                    java.lang.String rangesStr)

Specified by:

getSessions in interface ActiveRepairServiceMBean

failSession

public void failSession(java.lang.String session,
                        boolean force)

Specified by:

failSession in interface ActiveRepairServiceMBean

setRepairSessionSpaceInMegabytes

public void setRepairSessionSpaceInMegabytes(int sizeInMegabytes)

Specified by:

setRepairSessionSpaceInMegabytes in interface ActiveRepairServiceMBean

getRepairSessionSpaceInMegabytes

public int getRepairSessionSpaceInMegabytes()

Specified by:

getRepairSessionSpaceInMegabytes in interface ActiveRepairServiceMBean

getRepairStats

public java.util.List<javax.management.openmbean.CompositeData> getRepairStats(java.util.List<java.lang.String> schemaArgs,
                                                                               java.lang.String rangeString)

Specified by:

getRepairStats in interface ActiveRepairServiceMBean

getPendingStats

public java.util.List<javax.management.openmbean.CompositeData> getPendingStats(java.util.List<java.lang.String> schemaArgs,
                                                                                java.lang.String rangeString)

Specified by:

getPendingStats in interface ActiveRepairServiceMBean

cleanupPending

public java.util.List<javax.management.openmbean.CompositeData> cleanupPending(java.util.List<java.lang.String> schemaArgs,
                                                                               java.lang.String rangeString,
                                                                               boolean force)

Specified by:

cleanupPending in interface ActiveRepairServiceMBean

parentRepairSessionsCount

public int parentRepairSessionsCount()

Description copied from interface: ActiveRepairServiceMBean

Each ongoing repair (incremental and non-incremental) is represented by a ActiveRepairService.ParentRepairSession entry in the ActiveRepairService cache. Returns the current number of ongoing repairs (the current number of cached entries).

Specified by:

parentRepairSessionsCount in interface ActiveRepairServiceMBean

Returns:

current size of the internal cache holding ActiveRepairService.ParentRepairSession instances

submitRepairSession

public RepairSession submitRepairSession(java.util.UUID parentRepairSession,
                                         CommonRange range,
                                         java.lang.String keyspace,
                                         RepairParallelism parallelismDegree,
                                         boolean isIncremental,
                                         boolean pullRepair,
                                         PreviewKind previewKind,
                                         boolean optimiseStreams,
                                         com.google.common.util.concurrent.ListeningExecutorService executor,
                                         Scheduler validationScheduler,
                                         java.lang.String... cfnames)

Requests repairs for the given keyspace and column families.

Returns:

Future for asynchronous call or null if there is no need to repair

getUseOffheapMerkleTrees

public boolean getUseOffheapMerkleTrees()

Specified by:

getUseOffheapMerkleTrees in interface ActiveRepairServiceMBean

setUseOffheapMerkleTrees

public void setUseOffheapMerkleTrees(boolean value)

Specified by:

setUseOffheapMerkleTrees in interface ActiveRepairServiceMBean

terminateSessions

public void terminateSessions()

recordRepairStatus

public void recordRepairStatus(int cmd,
                               ActiveRepairService.ParentRepairStatus parentRepairStatus,
                               java.util.List<java.lang.String> messages)

getNeighbors

public static EndpointsForRange getNeighbors(java.lang.String keyspaceName,
                                             java.lang.Iterable<Range<Token>> keyspaceLocalRanges,
                                             Range<Token> toRepair,
                                             java.util.Collection<java.lang.String> dataCenters,
                                             java.util.Collection<java.lang.String> hosts)

Return all of the neighbors with whom we share the provided range.

Parameters:

keyspaceName - keyspace to repair

keyspaceLocalRanges - local-range for given keyspaceName

toRepair - token to repair

dataCenters - the data centers to involve in the repair

Returns:

neighbors with whom we share the provided range

verifyCompactionsPendingThreshold

public static boolean verifyCompactionsPendingThreshold(java.util.UUID parentRepairSession,
                                                        PreviewKind previewKind)

prepareForRepair

public java.util.UUID prepareForRepair(java.util.UUID parentRepairSession,
                                       InetAddressAndPort coordinator,
                                       java.util.Set<InetAddressAndPort> endpoints,
                                       RepairOption options,
                                       boolean isForcedRepair,
                                       java.util.List<ColumnFamilyStore> columnFamilyStores)

cleanUp

public void cleanUp(java.util.UUID parentRepairSession,
                    java.util.Set<InetAddressAndPort> endpoints)

Send Verb.CLEANUP_MSG to the given endpoints. This results in removing parent session object from the endpoint's cache. This method does not throw an exception in case of a messaging failure.

registerParentRepairSession

public void registerParentRepairSession(java.util.UUID parentRepairSession,
                                        InetAddressAndPort coordinator,
                                        java.util.List<ColumnFamilyStore> columnFamilyStores,
                                        java.util.Collection<Range<Token>> ranges,
                                        boolean isIncremental,
                                        long repairedAt,
                                        boolean isGlobal,
                                        PreviewKind previewKind)

getParentRepairSession

public ActiveRepairService.ParentRepairSession getParentRepairSession(java.util.UUID parentSessionId)

removeParentRepairSession

public ActiveRepairService.ParentRepairSession removeParentRepairSession(java.util.UUID parentSessionId)

called when the repair session is done - either failed or anticompaction has completed clears out any snapshots created by this repair

Parameters:

parentSessionId - id of parent session

Returns:

parent session of given id or null if there is not such

See Also:

CassandraTableRepairManager.snapshot(String, Collection, boolean)

handleMessage

public void handleMessage(Message<? extends RepairMessage> message)

onJoin

public void onJoin(InetAddressAndPort endpoint,
                   EndpointState epState)

Description copied from interface: IEndpointStateChangeSubscriber

Use to inform interested parties about the change in the state for specified endpoint

Specified by:

onJoin in interface IEndpointStateChangeSubscriber

Parameters:

endpoint - endpoint for which the state change occurred.

epState - state that actually changed for the above endpoint.

beforeChange

public void beforeChange(InetAddressAndPort endpoint,
                         EndpointState currentState,
                         ApplicationState newStateKey,
                         VersionedValue newValue)

Specified by:

beforeChange in interface IEndpointStateChangeSubscriber

onChange

public void onChange(InetAddressAndPort endpoint,
                     ApplicationState state,
                     VersionedValue value)

Specified by:

onChange in interface IEndpointStateChangeSubscriber

onAlive

public void onAlive(InetAddressAndPort endpoint,
                    EndpointState state)

Specified by:

onAlive in interface IEndpointStateChangeSubscriber

onDead

public void onDead(InetAddressAndPort endpoint,
                   EndpointState state)

Specified by:

onDead in interface IEndpointStateChangeSubscriber

onRemove

public void onRemove(InetAddressAndPort endpoint)

Specified by:

onRemove in interface IEndpointStateChangeSubscriber

onRestart

public void onRestart(InetAddressAndPort endpoint,
                      EndpointState state)

Description copied from interface: IEndpointStateChangeSubscriber

Called whenever a node is restarted. Note that there is no guarantee when that happens that the node was previously marked down. It will have only if state.isAlive() == false as state is from before the restarted node is marked up.

Specified by:

onRestart in interface IEndpointStateChangeSubscriber

convict

public void convict(InetAddressAndPort ep,
                    double phi)

Something has happened to a remote node - if that node is a coordinator, we mark the parent repair session id as failed. The fail marker is kept in the map for 24h to make sure that if the coordinator does not agree that the repair failed, we need to fail the entire repair session

Specified by:

convict in interface IFailureDetectionEventListener

Parameters:

ep - endpoint to be convicted

phi - the value of phi with with ep was convicted

getRepairPendingCompactionRejectThreshold

public int getRepairPendingCompactionRejectThreshold()

Specified by:

getRepairPendingCompactionRejectThreshold in interface ActiveRepairServiceMBean

setRepairPendingCompactionRejectThreshold

public void setRepairPendingCompactionRejectThreshold(int value)

Specified by:

setRepairPendingCompactionRejectThreshold in interface ActiveRepairServiceMBean

abort

public void abort(java.util.function.Predicate<ActiveRepairService.ParentRepairSession> predicate,
                  java.lang.String message)

Remove any parent repair sessions matching predicate

parentRepairSessionCount

public int parentRepairSessionCount()

sessionCount

public int sessionCount()