Package org.apache.cassandra.repair.consistent

Class LocalSessions

java.lang.Object

org.apache.cassandra.repair.consistent.LocalSessions

public class LocalSessions
extends java.lang.Object

Manages all consistent repair sessions a node is participating in.

Since sessions need to be loaded, and since we need to handle cases where sessions might not exist, most of the logic around local sessions is implemented in this class, with the LocalSession class being treated more like a simple struct, in contrast with CoordinatorSession

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	LocalSessions.Listener

Field Summary

Fields

Modifier and Type	Field	Description
static int	CLEANUP_INTERVAL	How often LocalSessions.cleanup is run

Constructor Summary

Constructors

Constructor	Description
LocalSessions(SharedContext ctx)

Method Summary

Modifier and Type	Method	Description
protected LocalSession	buildSession(LocalSession.Builder builder)
void	cancelSession(TimeUUID sessionID, boolean force)	hook for operators to cancel sessions, cancelling from a non-coordinator is an error, unless force is set to true.
void	cleanup()	Auto fails and auto deletes timed out and old sessions Compaction will clean up the sstables still owned by a deleted session
CleanupSummary	cleanup(TableId tid, java.util.Collection<Range<Token>> ranges, boolean force)
void	deleteSession(TimeUUID sessionID)
void	failSession(LocalSession session, boolean sendMessage)
void	failSession(TimeUUID sessionID)
void	failSession(TimeUUID sessionID, boolean sendMessage)
protected InetAddressAndPort	getBroadcastAddressAndPort()
long	getFinalSessionRepairedAt(TimeUUID sessionID)	Returns the repairedAt time for a sessions which is unknown, failed, or finalized calling this for a session which is in progress throws an exception
protected ActiveRepairService.ParentRepairSession	getParentRepairSession(TimeUUID sessionID)
PendingStats	getPendingStats(TableId tid, java.util.Collection<Range<Token>> ranges)
RepairedState.Stats	getRepairedStats(TableId tid, java.util.Collection<Range<Token>> ranges)
LocalSession	getSession(TimeUUID sessionID)
void	handleFailSessionMessage(InetAddressAndPort from, FailSession msg)
void	handleFinalizeCommitMessage(Message<? extends RepairMessage> message)	Finalizes the repair session, completing it as successful.
void	handleFinalizeProposeMessage(Message<? extends RepairMessage> message)
void	handlePrepareMessage(Message<? extends RepairMessage> message)	The PrepareConsistentRequest promotes the parent repair session to a consistent incremental session, and isolates the data to be repaired from the rest of the table's data No response is sent to the repair coordinator until the data preparation / isolation has completed successfully.
void	handleStatusRequest(InetAddressAndPort from, StatusRequest request)
void	handleStatusResponse(InetAddressAndPort from, StatusResponse response)
protected boolean	isAlive(InetAddressAndPort address)
protected boolean	isNodeInitialized()
boolean	isSessionFinalized(TimeUUID sessionID)	determines if a local session exists, and if it's in the finalized state
boolean	isSessionInProgress(TimeUUID sessionID)	determines if a local session exists, and if it's not finalized or failed
boolean	isStarted()
void	maybeSetRepairing(TimeUUID sessionID)
static void	registerListener(LocalSessions.Listener listener)
protected void	sendMessage(InetAddressAndPort destination, Message<? extends RepairMessage> message)
void	sendStatusRequest(LocalSession session)
protected void	sessionCompleted(LocalSession session)
boolean	sessionExists(TimeUUID sessionID)	determines if a local session exists
protected boolean	sessionHasData(LocalSession session)
java.util.List<java.util.Map<java.lang.String,java.lang.String>>	sessionInfo(boolean all, java.util.Set<Range<Token>> ranges)
void	start()	Loads sessions out of the repairs table and sets state to started
void	stop()
static void	unregisterListener(LocalSessions.Listener listener)
static void	unsafeClearListeners()

Methods inherited from class java.lang.Object

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

Field Detail

CLEANUP_INTERVAL

public static final int CLEANUP_INTERVAL

How often LocalSessions.cleanup is run

Constructor Detail

LocalSessions

public LocalSessions(SharedContext ctx)

Method Detail

getBroadcastAddressAndPort

protected InetAddressAndPort getBroadcastAddressAndPort()

isAlive

protected boolean isAlive(InetAddressAndPort address)

isNodeInitialized

protected boolean isNodeInitialized()

sessionInfo

public java.util.List<java.util.Map<java.lang.String,java.lang.String>> sessionInfo(boolean all,
                                                                                          java.util.Set<Range<Token>> ranges)

getRepairedStats

public RepairedState.Stats getRepairedStats(TableId tid,
                                            java.util.Collection<Range<Token>> ranges)

getPendingStats

public PendingStats getPendingStats(TableId tid,
                                    java.util.Collection<Range<Token>> ranges)

cleanup

public CleanupSummary cleanup(TableId tid,
                              java.util.Collection<Range<Token>> ranges,
                              boolean force)

cancelSession

public void cancelSession(TimeUUID sessionID,
                          boolean force)

hook for operators to cancel sessions, cancelling from a non-coordinator is an error, unless force is set to true. Messages are sent out to other participants, but we don't wait for a response

start

public void start()

Loads sessions out of the repairs table and sets state to started

stop

public void stop()

isStarted

public boolean isStarted()

cleanup

public void cleanup()

Auto fails and auto deletes timed out and old sessions Compaction will clean up the sstables still owned by a deleted session

buildSession

protected LocalSession buildSession(LocalSession.Builder builder)

getSession

public LocalSession getSession(TimeUUID sessionID)

getParentRepairSession

protected ActiveRepairService.ParentRepairSession getParentRepairSession(TimeUUID sessionID)
                                                                  throws NoSuchRepairSessionException

Throws:

NoSuchRepairSessionException

sendMessage

protected void sendMessage(InetAddressAndPort destination,
                           Message<? extends RepairMessage> message)

failSession

public void failSession(TimeUUID sessionID)

failSession

public void failSession(TimeUUID sessionID,
                        boolean sendMessage)

failSession

public void failSession(LocalSession session,
                        boolean sendMessage)

deleteSession

public void deleteSession(TimeUUID sessionID)

handlePrepareMessage

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

The PrepareConsistentRequest promotes the parent repair session to a consistent incremental session, and isolates the data to be repaired from the rest of the table's data No response is sent to the repair coordinator until the data preparation / isolation has completed successfully. If the data preparation fails, a failure message is sent to the coordinator, cancelling the session.

maybeSetRepairing

public void maybeSetRepairing(TimeUUID sessionID)

handleFinalizeProposeMessage

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

sessionCompleted

protected void sessionCompleted(LocalSession session)

handleFinalizeCommitMessage

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

Finalizes the repair session, completing it as successful. This only changes the state of the session, it doesn't promote the siloed sstables to repaired. That will happen as part of the compaction process, and avoids having to worry about in progress compactions interfering with the promotion.

handleFailSessionMessage

public void handleFailSessionMessage(InetAddressAndPort from,
                                     FailSession msg)

sendStatusRequest

public void sendStatusRequest(LocalSession session)

handleStatusRequest

public void handleStatusRequest(InetAddressAndPort from,
                                StatusRequest request)

handleStatusResponse

public void handleStatusResponse(InetAddressAndPort from,
                                 StatusResponse response)

isSessionInProgress

public boolean isSessionInProgress(TimeUUID sessionID)

determines if a local session exists, and if it's not finalized or failed

isSessionFinalized

public boolean isSessionFinalized(TimeUUID sessionID)

determines if a local session exists, and if it's in the finalized state

sessionExists

public boolean sessionExists(TimeUUID sessionID)

determines if a local session exists

sessionHasData

protected boolean sessionHasData(LocalSession session)

getFinalSessionRepairedAt

public long getFinalSessionRepairedAt(TimeUUID sessionID)

Returns the repairedAt time for a sessions which is unknown, failed, or finalized calling this for a session which is in progress throws an exception

registerListener

public static void registerListener(LocalSessions.Listener listener)

unregisterListener

public static void unregisterListener(LocalSessions.Listener listener)

unsafeClearListeners

public static void unsafeClearListeners()