Package org.elasticsearch.indices.recovery

Class RecoverySourceHandler

java.lang.Object

org.elasticsearch.indices.recovery.RecoverySourceHandler

public class RecoverySourceHandler
extends java.lang.Object

RecoverySourceHandler handles the three phases of shard recovery, which is everything relating to copying the segment files as well as sending translog operations across the wire once the segments have been copied. Note: There is always one source handler per recovery that handles all the file and translog transfer. This handler is completely isolated from other recoveries while the RateLimiter passed via RecoverySettings is shared across recoveries originating from this nodes to throttle the number bytes send during file transfer. The transaction log phase bypasses the rate limiter entirely.

Field Summary

Fields

Modifier and Type	Field	Description
protected org.apache.logging.log4j.Logger	logger

Constructor Summary

Constructors

Constructor	Description
RecoverySourceHandler(IndexShard shard, RecoveryTargetHandler recoveryTarget, StartRecoveryRequest request, int fileChunkSizeInBytes, int maxConcurrentFileChunks)

Method Summary

Modifier and Type	Method	Description
void	cancel(java.lang.String reason)	Cancels the recovery and interrupts all eligible threads.
protected void	failEngine(java.io.IOException cause)
StartRecoveryRequest	getRequest()
org.elasticsearch.indices.recovery.RecoverySourceHandler.SendFileResult	phase1(org.apache.lucene.index.IndexCommit snapshot, java.util.function.Supplier<java.lang.Integer> translogOps)	Perform phase1 of the recovery operations.
void	recoverToTarget(ActionListener<RecoveryResponse> listener)	performs the recovery from the local engine to the target
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final org.apache.logging.log4j.Logger logger

Constructor Detail

RecoverySourceHandler

public RecoverySourceHandler(IndexShard shard,
                             RecoveryTargetHandler recoveryTarget,
                             StartRecoveryRequest request,
                             int fileChunkSizeInBytes,
                             int maxConcurrentFileChunks)

Method Detail

getRequest

public StartRecoveryRequest getRequest()

recoverToTarget

public void recoverToTarget(ActionListener<RecoveryResponse> listener)

performs the recovery from the local engine to the target

phase1

public org.elasticsearch.indices.recovery.RecoverySourceHandler.SendFileResult phase1(org.apache.lucene.index.IndexCommit snapshot,
                                                                                      java.util.function.Supplier<java.lang.Integer> translogOps)

Perform phase1 of the recovery operations. Once this IndexCommit snapshot has been performed no commit operations (files being fsync'd) are effectively allowed on this index until all recovery phases are done

Phase1 examines the segment files on the target node and copies over the segments that are missing. Only segments that have the same size and checksum can be reused

cancel

public void cancel(java.lang.String reason)

Cancels the recovery and interrupts all eligible threads.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

failEngine

protected void failEngine(java.io.IOException cause)