Package org.apache.hadoop.hdfs.server.datanode

Class DataNodeFaultInjector

java.lang.Object

org.apache.hadoop.hdfs.server.datanode.DataNodeFaultInjector

@VisibleForTesting
@Private
public class DataNodeFaultInjector
extends java.lang.Object

Used for injecting faults in DFSClient and DFSOutputStream tests. Calls into this are a no-op in production code.

Constructor Summary

Constructors

Constructor	Description
DataNodeFaultInjector()

Method Summary

Modifier and Type	Method	Description
void	badDecoding(java.nio.ByteBuffer[] outputs)	Used as a hook to inject data pollution into an erasure coding reconstruction.
void	blockUtilSendFullBlockReport()	Used as a hook to inject intercept when re-register.
void	delay()	Just delay a while.
void	delayAckLastPacket()	Used as a hook to delay sending the response of the last packet.
void	delayBlockReader()	Used as a hook to inject latency when read block in erasure coding reconstruction process.
void	delayDeleteReplica()	Just delay delete replica a while.
void	delaySendingAckToUpstream(java.lang.String upstreamAddr)
void	delayWhenOfferServiceHoldLock()	Used as a hook to inject intercept when BPOfferService hold lock.
void	delayWriteToDisk()	Used as a hook to delay writing a packet to disk.
void	delayWriteToOsCache()	Used as a hook to delay writing a packet to os cache.
boolean	dropHeartbeatPacket()
void	endOfferService()
void	failMirrorConnection()
void	failPipeline(ReplicaInPipeline replicaInfo, java.lang.String mirrorAddr)
static DataNodeFaultInjector	get()
void	getHdfsBlocksMetadata()
void	interceptBlockReader()	Used as a hook to inject intercept When finish reading from block.
void	interceptFreeBlockReaderBuffer()	Used as a hook to inject intercept when free the block reader buffer.
void	logDelaySendingAckToUpstream(java.lang.String upstreamAddr, long delayMs)	Used as a hook to intercept the latency of sending ack.
void	logDelaySendingPacketDownstream(java.lang.String mirrAddr, long delayMs)	Used as a hook to intercept the latency of sending packet.
void	markSlow(java.lang.String dnAddr, int[] replies)
void	noRegistration()
void	sendShortCircuitShmResponse()
static void	set(DataNodeFaultInjector injector)
void	startOfferService()
void	stopSendingPacketDownstream(java.lang.String mirrAddr)
void	stripedBlockChecksumReconstruction()	Used as a hook to inject failure in erasure coding checksum reconstruction process.
void	stripedBlockReconstruction()	Used as a hook to inject failure in erasure coding reconstruction process.
void	throwTooManyOpenFiles()
void	writeBlockAfterFlush()

Methods inherited from class java.lang.Object

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

Constructor Detail

DataNodeFaultInjector

public DataNodeFaultInjector()

Method Detail

get

public static DataNodeFaultInjector get()

set

public static void set(DataNodeFaultInjector injector)

getHdfsBlocksMetadata

public void getHdfsBlocksMetadata()

writeBlockAfterFlush

public void writeBlockAfterFlush()
                          throws java.io.IOException

Throws:

java.io.IOException

sendShortCircuitShmResponse

public void sendShortCircuitShmResponse()
                                 throws java.io.IOException

Throws:

java.io.IOException

dropHeartbeatPacket

public boolean dropHeartbeatPacket()

stopSendingPacketDownstream

public void stopSendingPacketDownstream(java.lang.String mirrAddr)
                                 throws java.io.IOException

Throws:

java.io.IOException

logDelaySendingPacketDownstream

public void logDelaySendingPacketDownstream(java.lang.String mirrAddr,
                                            long delayMs)
                                     throws java.io.IOException

Used as a hook to intercept the latency of sending packet.

Throws:

java.io.IOException

delaySendingAckToUpstream

public void delaySendingAckToUpstream(java.lang.String upstreamAddr)
                               throws java.io.IOException

Throws:

java.io.IOException

delayAckLastPacket

public void delayAckLastPacket()
                        throws java.io.IOException

Used as a hook to delay sending the response of the last packet.

Throws:

java.io.IOException

delayWriteToDisk

public void delayWriteToDisk()

Used as a hook to delay writing a packet to disk.

delayWriteToOsCache

public void delayWriteToOsCache()

Used as a hook to delay writing a packet to os cache.

logDelaySendingAckToUpstream

public void logDelaySendingAckToUpstream(java.lang.String upstreamAddr,
                                         long delayMs)
                                  throws java.io.IOException

Used as a hook to intercept the latency of sending ack.

Throws:

java.io.IOException

noRegistration

public void noRegistration()
                    throws java.io.IOException

Throws:

java.io.IOException

failMirrorConnection

public void failMirrorConnection()
                          throws java.io.IOException

Throws:

java.io.IOException

failPipeline

public void failPipeline(ReplicaInPipeline replicaInfo,
                         java.lang.String mirrorAddr)
                  throws java.io.IOException

Throws:

java.io.IOException

startOfferService

public void startOfferService()
                       throws java.lang.Exception

Throws:

java.lang.Exception

endOfferService

public void endOfferService()
                     throws java.lang.Exception

Throws:

java.lang.Exception

throwTooManyOpenFiles

public void throwTooManyOpenFiles()
                           throws java.io.FileNotFoundException

Throws:

java.io.FileNotFoundException

stripedBlockReconstruction

public void stripedBlockReconstruction()
                                throws java.io.IOException

Used as a hook to inject failure in erasure coding reconstruction process.

Throws:

java.io.IOException

stripedBlockChecksumReconstruction

public void stripedBlockChecksumReconstruction()
                                        throws java.io.IOException

Used as a hook to inject failure in erasure coding checksum reconstruction process.

Throws:

java.io.IOException

delayBlockReader

public void delayBlockReader()

Used as a hook to inject latency when read block in erasure coding reconstruction process.

interceptFreeBlockReaderBuffer

public void interceptFreeBlockReaderBuffer()

Used as a hook to inject intercept when free the block reader buffer.

interceptBlockReader

public void interceptBlockReader()

Used as a hook to inject intercept When finish reading from block.

delayWhenOfferServiceHoldLock

public void delayWhenOfferServiceHoldLock()

Used as a hook to inject intercept when BPOfferService hold lock.

blockUtilSendFullBlockReport

public void blockUtilSendFullBlockReport()

Used as a hook to inject intercept when re-register.

delay

public void delay()

Just delay a while.

badDecoding

public void badDecoding(java.nio.ByteBuffer[] outputs)

Used as a hook to inject data pollution into an erasure coding reconstruction.

markSlow

public void markSlow(java.lang.String dnAddr,
                     int[] replies)

delayDeleteReplica

public void delayDeleteReplica()

Just delay delete replica a while.