Package org.apache.hadoop.hdfs

Class DFSClientFaultInjector

java.lang.Object

org.apache.hadoop.hdfs.DFSClientFaultInjector

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

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

Field Summary

Fields

Modifier and Type	Field	Description
static java.util.concurrent.atomic.AtomicLong	exceptionNum

Constructor Summary

Constructors

Constructor	Description
DFSClientFaultInjector()

Method Summary

Modifier and Type	Method	Description
boolean	corruptPacket()
void	delayWhenRenewLeaseTimeout()
boolean	failPacket()
void	fetchFromDatanodeException()
static DFSClientFaultInjector	get()
void	onCreateBlockReader(LocatedBlock block, int chunkIndex, long offset, long length)
void	readFromDatanodeDelay()
static void	set(DFSClientFaultInjector instance)
boolean	skipRollingRestartWait()
void	sleepBeforeHedgedGet()
void	startFetchFromDatanode()
boolean	uncorruptPacket()

Methods inherited from class java.lang.Object

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

Field Detail

exceptionNum

public static java.util.concurrent.atomic.AtomicLong exceptionNum

Constructor Detail

DFSClientFaultInjector

public DFSClientFaultInjector()

Method Detail

get

public static DFSClientFaultInjector get()

set

public static void set(DFSClientFaultInjector instance)

corruptPacket

public boolean corruptPacket()

uncorruptPacket

public boolean uncorruptPacket()

failPacket

public boolean failPacket()

startFetchFromDatanode

public void startFetchFromDatanode()

fetchFromDatanodeException

public void fetchFromDatanodeException()

readFromDatanodeDelay

public void readFromDatanodeDelay()

skipRollingRestartWait

public boolean skipRollingRestartWait()

sleepBeforeHedgedGet

public void sleepBeforeHedgedGet()

delayWhenRenewLeaseTimeout

public void delayWhenRenewLeaseTimeout()

onCreateBlockReader

public void onCreateBlockReader(LocatedBlock block,
                                int chunkIndex,
                                long offset,
                                long length)