org.apache.hadoop.hbase.client

Class TestReplicasClient.SlowMeCopro

java.lang.Object

org.apache.hadoop.hbase.coprocessor.BaseRegionObserver

org.apache.hadoop.hbase.client.TestReplicasClient.SlowMeCopro

All Implemented Interfaces:

Coprocessor, RegionObserver

Enclosing class:

TestReplicasClient

public static class TestReplicasClient.SlowMeCopro
extends BaseRegionObserver

This copro is used to synchronize the tests.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.coprocessor.RegionObserver

RegionObserver.MutationType

Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.Coprocessor

Coprocessor.State

Field Summary

Fields inherited from interface org.apache.hadoop.hbase.Coprocessor

PRIORITY_HIGHEST, PRIORITY_LOWEST, PRIORITY_SYSTEM, PRIORITY_USER, VERSION

Constructor Summary

Constructors

Constructor and Description
SlowMeCopro()

Method Summary

Modifier and Type	Method and Description
static AtomicReference<CountDownLatch>	getCdl()
void	preGetOp(ObserverContext<RegionCoprocessorEnvironment> e, Get get, List<Cell> results) Called before the client performs a Get
boolean	preScannerNext(ObserverContext<RegionCoprocessorEnvironment> e, InternalScanner s, List<Result> results, int limit, boolean hasMore) Called before the client asks for the next row on a scanner.
RegionScanner	preScannerOpen(ObserverContext<RegionCoprocessorEnvironment> e, Scan scan, RegionScanner s) Called before the client opens a new scanner.

Methods inherited from class org.apache.hadoop.hbase.coprocessor.BaseRegionObserver

postAppend, postBatchMutate, postBatchMutateIndispensably, postBulkLoadHFile, postCheckAndDelete, postCheckAndPut, postClose, postCloseRegionOperation, postCompact, postCompact, postCompactSelection, postCompactSelection, postCompleteSplit, postDelete, postExists, postFlush, postFlush, postGetClosestRowBefore, postGetOp, postIncrement, postIncrementColumnValue, postInstantiateDeleteTracker, postLogReplay, postMutationBeforeWAL, postOpen, postPut, postRollBackSplit, postScannerClose, postScannerFilterRow, postScannerNext, postScannerOpen, postSplit, postStartRegionOperation, postStoreFileReaderOpen, postWALRestore, postWALRestore, preAppend, preAppendAfterRowLock, preBatchMutate, preBulkLoadHFile, preCheckAndDelete, preCheckAndDeleteAfterRowLock, preCheckAndPut, preCheckAndPutAfterRowLock, preClose, preCompact, preCompact, preCompactScannerOpen, preCompactScannerOpen, preCompactSelection, preCompactSelection, preDelete, preExists, preFlush, preFlush, preFlushScannerOpen, preGetClosestRowBefore, preIncrement, preIncrementAfterRowLock, preIncrementColumnValue, preOpen, prePrepareTimeStampForDeleteVersion, prePut, preRollBackSplit, preScannerClose, preSplit, preSplit, preSplitAfterPONR, preSplitBeforePONR, preStoreFileReaderOpen, preStoreScannerOpen, preWALRestore, preWALRestore, start, stop

Methods inherited from class java.lang.Object

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

Constructor Detail

SlowMeCopro

public SlowMeCopro()

Method Detail

preGetOp

public void preGetOp(ObserverContext<RegionCoprocessorEnvironment> e,
                     Get get,
                     List<Cell> results)
              throws IOException

Description copied from interface: RegionObserver

Called before the client performs a Get

Call CoprocessorEnvironment#bypass to skip default actions

Call CoprocessorEnvironment#complete to skip any subsequent chained coprocessors

Specified by:

preGetOp in interface RegionObserver

Overrides:

preGetOp in class BaseRegionObserver

Parameters:

e - the environment provided by the region server

get - the Get request

results - The result to return to the client if default processing is bypassed. Can be modified. Will not be used if default processing is not bypassed.

Throws:

IOException - if an error occurred on the coprocessor

preScannerOpen

public RegionScanner preScannerOpen(ObserverContext<RegionCoprocessorEnvironment> e,
                                    Scan scan,
                                    RegionScanner s)
                             throws IOException

Description copied from interface: RegionObserver

Called before the client opens a new scanner.

Call CoprocessorEnvironment#bypass to skip default actions

Call CoprocessorEnvironment#complete to skip any subsequent chained coprocessors

Specified by:

preScannerOpen in interface RegionObserver

Overrides:

preScannerOpen in class BaseRegionObserver

Parameters:

e - the environment provided by the region server

scan - the Scan specification

s - if not null, the base scanner

Returns:

an RegionScanner instance to use instead of the base scanner if overriding default behavior, null otherwise

Throws:

IOException - if an error occurred on the coprocessor

preScannerNext

public boolean preScannerNext(ObserverContext<RegionCoprocessorEnvironment> e,
                              InternalScanner s,
                              List<Result> results,
                              int limit,
                              boolean hasMore)
                       throws IOException

Description copied from interface: RegionObserver

Called before the client asks for the next row on a scanner.

Call CoprocessorEnvironment#bypass to skip default actions

Call CoprocessorEnvironment#complete to skip any subsequent chained coprocessors

Specified by:

preScannerNext in interface RegionObserver

Overrides:

preScannerNext in class BaseRegionObserver

Parameters:

e - the environment provided by the region server

s - the scanner

results - The result to return to the client if default processing is bypassed. Can be modified. Will not be returned if default processing is not bypassed.

limit - the maximum number of results to return

hasMore - the 'has more' indication

Returns:

'has more' indication that should be sent to client

Throws:

IOException - if an error occurred on the coprocessor

getCdl

public static AtomicReference<CountDownLatch> getCdl()