org.apache.hadoop.hbase.client

Class TestReplicaWithCluster.RegionServerHostingPrimayMetaRegionSlowCopro

java.lang.Object

org.apache.hadoop.hbase.coprocessor.BaseRegionObserver

org.apache.hadoop.hbase.client.TestReplicaWithCluster.RegionServerHostingPrimayMetaRegionSlowCopro

All Implemented Interfaces:

Coprocessor, RegionObserver

Enclosing class:

TestReplicaWithCluster

public static class TestReplicaWithCluster.RegionServerHostingPrimayMetaRegionSlowCopro
extends BaseRegionObserver

This copro is used to slow down the primary meta region scan a bit

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
RegionServerHostingPrimayMetaRegionSlowCopro()

Method Summary

Modifier and Type	Method and Description
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, postBulkLoadHFile, postCheckAndDelete, postCheckAndPut, postClose, postCloseRegionOperation, postCommitStoreFile, 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, preCommitStoreFile, preCompact, preCompact, preCompactScannerOpen, preCompactScannerOpen, preCompactSelection, preCompactSelection, preDelete, preExists, preFlush, preFlush, preFlushScannerOpen, preGetClosestRowBefore, preGetOp, preIncrement, preIncrementAfterRowLock, preIncrementColumnValue, preOpen, prePrepareTimeStampForDeleteVersion, prePut, preRollBackSplit, preScannerClose, preScannerNext, 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

RegionServerHostingPrimayMetaRegionSlowCopro

public RegionServerHostingPrimayMetaRegionSlowCopro()

Method Detail

preScannerOpen

public RegionScanner preScannerOpen(ObserverContext<RegionCoprocessorEnvironment> e,
                                    Scan scan,
                                    RegionScanner s)
                             throws java.io.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:

java.io.IOException - if an error occurred on the coprocessor