org.apache.hadoop.hbase.coprocessor

Class SampleRegionWALCoprocessor

java.lang.Object

org.apache.hadoop.hbase.coprocessor.SampleRegionWALCoprocessor

All Implemented Interfaces:

Coprocessor, RegionCoprocessor, RegionObserver, WALCoprocessor, WALObserver

public class SampleRegionWALCoprocessor
extends Object
implements WALCoprocessor, RegionCoprocessor, WALObserver, RegionObserver

Class for testing WALObserver coprocessor. It will monitor WAL writing and restoring, and modify passed-in WALEdit, i.e, ignore specified columns when writing, or add a KeyValue. On the other side, it checks whether the ignored column is still in WAL when Restoreed at region reconstruct.

Nested Class Summary

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

Coprocessor.State

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

RegionObserver.MutationType

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
SampleRegionWALCoprocessor()

Method Summary

Modifier and Type	Method and Description
Optional<RegionObserver>	getRegionObserver()
Optional<WALObserver>	getWALObserver()
boolean	isPostWALRestoreCalled()
boolean	isPostWALRollCalled()
boolean	isPostWALWriteCalled()
boolean	isPreWALRestoreCalled()
boolean	isPreWALRollCalled()
boolean	isPreWALWriteCalled()
void	postWALRestore(ObserverContext<? extends RegionCoprocessorEnvironment> env, RegionInfo info, WALKey logKey, WALEdit logEdit) Triggered after HRegion when WAL is Restoreed.
void	postWALRoll(ObserverContext<? extends WALCoprocessorEnvironment> ctx, org.apache.hadoop.fs.Path oldPath, org.apache.hadoop.fs.Path newPath)
void	postWALWrite(ObserverContext<? extends WALCoprocessorEnvironment> env, RegionInfo info, WALKey logKey, WALEdit logEdit)
void	preWALRestore(ObserverContext<? extends RegionCoprocessorEnvironment> env, RegionInfo info, WALKey logKey, WALEdit logEdit) Triggered before HRegion when WAL is Restoreed.
void	preWALRoll(ObserverContext<? extends WALCoprocessorEnvironment> ctx, org.apache.hadoop.fs.Path oldPath, org.apache.hadoop.fs.Path newPath)
void	preWALWrite(ObserverContext<? extends WALCoprocessorEnvironment> env, RegionInfo info, WALKey logKey, WALEdit logEdit)
void	setTestValues(byte[] tableName, byte[] row, byte[] igf, byte[] igq, byte[] chf, byte[] chq, byte[] addf, byte[] addq) Set values: with a table name, a column name which will be ignored, and a column name which will be added to WAL.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hbase.coprocessor.RegionCoprocessor

getBulkLoadObserver, getEndpointObserver

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

getServices, start, stop

Methods inherited from interface org.apache.hadoop.hbase.coprocessor.RegionObserver

postAppend, postBatchMutate, postBatchMutateIndispensably, postBulkLoadHFile, postCheckAndDelete, postCheckAndPut, postClose, postCloseRegionOperation, postCommitStoreFile, postCompact, postCompactSelection, postDelete, postExists, postFlush, postFlush, postGetOp, postIncrement, postInstantiateDeleteTracker, postMemStoreCompaction, postMutationBeforeWAL, postOpen, postPut, postReplayWALs, postScannerClose, postScannerFilterRow, postScannerNext, postScannerOpen, postStartRegionOperation, postStoreFileReaderOpen, preAppend, preAppendAfterRowLock, preBatchMutate, preBulkLoadHFile, preCheckAndDelete, preCheckAndDeleteAfterRowLock, preCheckAndPut, preCheckAndPutAfterRowLock, preClose, preCommitStoreFile, preCompact, preCompactScannerOpen, preCompactSelection, preDelete, preExists, preFlush, preFlush, preFlushScannerOpen, preGetOp, preIncrement, preIncrementAfterRowLock, preMemStoreCompaction, preMemStoreCompactionCompact, preMemStoreCompactionCompactScannerOpen, preOpen, prePrepareTimeStampForDeleteVersion, prePut, preReplayWALs, preScannerClose, preScannerNext, preScannerOpen, preStoreFileReaderOpen, preStoreScannerOpen

Constructor Detail

SampleRegionWALCoprocessor

public SampleRegionWALCoprocessor()

Method Detail

setTestValues

public void setTestValues(byte[] tableName,
                          byte[] row,
                          byte[] igf,
                          byte[] igq,
                          byte[] chf,
                          byte[] chq,
                          byte[] addf,
                          byte[] addq)

Set values: with a table name, a column name which will be ignored, and a column name which will be added to WAL.

getWALObserver

public Optional<WALObserver> getWALObserver()

Specified by:

getWALObserver in interface WALCoprocessor

getRegionObserver

public Optional<RegionObserver> getRegionObserver()

Specified by:

getRegionObserver in interface RegionCoprocessor

postWALWrite

public void postWALWrite(ObserverContext<? extends WALCoprocessorEnvironment> env,
                         RegionInfo info,
                         WALKey logKey,
                         WALEdit logEdit)
                  throws IOException

Specified by:

postWALWrite in interface WALObserver

Throws:

IOException

preWALWrite

public void preWALWrite(ObserverContext<? extends WALCoprocessorEnvironment> env,
                        RegionInfo info,
                        WALKey logKey,
                        WALEdit logEdit)
                 throws IOException

Specified by:

preWALWrite in interface WALObserver

Throws:

IOException

preWALRestore

public void preWALRestore(ObserverContext<? extends RegionCoprocessorEnvironment> env,
                          RegionInfo info,
                          WALKey logKey,
                          WALEdit logEdit)
                   throws IOException

Triggered before HRegion when WAL is Restoreed.

Specified by:

preWALRestore in interface RegionObserver

Throws:

IOException

preWALRoll

public void preWALRoll(ObserverContext<? extends WALCoprocessorEnvironment> ctx,
                       org.apache.hadoop.fs.Path oldPath,
                       org.apache.hadoop.fs.Path newPath)
                throws IOException

Specified by:

preWALRoll in interface WALObserver

Throws:

IOException

postWALRoll

public void postWALRoll(ObserverContext<? extends WALCoprocessorEnvironment> ctx,
                        org.apache.hadoop.fs.Path oldPath,
                        org.apache.hadoop.fs.Path newPath)
                 throws IOException

Specified by:

postWALRoll in interface WALObserver

Throws:

IOException

postWALRestore

public void postWALRestore(ObserverContext<? extends RegionCoprocessorEnvironment> env,
                           RegionInfo info,
                           WALKey logKey,
                           WALEdit logEdit)
                    throws IOException

Triggered after HRegion when WAL is Restoreed.

Specified by:

postWALRestore in interface RegionObserver

Throws:

IOException

isPreWALWriteCalled

public boolean isPreWALWriteCalled()

isPostWALWriteCalled

public boolean isPostWALWriteCalled()

isPreWALRestoreCalled

public boolean isPreWALRestoreCalled()

isPostWALRestoreCalled

public boolean isPostWALRestoreCalled()

isPreWALRollCalled

public boolean isPreWALRollCalled()

isPostWALRollCalled

public boolean isPostWALRollCalled()