org.apache.omid.transaction

Class OmidCompactor

java.lang.Object

org.apache.hadoop.hbase.coprocessor.BaseRegionObserver

org.apache.omid.transaction.OmidCompactor

All Implemented Interfaces:

org.apache.hadoop.hbase.Coprocessor, RegionCoprocessor, RegionObserver

public class OmidCompactor
extends BaseRegionObserver

Garbage collector for stale data: triggered upon HBase compactions, it removes data from uncommitted transactions older than the low watermark using a special scanner

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

org.apache.hadoop.hbase.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
OmidCompactor()
OmidCompactor(boolean enableCompactorForAllFamilies)

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.hbase.regionserver.InternalScanner	preCompact(ObserverContext<RegionCoprocessorEnvironment> env, org.apache.hadoop.hbase.regionserver.Store store, org.apache.hadoop.hbase.regionserver.InternalScanner scanner, org.apache.hadoop.hbase.regionserver.ScanType scanType, org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest request)
void	start(org.apache.hadoop.hbase.CoprocessorEnvironment env)
void	stop(org.apache.hadoop.hbase.CoprocessorEnvironment e)

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

getRegionObserver, preCompact

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.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, postWALRestore, preAppend, preAppendAfterRowLock, preBatchMutate, preBulkLoadHFile, preCheckAndDelete, preCheckAndDeleteAfterRowLock, preCheckAndPut, preCheckAndPutAfterRowLock, preClose, preCommitStoreFile, preCompactScannerOpen, preCompactSelection, preDelete, preExists, preFlush, preFlush, preFlushScannerOpen, preGetOp, preIncrement, preIncrementAfterRowLock, preMemStoreCompaction, preMemStoreCompactionCompact, preMemStoreCompactionCompactScannerOpen, preOpen, prePrepareTimeStampForDeleteVersion, prePut, preReplayWALs, preScannerClose, preScannerNext, preScannerOpen, preStoreFileReaderOpen, preStoreScannerOpen, preWALRestore

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

getBulkLoadObserver, getEndpointObserver

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

getServices

Constructor Detail

OmidCompactor

public OmidCompactor()

OmidCompactor

public OmidCompactor(boolean enableCompactorForAllFamilies)

Method Detail

start

public void start(org.apache.hadoop.hbase.CoprocessorEnvironment env)
           throws IOException

Throws:

IOException

stop

public void stop(org.apache.hadoop.hbase.CoprocessorEnvironment e)
          throws IOException

Throws:

IOException

preCompact

public org.apache.hadoop.hbase.regionserver.InternalScanner preCompact(ObserverContext<RegionCoprocessorEnvironment> env,
                                                                       org.apache.hadoop.hbase.regionserver.Store store,
                                                                       org.apache.hadoop.hbase.regionserver.InternalScanner scanner,
                                                                       org.apache.hadoop.hbase.regionserver.ScanType scanType,
                                                                       org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest request)
                                                                throws IOException

Overrides:

preCompact in class BaseRegionObserver

Throws:

IOException