org.apache.hadoop.hive.ql.txn.compactor

Class MetaStoreCompactorThread

java.lang.Object

java.lang.Thread

org.apache.hadoop.hive.ql.txn.compactor.CompactorThread

org.apache.hadoop.hive.ql.txn.compactor.MetaStoreCompactorThread

All Implemented Interfaces:

Runnable, org.apache.hadoop.conf.Configurable, MetaStoreThread

Direct Known Subclasses:

Cleaner, InitiatorBase

public abstract class MetaStoreCompactorThread
extends CompactorThread
implements MetaStoreThread

Compactor threads that runs in the metastore. It uses a TxnStore to access the internal database.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
protected ScheduledExecutorService	cycleUpdaterExecutorService
protected MetadataCache	metadataCache
protected TxnStore	txnHandler

Fields inherited from class org.apache.hadoop.hive.ql.txn.compactor.CompactorThread

checkInterval, conf, hostName, LOG, runtimeVersion, stop

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
MetaStoreCompactorThread()

Method Summary

Modifier and Type	Method and Description
void	init(AtomicBoolean stop)
protected abstract boolean	isCacheEnabled()
protected org.apache.hadoop.hive.metastore.api.Partition	resolvePartition(CompactionInfo ci) Get the partition being compacted.
protected void	startCycleUpdater(long updateInterval, Runnable taskToRun)
protected void	stopCycleUpdater()
protected static long	updateCycleDurationMetric(String metric, long startedAt)

Methods inherited from class org.apache.hadoop.hive.ql.txn.compactor.CompactorThread

doPostLoopActions, getConf, getRuntimeVersion, initializeAndStartThread, replIsCompactionDisabledForTable, setConf, tableName

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, run, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hive.metastore.MetaStoreThread

start

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Field Detail

txnHandler

protected TxnStore txnHandler

cycleUpdaterExecutorService

protected ScheduledExecutorService cycleUpdaterExecutorService

metadataCache

protected MetadataCache metadataCache

Constructor Detail

MetaStoreCompactorThread

public MetaStoreCompactorThread()

Method Detail

init

public void init(AtomicBoolean stop)
          throws Exception

Specified by:

init in interface MetaStoreThread

Overrides:

init in class CompactorThread

Throws:

Exception

resolvePartition

protected org.apache.hadoop.hive.metastore.api.Partition resolvePartition(CompactionInfo ci)
                                                                   throws org.apache.hadoop.hive.metastore.api.MetaException

Description copied from class: CompactorThread

Get the partition being compacted.

Specified by:

resolvePartition in class CompactorThread

Parameters:

ci - compaction info returned from the compaction queue

Returns:

metastore partition, or null if there is not partition in this compaction info

Throws:

org.apache.hadoop.hive.metastore.api.MetaException - if underlying calls throw, or if the partition name resolves to more than one partition.

isCacheEnabled

protected abstract boolean isCacheEnabled()

startCycleUpdater

protected void startCycleUpdater(long updateInterval,
                                 Runnable taskToRun)

stopCycleUpdater

protected void stopCycleUpdater()

updateCycleDurationMetric

protected static long updateCycleDurationMetric(String metric,
                                                long startedAt)