org.apache.hadoop.hive.metastore

Interface MetastoreTaskThread

All Superinterfaces:

org.apache.hadoop.conf.Configurable, Runnable

All Known Implementing Classes:

AcidCompactionHistoryService, AcidHouseKeeperService, AcidOpenTxnsCounterService, AcidWriteSetService, DumpDirCleanerTask, EventCleanerTask, MaterializationsRebuildLockCleanerTask, RuntimeStatsCleanerTask

public interface MetastoreTaskThread
extends org.apache.hadoop.conf.Configurable, Runnable

Any task that will run as a separate thread in the metastore should implement this interface.

Method Summary

Modifier and Type	Method and Description
long	runFrequency(TimeUnit unit) Get the frequency at which the thread should be scheduled in the thread pool.

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

getConf, setConf

Methods inherited from interface java.lang.Runnable

run

Method Detail

runFrequency

long runFrequency(TimeUnit unit)

Get the frequency at which the thread should be scheduled in the thread pool. You must call Configurable.setConf(Configuration) before calling this method.

Parameters:

unit - TimeUnit to express the frequency in.

Returns:

frequency