org.apache.hadoop.hbase.master

类 CatalogJanitor

java.lang.Object

org.apache.hadoop.hbase.ScheduledChore

org.apache.hadoop.hbase.master.CatalogJanitor

所有已实现的接口:

Runnable

@InterfaceAudience.Private
public class CatalogJanitor
extends ScheduledChore

A janitor for the catalog tables. Scans the hbase:meta catalog table on a period looking for unused regions to garbage collect.

方法概要

限定符和类型	方法和说明
protected void	chore()
boolean	cleanMergeQualifier(RegionInfo region) Checks if the specified region has merge qualifiers, if so, try to clean them
protected boolean	initialChore()
boolean	setEnabled(boolean enabled)

从类继承的方法 org.apache.hadoop.hbase.ScheduledChore

cancel, cancel, choreForTesting, cleanup, getInitialDelay, getName, getPeriod, getStopper, getTimeUnit, isInitialChoreComplete, isScheduled, run, toString, triggerNow

从类继承的方法 java.lang.Object

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

方法详细资料

initialChore

protected boolean initialChore()

覆盖:

initialChore 在类中 ScheduledChore

setEnabled

public boolean setEnabled(boolean enabled)

参数:

enabled -

chore

protected void chore()

指定者:

chore 在类中 ScheduledChore

cleanMergeQualifier

public boolean cleanMergeQualifier(RegionInfo region)
                            throws IOException

Checks if the specified region has merge qualifiers, if so, try to clean them

参数:

region -

返回:

true if the specified region doesn't have merge qualifier now

抛出:

IOException