org.apache.hadoop.hbase.master.cleaner

Class BaseHFileCleanerDelegate

java.lang.Object

org.apache.hadoop.hbase.BaseConfigurable

org.apache.hadoop.hbase.master.cleaner.BaseFileCleanerDelegate

org.apache.hadoop.hbase.master.cleaner.BaseHFileCleanerDelegate

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, FileCleanerDelegate, Stoppable

Direct Known Subclasses:

HFileLinkCleaner, LongTermArchivingHFileCleaner, ManualMobMaintHFileCleaner, ReplicationHFileCleaner, SnapshotHFileCleaner, SnapshotScannerHDFSAclCleaner

@InterfaceAudience.Private
public abstract class BaseHFileCleanerDelegate
extends BaseFileCleanerDelegate

Base class for the hfile cleaning function inside the master. By default, only the TimeToLiveHFileCleaner is called.

If other effects are needed, implement your own HFileCleanerDelegate and add it to the configuration "hbase.master.hfilecleaner.plugins", which is a comma-separated list of fully qualified class names. The HFileCleaner will build the cleaner chain in order the order specified by the configuration.

For subclasses, setConf will be called exactly once before using the cleaner.

Since HFileCleanerDelegates are created in HFileCleaner by reflection, classes that implements this interface must provide a default constructor.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	stopped

Constructor Summary

Constructors

Constructor and Description
BaseHFileCleanerDelegate()

Method Summary

Modifier and Type	Method and Description
boolean	isStopped()
void	stop(String why) Stop this service.

Methods inherited from class org.apache.hadoop.hbase.master.cleaner.BaseFileCleanerDelegate

getDeletableFiles, init, isFileDeletable

Methods inherited from class org.apache.hadoop.hbase.BaseConfigurable

getConf, setConf

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.master.cleaner.FileCleanerDelegate

isEmptyDirDeletable, preClean

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

getConf, setConf

Field Detail

stopped

private boolean stopped

Constructor Detail

BaseHFileCleanerDelegate

public BaseHFileCleanerDelegate()

Method Detail

stop

public void stop(String why)

Description copied from interface: Stoppable

Stop this service. Implementers should favor logging errors over throwing RuntimeExceptions.

Parameters:

why - Why we're stopping.

isStopped

public boolean isStopped()

Returns:

True if Stoppable.stop(String) has been closed.