Package org.apache.hadoop.hbase.replication.master

Class ReplicationLogCleaner

java.lang.Object

org.apache.hadoop.hbase.BaseConfigurable

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

org.apache.hadoop.hbase.master.cleaner.BaseLogCleanerDelegate

org.apache.hadoop.hbase.replication.master.ReplicationLogCleaner

All Implemented Interfaces:

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

@LimitedPrivate("Configuration")
public class ReplicationLogCleaner
extends BaseLogCleanerDelegate

Implementation of a log cleaner that checks if a log is still scheduled for replication before deleting it when its TTL is over.

Field Summary

Fields

Modifier and Type	Field	Description
private static final org.slf4j.Logger	LOG
private ReplicationQueueStorage	queueStorage
private long	readZKTimestamp
private boolean	shareZK
private boolean	stopped
private Set<String>	wals
private ZKWatcher	zkw

Constructor Summary

Constructors

Constructor	Description
ReplicationLogCleaner()

Method Summary

Modifier and Type	Method	Description
Iterable<org.apache.hadoop.fs.FileStatus>	getDeletableFiles(Iterable<org.apache.hadoop.fs.FileStatus> files)	Determines which of the given files are safe to delete
void	init(Map<String,Object> params)	this method is used to pass some instance into subclass
boolean	isStopped()	Returns True if Stoppable.stop(String) has been closed.
void	postClean()	Used to do some cleanup work
void	preClean()	Used to do some initialize work before every period clean
void	setConf(org.apache.hadoop.conf.Configuration conf, ZKWatcher zk)
void	stop(String why)	Stop this service.

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

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.conf.Configurable

getConf, setConf

Methods inherited from interface org.apache.hadoop.hbase.master.cleaner.FileCleanerDelegate

isEmptyDirDeletable

Field Details

LOG

private static final org.slf4j.Logger LOG

zkw

private ZKWatcher zkw

shareZK

private boolean shareZK

queueStorage

private ReplicationQueueStorage queueStorage

stopped

private boolean stopped

wals

private Set<String> wals

readZKTimestamp

private long readZKTimestamp

Constructor Details

ReplicationLogCleaner

public ReplicationLogCleaner()

Method Details

preClean

public void preClean()

Description copied from interface: FileCleanerDelegate

Used to do some initialize work before every period clean

postClean

public void postClean()

Description copied from interface: FileCleanerDelegate

Used to do some cleanup work

getDeletableFiles

public Iterable<org.apache.hadoop.fs.FileStatus> getDeletableFiles(Iterable<org.apache.hadoop.fs.FileStatus> files)

Description copied from interface: FileCleanerDelegate

Determines which of the given files are safe to delete

Specified by:

getDeletableFiles in interface FileCleanerDelegate

Overrides:

getDeletableFiles in class BaseFileCleanerDelegate

Parameters:

files - files to check for deletion

Returns:

files that are ok to delete according to this cleaner

init

public void init(Map<String,Object> params)

Description copied from interface: FileCleanerDelegate

this method is used to pass some instance into subclass

Specified by:

init in interface FileCleanerDelegate

Overrides:

init in class BaseFileCleanerDelegate

setConf

@Private
public void setConf(org.apache.hadoop.conf.Configuration conf,
 ZKWatcher zk)

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()

Description copied from interface: Stoppable

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