org.apache.hadoop.hbase.master.cleaner

Class HFileLinkCleaner

java.lang.Object

org.apache.hadoop.hbase.BaseConfigurable

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

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

org.apache.hadoop.hbase.master.cleaner.HFileLinkCleaner

All Implemented Interfaces:

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

@InterfaceAudience.LimitedPrivate(value="Configuration")
public class HFileLinkCleaner
extends BaseHFileCleanerDelegate

HFileLink cleaner that determines if a hfile should be deleted. HFiles can be deleted only if there're no links to them. When a HFileLink is created a back reference file is created in: /hbase/archive/table/region/cf/.links-hfile/ref-region.ref-table To check if the hfile can be deleted the back references folder must be empty.

Field Summary

Fields

Modifier and Type	Field and Description
private org.apache.hadoop.fs.FileSystem	fs
private ReentrantReadWriteLock	lock
private static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor and Description
HFileLinkCleaner()

Method Summary

Modifier and Type	Method and Description
boolean	isFileDeletable(org.apache.hadoop.fs.FileStatus fStat) Should the master delete the file or keep it?
void	setConf(org.apache.hadoop.conf.Configuration conf)

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

isStopped, stop

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

getDeletableFiles, init

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

getConf

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

Field Detail

LOG

private static final org.slf4j.Logger LOG

fs

private org.apache.hadoop.fs.FileSystem fs

lock

private ReentrantReadWriteLock lock

Constructor Detail

HFileLinkCleaner

public HFileLinkCleaner()

Method Detail

isFileDeletable

public boolean isFileDeletable(org.apache.hadoop.fs.FileStatus fStat)

Description copied from class: BaseFileCleanerDelegate

Should the master delete the file or keep it?

Specified by:

isFileDeletable in class BaseFileCleanerDelegate

Parameters:

fStat - file status of the file to check

Returns:

true if the file is deletable, false if not

setConf

public void setConf(org.apache.hadoop.conf.Configuration conf)

Specified by:

setConf in interface org.apache.hadoop.conf.Configurable

Overrides:

setConf in class BaseConfigurable