org.apache.hadoop.hbase.master.snapshot

类 SnapshotHFileCleaner

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.snapshot.SnapshotHFileCleaner

所有已实现的接口:

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

@InterfaceAudience.LimitedPrivate(value="Configuration")
 @InterfaceStability.Evolving
public class SnapshotHFileCleaner
extends BaseHFileCleanerDelegate

Implementation of a file cleaner that checks if a hfile is still used by snapshots of HBase tables.

字段概要

字段

限定符和类型	字段和说明
static String	HFILE_CACHE_REFRESH_PERIOD_CONF_KEY Conf key for the frequency to attempt to refresh the cache of hfiles currently used in snapshots (ms)

构造器概要

构造器

构造器和说明
SnapshotHFileCleaner()

方法概要

限定符和类型	方法和说明
Iterable<org.apache.hadoop.fs.FileStatus>	getDeletableFiles(Iterable<org.apache.hadoop.fs.FileStatus> files) Determines which of the given files are safe to delete
SnapshotFileCache	getFileCacheForTesting() Exposed for Testing!
void	init(Map<String,Object> params) this method is used to pass some instance into subclass
protected boolean	isFileDeletable(org.apache.hadoop.fs.FileStatus fStat) Should the master delete the file or keep it?
boolean	isStopped()
void	setConf(org.apache.hadoop.conf.Configuration conf)
void	stop(String why)

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

getConf

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.hadoop.hbase.master.cleaner.FileCleanerDelegate

preClean

从接口继承的方法 org.apache.hadoop.conf.Configurable

getConf

字段详细资料

HFILE_CACHE_REFRESH_PERIOD_CONF_KEY

public static final String HFILE_CACHE_REFRESH_PERIOD_CONF_KEY

Conf key for the frequency to attempt to refresh the cache of hfiles currently used in snapshots (ms)

另请参阅:

常量字段值

构造器详细资料

SnapshotHFileCleaner

public SnapshotHFileCleaner()

方法详细资料

getDeletableFiles

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

从接口复制的说明: FileCleanerDelegate

Determines which of the given files are safe to delete

指定者:

getDeletableFiles 在接口中 FileCleanerDelegate

覆盖:

getDeletableFiles 在类中 BaseFileCleanerDelegate

参数:

files - files to check for deletion

返回:

files that are ok to delete according to this cleaner

init

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

从接口复制的说明: FileCleanerDelegate

this method is used to pass some instance into subclass

指定者:

init 在接口中 FileCleanerDelegate

覆盖:

init 在类中 BaseFileCleanerDelegate

isFileDeletable

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

从类复制的说明: BaseFileCleanerDelegate

Should the master delete the file or keep it?

指定者:

isFileDeletable 在类中 BaseFileCleanerDelegate

参数:

fStat - file status of the file to check

返回:

true if the file is deletable, false if not

setConf

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

指定者:

setConf 在接口中 org.apache.hadoop.conf.Configurable

覆盖:

setConf 在类中 BaseConfigurable

stop

public void stop(String why)

指定者:

stop 在接口中 Stoppable

覆盖:

stop 在类中 BaseHFileCleanerDelegate

isStopped

public boolean isStopped()

指定者:

isStopped 在接口中 Stoppable

覆盖:

isStopped 在类中 BaseHFileCleanerDelegate

getFileCacheForTesting

public SnapshotFileCache getFileCacheForTesting()

Exposed for Testing!

返回:

the cache of all hfiles