org.apache.hadoop.hbase.master.cleaner

Class BaseFileCleanerDelegate

java.lang.Object

org.apache.hadoop.hbase.BaseConfigurable

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

All Implemented Interfaces:

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

Direct Known Subclasses:

BaseHFileCleanerDelegate, BaseLogCleanerDelegate

@InterfaceAudience.Private
public abstract class BaseFileCleanerDelegate
extends BaseConfigurable
implements FileCleanerDelegate

Base class for file cleaners which allows subclasses to implement a simple isFileDeletable method (which used to be the FileCleanerDelegate contract).

Constructor Summary

Constructors

Constructor and Description
BaseFileCleanerDelegate()

Method Summary

Modifier and Type	Method and 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
protected abstract boolean	isFileDeletable(org.apache.hadoop.fs.FileStatus fStat) Should the master delete the file or keep it?

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

preClean

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

getConf, setConf

Methods inherited from interface org.apache.hadoop.hbase.Stoppable

isStopped, stop

Constructor Detail

BaseFileCleanerDelegate

public BaseFileCleanerDelegate()

Method Detail

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

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

isFileDeletable

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

Should the master delete the file or keep it?

Parameters:

fStat - file status of the file to check

Returns:

true if the file is deletable, false if not