org.apache.hadoop.yarn.server.nodemanager

Class DeletionService

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.yarn.server.nodemanager.DeletionService

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.service.Service

public class DeletionService
extends org.apache.hadoop.service.AbstractService

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DeletionService.FileDeletionTask

Nested classes/interfaces inherited from interface org.apache.hadoop.service.Service

org.apache.hadoop.service.Service.STATE

Constructor Summary

Constructors

Constructor and Description
DeletionService(ContainerExecutor exec)
DeletionService(ContainerExecutor exec, NMStateStoreService stateStore)

Method Summary

Methods

Modifier and Type	Method and Description
DeletionService.FileDeletionTask	createFileDeletionTask(String user, org.apache.hadoop.fs.Path subDir, org.apache.hadoop.fs.Path[] baseDirs) Helper method to create file deletion task.
void	delete(String user, org.apache.hadoop.fs.Path subDir, org.apache.hadoop.fs.Path... baseDirs) Delete the path(s) as this user.
boolean	isTerminated() Determine if the service has completely stopped.
void	scheduleFileDeletionTask(DeletionService.FileDeletionTask fileDeletionTask)
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)
protected void	serviceStop()

Methods inherited from class org.apache.hadoop.service.AbstractService

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, serviceStart, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Constructor Detail

DeletionService

public DeletionService(ContainerExecutor exec)

DeletionService

public DeletionService(ContainerExecutor exec,
               NMStateStoreService stateStore)

Method Detail

delete

public void delete(String user,
          org.apache.hadoop.fs.Path subDir,
          org.apache.hadoop.fs.Path... baseDirs)

Delete the path(s) as this user.

Parameters:

user - The user to delete as, or the JVM user if null

subDir - the sub directory name

baseDirs - the base directories which contains the subDir's

scheduleFileDeletionTask

public void scheduleFileDeletionTask(DeletionService.FileDeletionTask fileDeletionTask)

serviceInit

protected void serviceInit(org.apache.hadoop.conf.Configuration conf)
                    throws Exception

Overrides:

serviceInit in class org.apache.hadoop.service.AbstractService

Throws:

Exception

serviceStop

protected void serviceStop()
                    throws Exception

Overrides:

serviceStop in class org.apache.hadoop.service.AbstractService

Throws:

Exception

isTerminated

@InterfaceAudience.Private
public boolean isTerminated()

Determine if the service has completely stopped. Used only by unit tests

Returns:

true if service has completely stopped

createFileDeletionTask

public DeletionService.FileDeletionTask createFileDeletionTask(String user,
                                                      org.apache.hadoop.fs.Path subDir,
                                                      org.apache.hadoop.fs.Path[] baseDirs)

Helper method to create file deletion task. To be used only if we need a way to define dependencies between deletion tasks.

Parameters:

user - user on whose behalf this task is suppose to run

subDir - sub directory as required in delete(String, Path, Path...)

baseDirs - base directories as required in delete(String, Path, Path...)