Package org.apache.hadoop.yarn.server.volume

Class VolumeManager

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.yarn.server.api.ConfigurableAuxiliaryService

org.apache.hadoop.yarn.server.volume.VolumeManager

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.service.Service

public abstract class VolumeManager
extends org.apache.hadoop.yarn.server.api.ConfigurableAuxiliaryService

Nested Class Summary

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

org.apache.hadoop.service.Service.STATE

Field Summary

Fields

Modifier and Type	Field	Description
protected org.apache.hadoop.fs.FileSystem	fs
static java.lang.String	HS_VOLUME_NAME
protected org.slf4j.Logger	LOG
protected java.lang.String	mountPath
protected boolean	newVolumePathSupportEnabled
static java.lang.String	RM_VOLUME_NAME
static java.lang.String	VOLUME_MOUNTED
static java.lang.String	VOLUME_NAME
static java.lang.String	VOLUME_PATH
protected java.lang.String	volumeLogfilePath
protected java.lang.String	volumeMode
protected org.apache.hadoop.fs.Path	yarnDir

Constructor Summary

Constructors

Constructor	Description
VolumeManager(java.lang.String name)

Method Summary

Modifier and Type	Method	Description
protected void	copyOwnerAndPermission(org.apache.hadoop.fs.FileStatus srcStatus, org.apache.hadoop.fs.Path dst)
protected void	copyPermissionsIfNeeded(org.apache.hadoop.fs.FileStatus srcStatus, org.apache.hadoop.fs.Path dst)
protected void	createDir(java.lang.String pathName, org.apache.hadoop.fs.permission.FsPermission perm)
protected void	createVolume(java.lang.String volumeNumber)
abstract void	createVolumes(org.apache.hadoop.conf.Configuration conf)
protected java.util.Map<java.lang.String,java.lang.String>	getVolumeInfo(java.lang.String volumeName)
protected boolean	isVolumeMounted(java.lang.String volumeName)
protected void	lockVolume(java.lang.String volumeName)
protected void	mountVolume(java.lang.String volumeName, java.lang.String volumeMountPath)
void	serviceInit(org.apache.hadoop.conf.Configuration conf)
protected void	unlockVolume(java.lang.String volumeName)
protected void	unmountVolume(java.lang.String volumeName)
protected void	verifyYarnDirPermissions(org.apache.hadoop.fs.Path yarnDir)
protected void	waitForLockRelease(org.apache.hadoop.fs.Path lockFile)
protected void	waitForYarnPathCreated()

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, serviceStop, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Field Detail

VOLUME_NAME

public static final java.lang.String VOLUME_NAME

See Also:

Constant Field Values

VOLUME_PATH

public static final java.lang.String VOLUME_PATH

See Also:

Constant Field Values

VOLUME_MOUNTED

public static final java.lang.String VOLUME_MOUNTED

See Also:

Constant Field Values

HS_VOLUME_NAME

public static final java.lang.String HS_VOLUME_NAME

See Also:

Constant Field Values

RM_VOLUME_NAME

public static final java.lang.String RM_VOLUME_NAME

See Also:

Constant Field Values

LOG

protected org.slf4j.Logger LOG

volumeLogfilePath

protected java.lang.String volumeLogfilePath

volumeMode

protected java.lang.String volumeMode

mountPath

protected java.lang.String mountPath

yarnDir

protected org.apache.hadoop.fs.Path yarnDir

newVolumePathSupportEnabled

protected boolean newVolumePathSupportEnabled

fs

protected org.apache.hadoop.fs.FileSystem fs

Constructor Detail

VolumeManager

public VolumeManager(java.lang.String name)

Method Detail

serviceInit

public void serviceInit(org.apache.hadoop.conf.Configuration conf)
                 throws java.lang.Exception

Overrides:

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

Throws:

java.lang.Exception

createVolumes

public abstract void createVolumes(org.apache.hadoop.conf.Configuration conf)
                            throws java.lang.Exception

Throws:

java.lang.Exception

createVolume

protected void createVolume(java.lang.String volumeNumber)
                     throws java.lang.Exception

Throws:

java.lang.Exception

waitForYarnPathCreated

protected void waitForYarnPathCreated()
                               throws java.lang.Exception

Throws:

java.lang.Exception

createDir

protected void createDir(java.lang.String pathName,
                         org.apache.hadoop.fs.permission.FsPermission perm)
                  throws java.io.IOException

Throws:

java.io.IOException

verifyYarnDirPermissions

protected void verifyYarnDirPermissions(org.apache.hadoop.fs.Path yarnDir)
                                 throws java.lang.Exception

Throws:

java.lang.Exception

copyPermissionsIfNeeded

protected void copyPermissionsIfNeeded(org.apache.hadoop.fs.FileStatus srcStatus,
                                       org.apache.hadoop.fs.Path dst)
                                throws java.lang.Exception

Throws:

java.lang.Exception

copyOwnerAndPermission

protected void copyOwnerAndPermission(org.apache.hadoop.fs.FileStatus srcStatus,
                                      org.apache.hadoop.fs.Path dst)
                               throws java.lang.Exception

Throws:

java.lang.Exception

getVolumeInfo

protected java.util.Map<java.lang.String,java.lang.String> getVolumeInfo(java.lang.String volumeName)
                                                                        throws java.io.IOException

Throws:

java.io.IOException

isVolumeMounted

protected boolean isVolumeMounted(java.lang.String volumeName)
                           throws java.io.IOException

Throws:

java.io.IOException

mountVolume

protected void mountVolume(java.lang.String volumeName,
                           java.lang.String volumeMountPath)
                    throws java.io.IOException

Throws:

java.io.IOException

unmountVolume

protected void unmountVolume(java.lang.String volumeName)
                      throws java.io.IOException

Throws:

java.io.IOException

lockVolume

protected void lockVolume(java.lang.String volumeName)
                   throws java.lang.Exception

Throws:

java.lang.Exception

unlockVolume

protected void unlockVolume(java.lang.String volumeName)
                     throws java.io.IOException

Throws:

java.io.IOException

waitForLockRelease

protected void waitForLockRelease(org.apache.hadoop.fs.Path lockFile)
                           throws java.lang.Exception

Throws:

java.lang.Exception