Package org.apache.hadoop.yarn.server.timeline.recovery

Class LeveldbTimelineStateStore

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.yarn.server.timeline.recovery.TimelineStateStore

org.apache.hadoop.yarn.server.timeline.recovery.LeveldbTimelineStateStore

All Implemented Interfaces:

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

public class LeveldbTimelineStateStore
extends TimelineStateStore

A timeline service state storage implementation that supports any persistent storage that adheres to the LevelDB interface.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.yarn.server.timeline.recovery.TimelineStateStore

TimelineStateStore.TimelineServiceState

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
static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor	Description
LeveldbTimelineStateStore()

Method Summary

Modifier and Type	Method	Description
protected void	closeStorage()	Implementation-specific shutdown.
protected void	initStorage(org.apache.hadoop.conf.Configuration conf)	Implementation-specific initialization.
TimelineStateStore.TimelineServiceState	loadState()	Load the timeline service state from the state storage.
void	removeToken(org.apache.hadoop.yarn.security.client.TimelineDelegationTokenIdentifier tokenId)	Blocking method to remove a delegation token from the state storage.
void	removeTokenMasterKey(org.apache.hadoop.security.token.delegation.DelegationKey key)	Blocking method to remove a delegation token master key.
protected void	startStorage()	Implementation-specific startup.
void	storeToken(org.apache.hadoop.yarn.security.client.TimelineDelegationTokenIdentifier tokenId, java.lang.Long renewDate)	Blocking method to store a delegation token along with the current token sequence number to the state storage.
void	storeTokenMasterKey(org.apache.hadoop.security.token.delegation.DelegationKey key)	Blocking method to store a delegation token master key.
void	updateToken(org.apache.hadoop.yarn.security.client.TimelineDelegationTokenIdentifier tokenId, java.lang.Long renewDate)	Blocking method to update the expiration of a delegation token in the state storage.

Methods inherited from class org.apache.hadoop.yarn.server.timeline.recovery.TimelineStateStore

serviceInit, serviceStart, 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, 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

LOG

public static final org.slf4j.Logger LOG

Constructor Detail

LeveldbTimelineStateStore

public LeveldbTimelineStateStore()

Method Detail

initStorage

protected void initStorage(org.apache.hadoop.conf.Configuration conf)
                    throws java.io.IOException

Description copied from class: TimelineStateStore

Implementation-specific initialization.

Specified by:

initStorage in class TimelineStateStore

Parameters:

conf - the configuration

Throws:

java.io.IOException

startStorage

protected void startStorage()
                     throws java.io.IOException

Description copied from class: TimelineStateStore

Implementation-specific startup.

Specified by:

startStorage in class TimelineStateStore

Throws:

java.io.IOException

closeStorage

protected void closeStorage()
                     throws java.io.IOException

Description copied from class: TimelineStateStore

Implementation-specific shutdown.

Specified by:

closeStorage in class TimelineStateStore

Throws:

java.io.IOException

loadState

public TimelineStateStore.TimelineServiceState loadState()
                                                  throws java.io.IOException

Description copied from class: TimelineStateStore

Load the timeline service state from the state storage.

Specified by:

loadState in class TimelineStateStore

Throws:

java.io.IOException

storeToken

public void storeToken(org.apache.hadoop.yarn.security.client.TimelineDelegationTokenIdentifier tokenId,
                       java.lang.Long renewDate)
                throws java.io.IOException

Description copied from class: TimelineStateStore

Blocking method to store a delegation token along with the current token sequence number to the state storage. Implementations must not return from this method until the token has been committed to the state store.

Specified by:

storeToken in class TimelineStateStore

Parameters:

tokenId - the token to store

renewDate - the token renewal deadline

Throws:

java.io.IOException

updateToken

public void updateToken(org.apache.hadoop.yarn.security.client.TimelineDelegationTokenIdentifier tokenId,
                        java.lang.Long renewDate)
                 throws java.io.IOException

Description copied from class: TimelineStateStore

Blocking method to update the expiration of a delegation token in the state storage. Implementations must not return from this method until the expiration date of the token has been updated in the state store.

Specified by:

updateToken in class TimelineStateStore

Parameters:

tokenId - the token to update

renewDate - the new token renewal deadline

Throws:

java.io.IOException

removeToken

public void removeToken(org.apache.hadoop.yarn.security.client.TimelineDelegationTokenIdentifier tokenId)
                 throws java.io.IOException

Description copied from class: TimelineStateStore

Blocking method to remove a delegation token from the state storage. Implementations must not return from this method until the token has been removed from the state store.

Specified by:

removeToken in class TimelineStateStore

Parameters:

tokenId - the token to remove

Throws:

java.io.IOException

storeTokenMasterKey

public void storeTokenMasterKey(org.apache.hadoop.security.token.delegation.DelegationKey key)
                         throws java.io.IOException

Description copied from class: TimelineStateStore

Blocking method to store a delegation token master key. Implementations must not return from this method until the key has been committed to the state store.

Specified by:

storeTokenMasterKey in class TimelineStateStore

Parameters:

key - the master key to store

Throws:

java.io.IOException

removeTokenMasterKey

public void removeTokenMasterKey(org.apache.hadoop.security.token.delegation.DelegationKey key)
                          throws java.io.IOException

Description copied from class: TimelineStateStore

Blocking method to remove a delegation token master key. Implementations must not return from this method until the key has been removed from the state store.

Specified by:

removeTokenMasterKey in class TimelineStateStore

Parameters:

key - the master key to remove

Throws:

java.io.IOException