public class JobHistoryServer extends CompositeService
JobHistoryServer
is responsible for servicing all job history
related requests from client.CompositeService.CompositeServiceShutdownHook
Service.STATE
Modifier and Type | Field and Description |
---|---|
static long |
historyServerTimeStamp |
static int |
SHUTDOWN_HOOK_PRIORITY
Priority of the JobHistoryServer shutdown hook.
|
STOP_ONLY_STARTED_SERVICES
Constructor and Description |
---|
JobHistoryServer() |
Modifier and Type | Method and Description |
---|---|
protected JHSDelegationTokenSecretManager |
createJHSSecretManager(Configuration conf) |
protected void |
doSecureLogin(Configuration conf) |
HistoryClientService |
getClientService() |
static void |
main(String[] args) |
protected void |
serviceInit(Configuration conf)
All initialization code needed by a service.
|
protected void |
serviceStart()
Actions called during the INITED to STARTED transition.
|
protected void |
serviceStop()
Actions called during the transition to the STOPPED state.
|
addIfService, addService, getServices, removeService
close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop
public static final int SHUTDOWN_HOOK_PRIORITY
public static final long historyServerTimeStamp
protected void serviceInit(Configuration conf) throws Exception
AbstractService
AbstractService.init(Configuration)
prevents re-entrancy.
The base implementation checks to see if the subclass has created
a new configuration instance, and if so, updates the base class valueserviceInit
in class CompositeService
conf
- configurationException
- on a failure -these will be caught,
possibly wrapped, and wil; trigger a service stopprotected JHSDelegationTokenSecretManager createJHSSecretManager(Configuration conf)
protected void doSecureLogin(Configuration conf) throws IOException
IOException
protected void serviceStart() throws Exception
AbstractService
AbstractService.start()
prevents re-entrancy.serviceStart
in class CompositeService
Exception
- if needed -these will be caught,
wrapped, and trigger a service stopprotected void serviceStop() throws Exception
AbstractService
AbstractService.stop()
prevents re-entrancy.
Implementations MUST write this to be robust against failures, including
checks for null references -and for the first failure to not stop other
attempts to shut down parts of the service.serviceStop
in class CompositeService
Exception
- if needed -these will be caught and logged.@InterfaceAudience.Private public HistoryClientService getClientService()
public static void main(String[] args)
Copyright © 2013 Apache Software Foundation. All rights reserved.