public class DeletionService extends AbstractService
Modifier and Type | Class and Description |
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static class |
DeletionService.FileDeletionTask |
Service.STATE
Constructor and Description |
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DeletionService(ContainerExecutor exec) |
Modifier and Type | Method and Description |
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DeletionService.FileDeletionTask |
createFileDeletionTask(String user,
Path subDir,
Path[] baseDirs)
Helper method to create file deletion task.
|
void |
delete(String user,
Path subDir,
Path... baseDirs)
/**
Delete the path(s) as this user.
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boolean |
isTerminated()
Determine if the service has completely stopped.
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void |
scheduleFileDeletionTask(DeletionService.FileDeletionTask fileDeletionTask) |
protected void |
serviceInit(Configuration conf)
All initialization code needed by a service.
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protected void |
serviceStop()
Actions called during the transition to the STOPPED state.
|
close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, serviceStart, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop
public DeletionService(ContainerExecutor exec)
public void delete(String user, Path subDir, Path... baseDirs)
user
- The user to delete as, or the JVM user if nullsubDir
- the sub directory namebaseDirs
- the base directories which contains the subDir'spublic void scheduleFileDeletionTask(DeletionService.FileDeletionTask fileDeletionTask)
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 AbstractService
conf
- configurationException
- on a failure -these will be caught,
possibly wrapped, and wil; 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 AbstractService
Exception
- if needed -these will be caught and logged.@InterfaceAudience.Private public boolean isTerminated()
public DeletionService.FileDeletionTask createFileDeletionTask(String user, Path subDir, Path[] baseDirs)
user
- user on whose behalf this task is suppose to runsubDir
- sub directory as required in
delete(String, Path, Path...)
baseDirs
- base directories as required in
delete(String, Path, Path...)
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