Package org.apache.hadoop.yarn.server.sharedcachemanager

Class CleanerService

java.lang.Object
org.apache.hadoop.service.AbstractService
org.apache.hadoop.service.CompositeService
org.apache.hadoop.yarn.server.sharedcachemanager.CleanerService
All Implemented Interfaces:
Closeable, AutoCloseable, org.apache.hadoop.service.Service
@Private @Evolving public class CleanerService extends org.apache.hadoop.service.CompositeService
The cleaner service that maintains the shared cache area, and cleans up stale entries on a regular basis.

  • Nested Class Summary

    Nested classes/interfaces inherited from class org.apache.hadoop.service.CompositeService

    org.apache.hadoop.service.CompositeService.CompositeServiceShutdownHook

    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 final String
    GLOBAL_CLEANER_PID
    The name of the global cleaner lock that the cleaner creates to indicate that a cleaning process is in progress.

    Fields inherited from class org.apache.hadoop.service.CompositeService

    STOP_ONLY_STARTED_SERVICES

  • Constructor Summary

    Constructors
    Constructor
    Description
    CleanerService(SCMStore store)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    protected void
    runCleanerTask()
    Execute an on-demand cleaner task.
    protected void
    serviceInit(org.apache.hadoop.conf.Configuration conf)
     
    protected void
    serviceStart()
     
    protected void
    serviceStop()
     

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

    addIfService, addService, getServices, removeService

    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 Details

    • GLOBAL_CLEANER_PID

      public static final String GLOBAL_CLEANER_PID
      The name of the global cleaner lock that the cleaner creates to indicate that a cleaning process is in progress.
      See Also:

  • Constructor Details

    • CleanerService

      public CleanerService(SCMStore store)

  • Method Details

    • serviceInit

      protected void serviceInit(org.apache.hadoop.conf.Configuration conf) throws Exception
      Overrides:
      serviceInit in class org.apache.hadoop.service.CompositeService
      Throws:
      Exception

    • serviceStart

      protected void serviceStart() throws Exception
      Overrides:
      serviceStart in class org.apache.hadoop.service.CompositeService
      Throws:
      Exception

    • serviceStop

      protected void serviceStop() throws Exception
      Overrides:
      serviceStop in class org.apache.hadoop.service.CompositeService
      Throws:
      Exception

    • runCleanerTask

      protected void runCleanerTask()
      Execute an on-demand cleaner task.