Package org.apache.hadoop.service

@Public package org.apache.hadoop.service
Support for services.
  • Class
    Description
    AbstractService
    This is the base implementation class for services.
    CompositeService
    Composition of services.
    org.apache.hadoop.service.CompositeService.CompositeServiceShutdownHook
    JVM Shutdown hook for CompositeService which will stop the give CompositeService gracefully in case of JVM shutdown.
    LifecycleEvent
    A serializable lifecycle event: the time a state transition occurred, and what state was entered.
    LoggingStateChangeListener
    This is a state change listener that logs events at INFO level
    Service
    Service LifeCycle.
    Service.STATE
    Service states
    ServiceOperations
    This class contains a set of methods to work with services, especially to walk them through their lifecycle.
    org.apache.hadoop.service.ServiceOperations.ServiceListeners
    Class to manage a list of ServiceStateChangeListener instances, including a notification loop that is robust against changes to the list during the notification process.
    ServiceStateChangeListener
    Interface to notify state changes of a service.
    ServiceStateException
    Exception that can be raised on state change operations, whose exit code can be explicitly set, determined from that of any nested cause, or a default value of LauncherExitCodes.EXIT_SERVICE_LIFECYCLE_EXCEPTION.
    ServiceStateModel
    Implements the service state model.