Package org.apache.flink.runtime.resourcemanager

Interface JobLeaderIdService

  • All Known Implementing Classes:
    DefaultJobLeaderIdService
    public interface JobLeaderIdService
    Service which retrieves for a registered job the current job leader id (the leader id of the job manager responsible for the job). The leader id will be exposed as a future via the getLeaderId(JobID). The future will only be completed with an exception in case the service will be stopped.

    • Method Detail

      • start

        void start​(JobLeaderIdActions initialJobLeaderIdActions)
    throws Exception
        Start the service with the given job leader actions.
        Parameters:
        initialJobLeaderIdActions - to use for job leader id actions
        Throws:
        Exception - which is thrown when clearing up old state

      • stop

        void stop()
   throws Exception
        Stop the service.
        Throws:
        Exception - which is thrown in case a retrieval service cannot be stopped properly

      • clear

        void clear()
    throws Exception
        Stop and clear the currently registered job leader id listeners.
        Throws:
        Exception - which is thrown in case a retrieval service cannot be stopped properly

      • addJob

        void addJob​(JobID jobId)
     throws Exception
        Add a job to be monitored to retrieve the job leader id.
        Parameters:
        jobId - identifying the job to monitor
        Throws:
        Exception - if the job could not be added to the service

      • removeJob

        void removeJob​(JobID jobId)
        throws Exception
        Remove the given job from being monitored by the service.
        Parameters:
        jobId - identifying the job to remove from monitor
        Throws:
        Exception - if removing the job fails

      • containsJob

        boolean containsJob​(JobID jobId)
        Check whether the given job is being monitored or not.
        Parameters:
        jobId - identifying the job
        Returns:
        True if the job is being monitored; otherwise false

      • isValidTimeout

        boolean isValidTimeout​(JobID jobId,
                       UUID timeoutId)
        Checks whether the given timeoutId for the given jobId is valid or not.
        Parameters:
        jobId - jobId identifying the job for which the timeout should be checked
        timeoutId - timeoutId specifying the timeout which should be checked for its validity
        Returns:
        true if the timeout is valid; otherwise false