Package org.apache.flink.client.program

Interface ClusterClient<T>

    • Method Detail

      • getClusterId

        T getClusterId()
        Returns the cluster id identifying the cluster to which the client is connected.
        Returns:
        cluster id of the connected cluster

      • getFlinkConfiguration

        org.apache.flink.configuration.Configuration getFlinkConfiguration()
        Return the Flink configuration object.
        Returns:
        The Flink configuration object

      • shutDownCluster

        void shutDownCluster()
        Shut down the cluster that this client communicate with.

      • getWebInterfaceURL

        String getWebInterfaceURL()
        Returns an URL (as a string) to the cluster web interface.

      • listJobs

        CompletableFuture<Collection<org.apache.flink.runtime.client.JobStatusMessage>> listJobs()
                                                                                  throws Exception
        Lists the currently running and finished jobs on the cluster.
        Returns:
        future collection of running and finished jobs
        Throws:
        Exception - if no connection to the cluster could be established

      • disposeSavepoint

        CompletableFuture<org.apache.flink.runtime.messages.Acknowledge> disposeSavepoint​(String savepointPath)
                                                                           throws org.apache.flink.util.FlinkException
        Dispose the savepoint under the given path.
        Parameters:
        savepointPath - path to the savepoint to be disposed
        Returns:
        acknowledge future of the dispose action
        Throws:
        org.apache.flink.util.FlinkException

      • submitJob

        CompletableFuture<org.apache.flink.api.common.JobID> submitJob​(org.apache.flink.runtime.jobgraph.JobGraph jobGraph)
        Submit the given JobGraph to the cluster.
        Parameters:
        jobGraph - to submit
        Returns:
        JobID of the submitted job

      • getJobStatus

        CompletableFuture<org.apache.flink.api.common.JobStatus> getJobStatus​(org.apache.flink.api.common.JobID jobId)
        Requests the JobStatus of the job with the given JobID.

      • requestJobResult

        CompletableFuture<org.apache.flink.runtime.jobmaster.JobResult> requestJobResult​(org.apache.flink.api.common.JobID jobId)
        Request the JobResult for the given JobID.
        Parameters:
        jobId - for which to request the JobResult
        Returns:
        Future which is completed with the JobResult

      • getAccumulators

        default CompletableFuture<Map<String,​Object>> getAccumulators​(org.apache.flink.api.common.JobID jobID)
        Requests and returns the accumulators for the given job identifier. Accumulators can be requested while a is running or after it has finished. The default class loader is used to deserialize the incoming accumulator results.
        Parameters:
        jobID - The job identifier of a job.
        Returns:
        A Map containing the accumulator's name and its value.

      • getAccumulators

        CompletableFuture<Map<String,​Object>> getAccumulators​(org.apache.flink.api.common.JobID jobID,
                                                            ClassLoader loader)
        Requests and returns the accumulators for the given job identifier. Accumulators can be requested while a is running or after it has finished.
        Parameters:
        jobID - The job identifier of a job.
        loader - The class loader for deserializing the accumulator results.
        Returns:
        A Map containing the accumulator's name and its value.

      • cancel

        CompletableFuture<org.apache.flink.runtime.messages.Acknowledge> cancel​(org.apache.flink.api.common.JobID jobId)
        Cancels a job identified by the job id.
        Parameters:
        jobId - the job id

      • cancelWithSavepoint

        CompletableFuture<String> cancelWithSavepoint​(org.apache.flink.api.common.JobID jobId,
                                              @Nullable
                                              String savepointDirectory,
                                              org.apache.flink.core.execution.SavepointFormatType formatType)
        Cancels a job identified by the job id and triggers a savepoint.
        Parameters:
        jobId - the job id
        savepointDirectory - directory the savepoint should be written to
        formatType - a binary format of the savepoint
        Returns:
        future of path where the savepoint is located

      • stopWithSavepoint

        CompletableFuture<String> stopWithSavepoint​(org.apache.flink.api.common.JobID jobId,
                                            boolean advanceToEndOfEventTime,
                                            @Nullable
                                            String savepointDirectory,
                                            org.apache.flink.core.execution.SavepointFormatType formatType)
        Stops a program on Flink cluster whose job-manager is configured in this client's configuration. Stopping works only for streaming programs. Be aware, that the program might continue to run for a while after sending the stop command, because after sources stopped to emit data all operators need to finish processing.
        Parameters:
        jobId - the job ID of the streaming program to stop
        advanceToEndOfEventTime - flag indicating if the source should inject a MAX_WATERMARK in the pipeline
        savepointDirectory - directory the savepoint should be written to
        formatType - a binary format of the savepoint
        Returns:
        a CompletableFuture containing the path where the savepoint is located

      • triggerSavepoint

        CompletableFuture<String> triggerSavepoint​(org.apache.flink.api.common.JobID jobId,
                                           @Nullable
                                           String savepointDirectory,
                                           org.apache.flink.core.execution.SavepointFormatType formatType)
        Triggers a savepoint for the job identified by the job id. The savepoint will be written to the given savepoint directory, or CheckpointingOptions.SAVEPOINT_DIRECTORY if it is null.
        Parameters:
        jobId - job id
        savepointDirectory - directory the savepoint should be written to
        formatType - a binary format of the savepoint
        Returns:
        path future where the savepoint is located

      • sendCoordinationRequest

        CompletableFuture<org.apache.flink.runtime.operators.coordination.CoordinationResponse> sendCoordinationRequest​(org.apache.flink.api.common.JobID jobId,
                                                                                                                org.apache.flink.runtime.jobgraph.OperatorID operatorId,
                                                                                                                org.apache.flink.runtime.operators.coordination.CoordinationRequest request)
        Sends out a request to a specified coordinator and return the response.
        Parameters:
        jobId - specifies the job which the coordinator belongs to
        operatorId - specifies which coordinator to receive the request
        request - the request to send
        Returns:
        the response from the coordinator

      • listCompletedClusterDatasetIds

        default CompletableFuture<Set<org.apache.flink.util.AbstractID>> listCompletedClusterDatasetIds()
        Return a set of ids of the completed cluster datasets.
        Returns:
        A set of ids of the completely cached intermediate dataset.

      • invalidateClusterDataset

        default CompletableFuture<Void> invalidateClusterDataset​(org.apache.flink.util.AbstractID clusterDatasetId)
        Invalidate the cached intermediate dataset with the given id.
        Parameters:
        clusterDatasetId - id of the cluster dataset to be invalidated.
        Returns:
        Future which will be completed when the cached dataset is invalidated.

      • reportHeartbeat

        default CompletableFuture<Void> reportHeartbeat​(org.apache.flink.api.common.JobID jobId,
                                                long expiredTimestamp)
        The client reports the heartbeat to the dispatcher for aliveness.
        Parameters:
        jobId - The jobId for the client and the job.
        Returns: