org.apache.flink.runtime.executiongraph.AccessExecutionGraph Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.executiongraph;
import org.apache.flink.api.common.ArchivedExecutionConfig;
import org.apache.flink.api.common.JobID;
import org.apache.flink.runtime.accumulators.StringifiedAccumulatorResult;
import org.apache.flink.runtime.checkpoint.CheckpointCoordinator;
import org.apache.flink.runtime.checkpoint.CheckpointStatsSnapshot;
import org.apache.flink.runtime.jobgraph.JobStatus;
import org.apache.flink.runtime.jobgraph.JobVertexID;
import org.apache.flink.runtime.jobgraph.tasks.JobCheckpointingSettings;
import org.apache.flink.util.SerializedValue;
import java.io.IOException;
import java.util.Map;
/**
* Common interface for the runtime {@link ExecutionGraph} and {@link ArchivedExecutionGraph}.
*/
public interface AccessExecutionGraph {
/**
* Returns the job plan as a JSON string.
*
* @return job plan as a JSON string
*/
String getJsonPlan();
/**
* Returns the {@link JobID} for this execution graph.
*
* @return job ID for this execution graph
*/
JobID getJobID();
/**
* Returns the job name for thie execution graph.
*
* @return job name for this execution graph
*/
String getJobName();
/**
* Returns the current {@link JobStatus} for this execution graph.
*
* @return job status for this execution graph
*/
JobStatus getState();
/**
* Returns the exception that caused the job to fail. This is the first root exception
* that was not recoverable and triggered job failure.
*
* @return failure causing exception as a string, or {@code "(null)"}
*/
String getFailureCauseAsString();
/**
* Returns the job vertex for the given {@link JobVertexID}.
*
* @param id id of job vertex to be returned
* @return job vertex for the given id, or null
*/
AccessExecutionJobVertex getJobVertex(JobVertexID id);
/**
* Returns a map containing all job vertices for this execution graph.
*
* @return map containing all job vertices for this execution graph
*/
Map getAllVertices();
/**
* Returns an iterable containing all job vertices for this execution graph in the order they were created.
*
* @return iterable containing all job vertices for this execution graph in the order they were creater
*/
Iterable getVerticesTopologically();
/**
* Returns an iterable containing all execution vertices for this execution graph.
*
* @return iterable containing all execution vertices for this execution graph
*/
Iterable getAllExecutionVertices();
/**
* Returns the timestamp for the given {@link JobStatus}
*
* @param status status for which the timestamp should be returned
* @return timestamp for the given job status
*/
long getStatusTimestamp(JobStatus status);
/**
* Returns the {@link CheckpointCoordinator} for this execution graph.
*
* @return CheckpointCoordinator for this execution graph or null
* if none is available.
*/
CheckpointCoordinator getCheckpointCoordinator();
/**
* Returns the {@link JobCheckpointingSettings} or null if
* checkpointing is disabled.
*
* @return JobSnapshottingSettings for this execution graph
*/
JobCheckpointingSettings getJobCheckpointingSettings();
/**
* Returns a snapshot of the checkpoint statistics or null if
* checkpointing is disabled.
*
* @return Snapshot of the checkpoint statistics for this execution graph
*/
CheckpointStatsSnapshot getCheckpointStatsSnapshot();
/**
* Returns the {@link ArchivedExecutionConfig} for this execution graph.
*
* @return execution config summary for this execution graph, or null in case of errors
*/
ArchivedExecutionConfig getArchivedExecutionConfig();
/**
* Returns whether the job for this execution graph is stoppable.
*
* @return true, if all sources tasks are stoppable, false otherwise
*/
boolean isStoppable();
/**
* Returns the aggregated user-defined accumulators as strings.
*
* @return aggregated user-defined accumulators as strings.
*/
StringifiedAccumulatorResult[] getAccumulatorResultsStringified();
/**
* Returns a map containing the serialized values of user-defined accumulators.
*
* @return map containing serialized values of user-defined accumulators
* @throws IOException indicates that the serialization has failed
*/
Map> getAccumulatorsSerialized() throws IOException;
/**
* Returns whether this execution graph was archived.
*
* @return true, if the execution graph was archived, false otherwise
*/
boolean isArchived();
}