org.apache.flink.runtime.executiongraph.ExecutionStatusListener Maven / Gradle / Ivy
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* 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,
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*/
package org.apache.flink.runtime.executiongraph;
import org.apache.flink.api.common.JobID;
import org.apache.flink.runtime.execution.ExecutionState;
import org.apache.flink.runtime.jobgraph.JobVertexID;
/**
* Interface for observers that monitor the status of individual task executions.
*/
public interface ExecutionStatusListener {
/**
* Called whenever the execution status of a task changes.
*
* @param jobID The ID of the job
* @param vertexID The ID of the task vertex
* @param taskName The name of the task
* @param totalNumberOfSubTasks The parallelism of the task
* @param subtaskIndex The subtask's parallel index
* @param executionID The ID of the execution attempt
* @param newExecutionState The status to which the task switched
* @param timestamp The timestamp when the change occurred. Informational only.
* @param optionalMessage An optional message attached to the status change, like an
* exception message.
*/
void executionStatusChanged(
JobID jobID,
JobVertexID vertexID,
String taskName,
int totalNumberOfSubTasks,
int subtaskIndex,
ExecutionAttemptID executionID,
ExecutionState newExecutionState,
long timestamp,
String optionalMessage);
}