/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed 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 eu.stratosphere.nephele.executiongraph;
import eu.stratosphere.nephele.jobgraph.JobID;
/**
* This interface must be implemented in order to receive a notification whenever the job has entered a new execution
* stage.
*
*/
public interface ExecutionStageListener {
/**
* This method is called to indicate that the job with the given {@link JobID} has finished its previous
* {@link ExecutionStage} and has entered the next {@link ExecutionStage}. Note that a notification is not sent when
* the job has entered its initial execution stage.
*
* @param jobID
* the ID of the job the notification belongs to
* @param executionStage
* the next execution stage that has just been entered
*/
void nextExecutionStageEntered(JobID jobID, ExecutionStage executionStage);
}