/***********************************************************************************************************************
* 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.JobStatus;
/**
* This enumeration contains all states a job represented by an {@link ExecutionGraph} can have during its lifetime. It
* contains all states from {@link JobStatus} but also internal states to keep track of shutdown processes.
* <p>
* This class is thread-safe.
*
*/
public enum InternalJobStatus {
/**
* All tasks of the job are in the execution state CREATED.
*/
CREATED,
/**
* All tasks of the job have been accepted by the scheduler, resources have been requested
*/
SCHEDULED,
/**
* At least one task of the job is running, none has definitely failed.
*/
RUNNING,
/**
* At least one task of the job has definitely failed and cannot be recovered. The job is in the process of being
* terminated.
*/
FAILING,
/**
* At least one task of the job has definitively failed and cannot
* be recovered anymore. As a result, the job has been terminated.
*/
FAILED,
/**
* At least one task has been canceled as a result of a user request. The job is in the process of being canceled
* completely.
*/
CANCELING,
/**
* All tasks of the job are canceled as a result of a user request. The job has been terminated.
*/
CANCELED,
/**
* All of the job's tasks have successfully finished.
*/
FINISHED;
/**
* Converts an internal job status in a {@link JobStatus} state.
*
* @param status
* the internal job status to converted.
* @return the corresponding job status or <code>null</code> if no corresponding job status exists
*/
public static JobStatus toJobStatus(InternalJobStatus status) {
switch (status) {
case CREATED:
return JobStatus.CREATED;
case SCHEDULED:
return JobStatus.SCHEDULED;
case RUNNING:
return JobStatus.RUNNING;
case FAILED:
return JobStatus.FAILED;
case CANCELED:
return JobStatus.CANCELED;
case FINISHED:
return JobStatus.FINISHED;
}
return null;
}
}