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YarnClientService.java
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YarnClientService.java
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/**
* Copyright (c) 2012, Cloudera, Inc. All Rights Reserved.
*
* Cloudera, Inc. 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
*
* This software 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 com.cloudera.kitten.client;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ApplicationReport;
import com.google.common.util.concurrent.Service;
/**
* A {@code Service} that handles the client-side logic for the lifecycle of a typical
* YARN application.
*/
public interface YarnClientService extends Service {
/**
* Returns the parameters used to configure this service.
*/
YarnClientParameters getParameters();
/**
* Returns the ID of the application once it has been submitted. Only valid
* while the service is in the RUNNING state.
*/
ApplicationId getApplicationId();
/**
* Queries the YARN resource manager for the current state of the application on
* the cluster and returns the result.
*/
ApplicationReport getApplicationReport();
/**
* Check to see whether or not the application is still executing on the
* cluster.
*/
boolean isApplicationFinished();
/**
* Returns the final application report for this job.
*/
ApplicationReport getFinalReport();
}