/*
* Copyright © 2014-2015 Cask Data, Inc.
*
* 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 co.cask.cdap.internal.app.runtime.distributed;
import co.cask.cdap.api.Resources;
import co.cask.cdap.api.mapreduce.MapReduce;
import co.cask.cdap.api.mapreduce.MapReduceSpecification;
import co.cask.cdap.app.program.Program;
import co.cask.cdap.proto.ProgramType;
import com.google.common.base.Objects;
import org.apache.twill.api.EventHandler;
import org.apache.twill.api.TwillApplication;
import java.util.Map;
/**
* The {@link TwillApplication} for running {@link MapReduce} in distributed mode.
*/
public final class MapReduceTwillApplication extends AbstractProgramTwillApplication {
private final MapReduceSpecification spec;
public MapReduceTwillApplication(Program program, MapReduceSpecification spec,
Map<String, LocalizeResource> localizeResources,
EventHandler eventHandler) {
super(program, localizeResources, eventHandler);
this.spec = spec;
}
@Override
protected ProgramType getType() {
return ProgramType.MAPREDUCE;
}
@Override
protected void addRunnables(Map<String, RunnableResource> runnables) {
// These resources are for the container that runs the mapred client that will launch the actual mapred job.
runnables.put(spec.getName(), new RunnableResource(
new MapReduceTwillRunnable(spec.getName(), "hConf.xml", "cConf.xml"),
createResourceSpec(Objects.firstNonNull(spec.getDriverResources(), new Resources()), 1)
));
}
}