org.apache.twill.internal.yarn.VersionDetectYarnAppClientFactory 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.twill.internal.yarn;
import com.google.common.base.Throwables;
import org.apache.hadoop.conf.Configuration;
/**
* Helper factory class to return the right instance of {@link YarnAppClient} based on Apache Hadoop version.
*/
public final class VersionDetectYarnAppClientFactory implements YarnAppClientFactory {
@Override
@SuppressWarnings("unchecked")
public YarnAppClient create(Configuration configuration) {
try {
String clzName;
switch (YarnUtils.getHadoopVersion()) {
case HADOOP_21:
case HADOOP_22:
// 2.1 and 2.2 uses the same YarnAppClient
clzName = getClass().getPackage().getName() + ".Hadoop21YarnAppClient";
break;
case HADOOP_23:
// 2.3 and above uses the 2.3 YarnAppClient to support RM HA
clzName = getClass().getPackage().getName() + ".Hadoop23YarnAppClient";
break;
default:
// Anything above 2.3 will be 2.6 and beyond
clzName = getClass().getPackage().getName() + ".Hadoop26YarnAppClient";
}
Class clz = (Class) Class.forName(clzName);
return clz.getConstructor(Configuration.class).newInstance(configuration);
} catch (Exception e) {
throw Throwables.propagate(e);
}
}
}