/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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
*
* 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 org.apache.hadoop.mapred;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapreduce.MRConfig;
import org.apache.hadoop.mapreduce.protocol.ClientProtocol;
import org.apache.hadoop.mapreduce.protocol.ClientProtocolProvider;
@InterfaceAudience.Private
public class LocalClientProtocolProvider extends ClientProtocolProvider {
@Override
public ClientProtocol create(Configuration conf) throws IOException {
String framework =
conf.get(MRConfig.FRAMEWORK_NAME, MRConfig.LOCAL_FRAMEWORK_NAME);
if (!MRConfig.LOCAL_FRAMEWORK_NAME.equals(framework)) {
return null;
}
conf.setInt(JobContext.NUM_MAPS, 1);
return new LocalJobRunner(conf);
}
@Override
public ClientProtocol create(InetSocketAddress addr, Configuration conf) {
return null; // LocalJobRunner doesn't use a socket
}
@Override
public void close(ClientProtocol clientProtocol) {
// no clean up required
}
}