hadoop JvmContext 源码
haddop JvmContext 代码
文件路径：/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JvmContext.java
/**
* 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.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
class JvmContext implements Writable {
public static final Logger LOG =
LoggerFactory.getLogger(JvmContext.class);
JVMId jvmId;
String pid;
JvmContext() {
jvmId = new JVMId();
pid = "";
}
JvmContext(JVMId id, String pid) {
jvmId = id;
this.pid = pid;
}
public void readFields(DataInput in) throws IOException {
jvmId.readFields(in);
this.pid = Text.readString(in);
}
public void write(DataOutput out) throws IOException {
jvmId.write(out);
Text.writeString(out, pid);
}
}
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