hadoop ShutdownHook 源码
haddop ShutdownHook 代码
文件路径：/hadoop-tools/hadoop-resourceestimator/src/main/java/org/apache/hadoop/resourceestimator/service/ShutdownHook.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.resourceestimator.service;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Simple shutdown hook for {@link ResourceEstimatorServer}.
*/
public class ShutdownHook extends Thread {
private static final Logger LOGGER =
LoggerFactory.getLogger(ShutdownHook.class);
private final ResourceEstimatorServer server;
ShutdownHook(ResourceEstimatorServer server) {
this.server = server;
}
public void run() {
try {
server.shutdown();
} catch (Exception e) {
LOGGER.error("HttpServer fails to shut down!");
}
}
}
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