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[FLINK-5082] Pull ExecutorService lifecycle management out of the Job…
…Manager The provided ExecutorService will no longer be closed by the JobManager. Instead the lifecycle is managed outside of it where it was created. This will give a nicer behaviour, because it better seperates responsibilities. This closes apache#2820.
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58
flink-runtime/src/main/java/org/apache/flink/runtime/util/NamedThreadFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.flink.runtime.util; | ||
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| import java.util.concurrent.ThreadFactory; | ||
| import java.util.concurrent.atomic.AtomicInteger; | ||
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| /** | ||
| * Thread factory which allows to specify a thread pool name and a thread name. | ||
| * | ||
| * The code is based on {@link java.util.concurrent.Executors.DefaultThreadFactory}. | ||
| */ | ||
| public class NamedThreadFactory implements ThreadFactory { | ||
| private static final AtomicInteger poolNumber = new AtomicInteger(1); | ||
| private final ThreadGroup group; | ||
| private final AtomicInteger threadNumber = new AtomicInteger(1); | ||
| private final String namePrefix; | ||
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| public NamedThreadFactory(final String poolName, final String threadName) { | ||
| SecurityManager securityManager = System.getSecurityManager(); | ||
| group = (securityManager != null) ? securityManager.getThreadGroup() : | ||
| Thread.currentThread().getThreadGroup(); | ||
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| namePrefix = poolName + | ||
| poolNumber.getAndIncrement() + | ||
| threadName; | ||
| } | ||
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| @Override | ||
| public Thread newThread(Runnable runnable) { | ||
| Thread t = new Thread(group, runnable, | ||
| namePrefix + threadNumber.getAndIncrement(), | ||
| 0); | ||
| if (t.isDaemon()) { | ||
| t.setDaemon(false); | ||
| } | ||
| if (t.getPriority() != Thread.NORM_PRIORITY) { | ||
| t.setPriority(Thread.NORM_PRIORITY); | ||
| } | ||
| return t; | ||
| } | ||
| } |
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