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HADOOP-14386. Rewind trunk from Guava 21.0 back to Guava 11.0.2.
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154 changes: 154 additions & 0 deletions
154
...doop-hdfs/src/test/java/org/apache/hadoop/hdfs/qjournal/client/DirectExecutorService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| /** | ||
| * 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.hadoop.hdfs.qjournal.client; | ||
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| import java.util.Collection; | ||
| import java.util.List; | ||
| import java.util.concurrent.Callable; | ||
| import java.util.concurrent.ExecutionException; | ||
| import java.util.concurrent.ExecutorService; | ||
| import java.util.concurrent.Future; | ||
| import java.util.concurrent.RejectedExecutionException; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.concurrent.TimeoutException; | ||
|
|
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| /** | ||
| * A very basic ExecutorService for running submitted Callables serially. | ||
| * Many bits of functionality are not implemented. | ||
| */ | ||
| public class DirectExecutorService implements ExecutorService { | ||
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| private static class DirectFuture<V> implements Future<V> { | ||
| private V result = null; | ||
| private Exception ex = null; | ||
|
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| DirectFuture(Callable<V> c) { | ||
| try { | ||
| result = c.call(); | ||
| } catch (Exception e) { | ||
| ex = e; | ||
| } | ||
| } | ||
|
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| @Override | ||
| public boolean cancel(boolean mayInterruptIfRunning) { | ||
| return false; | ||
| } | ||
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| @Override | ||
| public boolean isCancelled() { | ||
| return false; | ||
| } | ||
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| @Override | ||
| public boolean isDone() { | ||
| return true; | ||
| } | ||
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| @Override | ||
| public V get() throws InterruptedException, ExecutionException { | ||
| if (ex != null) { | ||
| throw new ExecutionException(ex); | ||
| } | ||
| return result; | ||
| } | ||
|
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| @Override | ||
| public V get(long timeout, TimeUnit unit) | ||
| throws InterruptedException, ExecutionException, TimeoutException { | ||
| return get(); | ||
| } | ||
| } | ||
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| private boolean isShutdown = false; | ||
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| @Override | ||
| synchronized public void shutdown() { | ||
| isShutdown = true; | ||
| } | ||
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| @Override | ||
| public List<Runnable> shutdownNow() { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
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| @Override | ||
| public boolean isShutdown() { | ||
| return isShutdown; | ||
| } | ||
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| @Override | ||
| synchronized public boolean isTerminated() { | ||
| return isShutdown; | ||
| } | ||
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| @Override | ||
| public boolean awaitTermination(long timeout, TimeUnit unit) | ||
| throws InterruptedException { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| @Override | ||
| synchronized public <T> Future<T> submit(Callable<T> task) { | ||
| if (isShutdown) { | ||
| throw new RejectedExecutionException("ExecutorService was shutdown"); | ||
| } | ||
| return new DirectFuture<>(task); | ||
| } | ||
|
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| @Override | ||
| public <T> Future<T> submit(Runnable task, T result) { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| @Override | ||
| public Future<?> submit(Runnable task) { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| @Override | ||
| public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks) | ||
| throws InterruptedException { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| @Override | ||
| public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks, | ||
| long timeout, TimeUnit unit) throws InterruptedException { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| @Override | ||
| public <T> T invokeAny(Collection<? extends Callable<T>> tasks) | ||
| throws InterruptedException, ExecutionException { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| @Override | ||
| public <T> T invokeAny(Collection<? extends Callable<T>> tasks, long timeout, | ||
| TimeUnit unit) | ||
| throws InterruptedException, ExecutionException, TimeoutException { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| @Override | ||
| synchronized public void execute(Runnable command) { | ||
| command.run(); | ||
| } | ||
| } |
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