org.apache.hadoop.hive.common.HiveInterruptUtils Maven / Gradle / Ivy
/*
* 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.hive.common;
import java.util.ArrayList;
import java.util.List;
public class HiveInterruptUtils {
/**
* A list of currently running comments that needs cleanup when the command is canceled
*/
private static List interruptCallbacks = new ArrayList();
public static HiveInterruptCallback add(HiveInterruptCallback command) {
synchronized (interruptCallbacks) {
interruptCallbacks.add(command);
}
return command;
}
public static HiveInterruptCallback remove(HiveInterruptCallback command) {
synchronized (interruptCallbacks) {
interruptCallbacks.remove(command);
}
return command;
}
/**
* Request interruption of current hive command
*/
public static void interrupt() {
synchronized (interruptCallbacks) {
for (HiveInterruptCallback resource : new ArrayList(interruptCallbacks)) {
resource.interrupt();
}
}
}
/**
* Checks if the current thread has been interrupted and throws RuntimeException is it has.
*/
public static void checkInterrupted() {
if (Thread.currentThread().isInterrupted()) {
InterruptedException interrupt = null;
try {
Thread.sleep(0);
} catch (InterruptedException e) {
interrupt = e;
}
throw new RuntimeException("Interrupted", interrupt);
}
}
}