| /** |
| * 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.IOException; |
| import java.net.InetSocketAddress; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.mapred.Task.TaskReporter; |
| import org.apache.hadoop.mapreduce.test.system.FinishTaskControlAction; |
| import org.apache.hadoop.test.system.ControlAction; |
| import org.apache.hadoop.test.system.DaemonProtocol; |
| import org.apache.hadoop.mapreduce.test.system.TTProtocol; |
| |
| public privileged aspect TaskAspect { |
| |
| private static final Log LOG = LogFactory.getLog(TaskAspect.class); |
| |
| private Object waitObject = new Object(); |
| private AtomicBoolean isWaitingForSignal = new AtomicBoolean(false); |
| |
| private DaemonProtocol daemonProxy; |
| |
| pointcut taskDoneIntercept(Task task) : execution( |
| public void Task.done(..)) && target(task); |
| |
| void around(Task task) : taskDoneIntercept(task) { |
| if(task.isJobCleanupTask() || task.isJobSetupTask() || task.isTaskCleanupTask()) { |
| proceed(task); |
| return; |
| } |
| Configuration conf = task.getConf(); |
| boolean controlEnabled = FinishTaskControlAction.isControlActionEnabled(conf); |
| if(controlEnabled) { |
| LOG.info("Task control enabled, waiting till client sends signal to " + |
| "complete"); |
| try { |
| synchronized (waitObject) { |
| isWaitingForSignal.set(true); |
| waitObject.wait(); |
| } |
| } catch (InterruptedException e) { |
| } |
| } |
| proceed(task); |
| return; |
| } |
| |
| pointcut taskStatusUpdate(TaskReporter reporter, TaskAttemptID id) : |
| call(public boolean TaskUmbilicalProtocol.ping(TaskAttemptID)) |
| && this(reporter) && args(id); |
| |
| after(TaskReporter reporter, TaskAttemptID id) throws IOException : |
| taskStatusUpdate(reporter, id) { |
| synchronized (waitObject) { |
| if(isWaitingForSignal.get()) { |
| ControlAction[] actions = daemonProxy.getActions( |
| id.getTaskID()); |
| if(actions.length == 0) { |
| return; |
| } |
| boolean shouldProceed = false; |
| for(ControlAction action : actions) { |
| if (action instanceof FinishTaskControlAction) { |
| LOG.info("Recv : Control task action to finish task id: " |
| + action.getTarget()); |
| shouldProceed = true; |
| daemonProxy.removeAction(action); |
| LOG.info("Removed the control action from TaskTracker"); |
| break; |
| } |
| } |
| if(shouldProceed) { |
| LOG.info("Notifying the task to completion"); |
| waitObject.notify(); |
| } |
| } |
| } |
| } |
| |
| |
| pointcut rpcInterceptor(Class k, long version,InetSocketAddress addr, |
| Configuration conf) : call( |
| public static * RPC.getProxy(Class, long ,InetSocketAddress, |
| Configuration)) && args(k, version,addr, conf) && |
| within(org.apache.hadoop.mapred.Child) ; |
| |
| after(Class k, long version, InetSocketAddress addr, Configuration conf) |
| throws IOException : rpcInterceptor(k, version, addr, conf) { |
| daemonProxy = |
| (TTProtocol) RPC.getProxy( |
| TTProtocol.class, TTProtocol.versionID, addr, conf); |
| } |
| |
| } |