| /** |
| * 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.util.Collections; |
| import java.util.List; |
| |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.mapred.JobInitializationPoller.JobInitializationThread; |
| |
| public class SimulatorCSJobInitializationThread implements SimulatorEventListener { |
| |
| long lastCalled; |
| CapacityTaskScheduler taskScheduler; |
| JobInitializationPoller jobPoller; |
| private final String queue; |
| final long sleepInterval; |
| /** The log object to send our messages to; only used for debugging. */ |
| private static final Log LOG = LogFactory.getLog(SimulatorCSJobInitializationThread.class); |
| |
| public SimulatorCSJobInitializationThread(TaskScheduler taskScheduler, |
| String queue) { |
| this.taskScheduler = (CapacityTaskScheduler) taskScheduler; |
| jobPoller = this.taskScheduler.getInitializationPoller(); |
| sleepInterval = jobPoller.getSleepInterval(); |
| this.queue = queue; |
| } |
| |
| @Override |
| public List<SimulatorEvent> accept(SimulatorEvent event) throws IOException { |
| |
| SimulatorThreadWakeUpEvent e; |
| if(event instanceof SimulatorThreadWakeUpEvent) { |
| e = (SimulatorThreadWakeUpEvent) event; |
| } |
| else { |
| throw new IOException("Received an unexpected type of event in " + |
| "SimThrdCapSchedJobInit"); |
| } |
| jobPoller.cleanUpInitializedJobsList(); |
| jobPoller.selectJobsToInitialize(); |
| JobInitializationThread thread = |
| jobPoller.getThreadsToQueueMap().get(this.queue); |
| thread.initializeJobs(); |
| lastCalled = e.getTimeStamp(); |
| List<SimulatorEvent> returnEvents = |
| Collections.<SimulatorEvent>singletonList( |
| new SimulatorThreadWakeUpEvent(this, |
| lastCalled + sleepInterval)); |
| return returnEvents; |
| } |
| |
| @Override |
| public List<SimulatorEvent> init(long when) throws IOException { |
| |
| return Collections.<SimulatorEvent>singletonList( |
| new SimulatorThreadWakeUpEvent(this, |
| when + sleepInterval)); |
| } |
| |
| } |