| /** |
| * 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.util.ArrayList; |
| import java.util.Collection; |
| |
| import org.apache.hadoop.mapreduce.TaskType; |
| |
| /** |
| * A schedulable pool of jobs. |
| */ |
| public class Pool { |
| /** Name of the default pool, where jobs with no pool parameter go. */ |
| public static final String DEFAULT_POOL_NAME = "default"; |
| |
| /** Pool name. */ |
| private String name; |
| |
| /** Jobs in this specific pool; does not include children pools' jobs. */ |
| private Collection<JobInProgress> jobs = new ArrayList<JobInProgress>(); |
| |
| /** Scheduling mode for jobs inside the pool (fair or FIFO) */ |
| private SchedulingMode schedulingMode; |
| |
| private PoolSchedulable mapSchedulable; |
| private PoolSchedulable reduceSchedulable; |
| |
| public Pool(FairScheduler scheduler, String name) { |
| this.name = name; |
| mapSchedulable = new PoolSchedulable(scheduler, this, TaskType.MAP); |
| reduceSchedulable = new PoolSchedulable(scheduler, this, TaskType.REDUCE); |
| } |
| |
| public Collection<JobInProgress> getJobs() { |
| return jobs; |
| } |
| |
| public void addJob(JobInProgress job) { |
| jobs.add(job); |
| mapSchedulable.addJob(job); |
| reduceSchedulable.addJob(job); |
| } |
| |
| public void removeJob(JobInProgress job) { |
| jobs.remove(job); |
| mapSchedulable.removeJob(job); |
| reduceSchedulable.removeJob(job); |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public SchedulingMode getSchedulingMode() { |
| return schedulingMode; |
| } |
| |
| public void setSchedulingMode(SchedulingMode schedulingMode) { |
| this.schedulingMode = schedulingMode; |
| } |
| |
| public boolean isDefaultPool() { |
| return Pool.DEFAULT_POOL_NAME.equals(name); |
| } |
| |
| public PoolSchedulable getMapSchedulable() { |
| return mapSchedulable; |
| } |
| |
| public PoolSchedulable getReduceSchedulable() { |
| return reduceSchedulable; |
| } |
| |
| public PoolSchedulable getSchedulable(TaskType type) { |
| return type == TaskType.MAP ? mapSchedulable : reduceSchedulable; |
| } |
| } |