| /** |
| * 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.crunch.impl.mr.run; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.crunch.CrunchRuntimeException; |
| import org.apache.crunch.impl.mr.plan.PlanningParameters; |
| import org.apache.crunch.io.CrunchOutputs; |
| import org.apache.crunch.util.DistCache; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.mapreduce.TaskInputOutputContext; |
| |
| class CrunchTaskContext { |
| |
| private final TaskInputOutputContext<Object, Object, Object, Object> taskContext; |
| private final NodeContext nodeContext; |
| private final List<RTNode> nodes; |
| private CrunchOutputs<Object, Object> multipleOutputs; |
| |
| public CrunchTaskContext(TaskInputOutputContext<Object, Object, Object, Object> taskContext, |
| NodeContext nodeContext) { |
| this.taskContext = taskContext; |
| this.nodeContext = nodeContext; |
| Configuration conf = taskContext.getConfiguration(); |
| Path path = new Path(nodeContext.toString()); |
| try { |
| this.nodes = (List<RTNode>) DistCache.read(conf, path); |
| } catch (IOException e) { |
| throw new CrunchRuntimeException("Could not read runtime node information", e); |
| } |
| } |
| |
| public TaskInputOutputContext<Object, Object, Object, Object> getContext() { |
| return taskContext; |
| } |
| |
| public NodeContext getNodeContext() { |
| return nodeContext; |
| } |
| |
| public List<RTNode> getNodes() { |
| return nodes; |
| } |
| |
| public boolean isDebugRun() { |
| Configuration conf = taskContext.getConfiguration(); |
| return conf.getBoolean(RuntimeParameters.DEBUG, false); |
| } |
| |
| public void cleanup() { |
| if (multipleOutputs != null) { |
| try { |
| multipleOutputs.close(); |
| } catch (IOException e) { |
| throw new CrunchRuntimeException(e); |
| } catch (InterruptedException e) { |
| throw new CrunchRuntimeException(e); |
| } |
| } |
| } |
| |
| public CrunchOutputs<Object, Object> getMultipleOutputs() { |
| if (multipleOutputs == null) { |
| multipleOutputs = new CrunchOutputs<Object, Object>(taskContext); |
| } |
| return multipleOutputs; |
| } |
| } |