| /* |
| * 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.pig.backend.hadoop.executionengine.mapReduceLayer; |
| |
| import java.util.Properties; |
| |
| import org.apache.pig.ExecType; |
| import org.apache.pig.backend.executionengine.ExecutionEngine; |
| import org.apache.pig.impl.PigContext; |
| |
| /** |
| * MRExecType is the ExecType for distributed mode in Hadoop Mapreduce. |
| * |
| */ |
| public class MRExecType implements ExecType { |
| |
| private static final long serialVersionUID = 1L; |
| private static final String[] modes = { "MAPREDUCE", "MAPRED", "MR" }; |
| |
| @Override |
| public boolean accepts(Properties properties) { |
| String execTypeSpecified = properties.getProperty("exectype", "") |
| .toUpperCase(); |
| for (String mode : modes) { |
| if (execTypeSpecified.equals(mode)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public ExecutionEngine getExecutionEngine(PigContext pigContext) { |
| return new MRExecutionEngine(pigContext); |
| } |
| |
| @Override |
| public Class<? extends ExecutionEngine> getExecutionEngineClass() { |
| return MRExecutionEngine.class; |
| } |
| |
| @Override |
| public boolean isLocal() { |
| return false; |
| } |
| |
| @Override |
| public String name() { |
| return "MAPREDUCE"; |
| } |
| |
| public String toString() { |
| return name(); |
| } |
| } |