| /** |
| * 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.oozie.action.hadoop; |
| |
| import org.apache.hadoop.mapred.Counters; |
| import org.apache.hadoop.mapred.Mapper; |
| import org.apache.hadoop.mapred.OutputCollector; |
| import org.apache.hadoop.mapred.Reporter; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapred.Reducer; |
| import org.apache.hadoop.mapred.RunningJob; |
| |
| import java.io.IOException; |
| import java.util.Iterator; |
| |
| @SuppressWarnings("deprecation") |
| public class MapperReducerCredentialsForTest implements Mapper, Reducer { |
| public static final String COUNTER_GROUP = "cg"; |
| public static final String COUNTER_OUTPUT_DATA = "cod"; |
| |
| public static final String TEST_CRED = "testcred"; |
| String credential = null; |
| |
| public static void main(String[] args) { |
| System.out.println("hello!"); |
| } |
| |
| public void configure(JobConf jobConf) { |
| credential = jobConf.get(TEST_CRED); |
| } |
| |
| public void close() throws IOException { |
| } |
| |
| @SuppressWarnings("unchecked") |
| public void map(Object key, Object value, OutputCollector collector, Reporter reporter) throws IOException { |
| collector.collect(key, value); |
| if (credential != null) { |
| reporter.incrCounter(COUNTER_GROUP, COUNTER_OUTPUT_DATA, 1); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| public void reduce(Object key, Iterator values, OutputCollector collector, Reporter reporter) |
| throws IOException { |
| while (values.hasNext()) { |
| collector.collect(key, values.next()); |
| } |
| } |
| |
| public static boolean hasCredentials(RunningJob runningJob) throws IOException { |
| boolean output = false; |
| Counters counters = runningJob.getCounters(); |
| if (counters != null) { |
| Counters.Group group = counters.getGroup(COUNTER_GROUP); |
| if (group != null) { |
| output = group.getCounter(COUNTER_OUTPUT_DATA) > 0; |
| } |
| } |
| return output; |
| } |
| } |