| /* |
| * 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.chukwa.extraction.demux.processor.reducer; |
| |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecord; |
| import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecordKey; |
| import org.apache.hadoop.chukwa.extraction.engine.Record; |
| import org.apache.hadoop.mapred.OutputCollector; |
| import org.apache.hadoop.mapred.Reporter; |
| import org.apache.log4j.Logger; |
| |
| public class MRJobReduceProcessor implements ReduceProcessor { |
| static Logger log = Logger.getLogger(MRJobReduceProcessor.class); |
| |
| @Override |
| public String getDataType() { |
| return MRJobReduceProcessor.class.getName(); |
| } |
| |
| @Override |
| public void process(ChukwaRecordKey key, Iterator<ChukwaRecord> values, |
| OutputCollector<ChukwaRecordKey, ChukwaRecord> output, Reporter reporter) { |
| try { |
| HashMap<String, String> data = new HashMap<String, String>(); |
| |
| ChukwaRecord record = null; |
| String[] fields = null; |
| while (values.hasNext()) { |
| record = values.next(); |
| fields = record.getFields(); |
| for (String field : fields) { |
| data.put(field, record.getValue(field)); |
| } |
| } |
| |
| // Extract initial time: SUBMIT_TIME |
| long initTime = Long.parseLong(data.get("SUBMIT_TIME")); |
| |
| // Extract HodId |
| // maybe use a regex to extract this and load it from configuration |
| // JOBCONF= |
| // "/user/xxx/mapredsystem/563976.xxx.yyy.com/job_200809062051_0001/job.xml" |
| String jobConf = data.get("JOBCONF"); |
| int idx = jobConf.indexOf("mapredsystem/"); |
| idx += 13; |
| int idx2 = jobConf.indexOf(".", idx); |
| data.put("HodId", jobConf.substring(idx, idx2)); |
| |
| ChukwaRecordKey newKey = new ChukwaRecordKey(); |
| newKey.setKey("" + initTime); |
| newKey.setReduceType("MRJob"); |
| |
| ChukwaRecord newRecord = new ChukwaRecord(); |
| newRecord.add(Record.tagsField, record.getValue(Record.tagsField)); |
| newRecord.setTime(initTime); |
| newRecord.add(Record.tagsField, record.getValue(Record.tagsField)); |
| Iterator<Map.Entry<String, String>> it = data.entrySet().iterator(); |
| while (it.hasNext()) { |
| Map.Entry<String, ?> entry = it.next(); |
| String field = entry.getKey(); |
| String value = entry.getValue().toString(); |
| newRecord.add(field, value); |
| } |
| |
| output.collect(newKey, newRecord); |
| } catch (IOException e) { |
| log.warn("Unable to collect output in JobLogHistoryReduceProcessor [" |
| + key + "]", e); |
| e.printStackTrace(); |
| } |
| |
| } |
| |
| } |