/*
* 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.hive.ql.history;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.apache.hadoop.hive.ql.history.HiveHistory.Keys;
import org.apache.hadoop.hive.ql.history.HiveHistory.Listener;
import org.apache.hadoop.hive.ql.history.HiveHistory.QueryInfo;
import org.apache.hadoop.hive.ql.history.HiveHistory.RecordTypes;
import org.apache.hadoop.hive.ql.history.HiveHistory.TaskInfo;
/**
* HiveHistoryViewer.
*
*/
public class HiveHistoryViewer implements Listener {
String historyFile;
String sessionId;
// Job Hash Map
private final HashMap<String, QueryInfo> jobInfoMap = new HashMap<String, QueryInfo>();
// Task Hash Map
private final HashMap<String, TaskInfo> taskInfoMap = new HashMap<String, TaskInfo>();
public HiveHistoryViewer(String path) {
historyFile = path;
init();
}
public String getSessionId() {
return sessionId;
}
public Map<String, QueryInfo> getJobInfoMap() {
return jobInfoMap;
}
public Map<String, TaskInfo> getTaskInfoMap() {
return taskInfoMap;
}
/**
* Parse history files.
*/
void init() {
try {
HiveHistory.parseHiveHistory(historyFile, this);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* Implementation Listner interface function.
*
* @see org.apache.hadoop.hive.ql.history.HiveHistory.Listener#handle(org.apache.hadoop.hive.ql.history.HiveHistory.RecordTypes,
* java.util.Map)
*/
public void handle(RecordTypes recType, Map<String, String> values) {
if (recType == RecordTypes.SessionStart) {
sessionId = values.get(Keys.SESSION_ID.name());
} else if (recType == RecordTypes.QueryStart
|| recType == RecordTypes.QueryEnd) {
String key = values.get(Keys.QUERY_ID.name());
QueryInfo ji;
if (jobInfoMap.containsKey(key)) {
ji = jobInfoMap.get(key);
ji.hm.putAll(values);
} else {
ji = new QueryInfo();
ji.hm = new HashMap<String, String>();
ji.hm.putAll(values);
jobInfoMap.put(key, ji);
}
} else if (recType == RecordTypes.TaskStart
|| recType == RecordTypes.TaskEnd
|| recType == RecordTypes.TaskProgress) {
String jobid = values.get(Keys.QUERY_ID.name());
String taskid = values.get(Keys.TASK_ID.name());
String key = jobid + ":" + taskid;
TaskInfo ti;
if (taskInfoMap.containsKey(key)) {
ti = taskInfoMap.get(key);
ti.hm.putAll(values);
} else {
ti = new TaskInfo();
ti.hm = new HashMap<String, String>();
ti.hm.putAll(values);
taskInfoMap.put(key, ti);
}
}
}
}