/**
* 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.tajo.master.querymaster;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.event.AsyncDispatcher;
import org.apache.hadoop.yarn.event.EventHandler;
import org.apache.hadoop.yarn.service.CompositeService;
import org.apache.tajo.QueryId;
import org.apache.tajo.QueryIdFactory;
import org.apache.tajo.engine.planner.logical.LogicalRootNode;
import org.apache.tajo.ipc.TajoMasterProtocol;
import org.apache.tajo.engine.query.QueryContext;
import org.apache.tajo.master.TajoMaster;
import org.apache.tajo.master.rm.WorkerResource;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
public class QueryJobManager extends CompositeService {
private static final Log LOG = LogFactory.getLog(QueryJobManager.class.getName());
// TajoMaster Context
private final TajoMaster.MasterContext masterContext;
private AsyncDispatcher dispatcher;
private final Map<QueryId, QueryInProgress> runningQueries = new HashMap<QueryId, QueryInProgress>();
private final Map<QueryId, QueryInProgress> finishedQueries = new HashMap<QueryId, QueryInProgress>();
public QueryJobManager(final TajoMaster.MasterContext masterContext) {
super(QueryJobManager.class.getName());
this.masterContext = masterContext;
}
@Override
public void init(Configuration conf) {
try {
this.dispatcher = new AsyncDispatcher();
addService(this.dispatcher);
this.dispatcher.register(QueryJobEvent.Type.class, new QueryJobManagerEventHandler());
} catch (Exception e) {
catchException(null, e);
}
super.init(conf);
}
@Override
public void stop() {
synchronized(runningQueries) {
for(QueryInProgress eachQueryInProgress: runningQueries.values()) {
eachQueryInProgress.stop();
}
}
super.stop();
}
@Override
public void start() {
super.start();
}
public EventHandler getEventHandler() {
return dispatcher.getEventHandler();
}
public Collection<QueryInProgress> getRunningQueries() {
return Collections.unmodifiableCollection(runningQueries.values());
}
public Collection<QueryInProgress> getFinishedQueries() {
return Collections.unmodifiableCollection(finishedQueries.values());
}
public QueryInfo createNewQueryJob(QueryContext queryContext, String sql, LogicalRootNode plan) throws Exception {
QueryId queryId = QueryIdFactory.newQueryId(masterContext.getResourceManager().getSeedQueryId());
QueryInProgress queryInProgress = new QueryInProgress(masterContext, queryContext, queryId, sql, plan);
synchronized(runningQueries) {
runningQueries.put(queryId, queryInProgress);
}
addService(queryInProgress);
queryInProgress.init(getConfig());
queryInProgress.start();
queryInProgress.startQueryMaster();
return queryInProgress.getQueryInfo();
}
class QueryJobManagerEventHandler implements EventHandler<QueryJobEvent> {
@Override
public void handle(QueryJobEvent event) {
QueryInProgress queryInProgress = null;
synchronized(runningQueries) {
queryInProgress = runningQueries.get(event.getQueryInfo().getQueryId());
if(queryInProgress == null) {
LOG.warn("No query info in running queries.[" + event.getQueryInfo().getQueryId() + "]");
return;
}
}
queryInProgress.getEventHandler().handle(event);
}
}
public QueryInProgress getQueryInProgress(QueryId queryId) {
synchronized(runningQueries) {
return runningQueries.get(queryId);
}
}
public void stopQuery(QueryId queryId) {
LOG.info("Stop QueryInProgress:" + queryId);
QueryInProgress queryInProgress = getQueryInProgress(queryId);
if(queryInProgress != null) {
queryInProgress.stop();
synchronized(runningQueries) {
runningQueries.remove(queryId);
finishedQueries.put(queryId, queryInProgress);
}
} else {
LOG.warn("No QueryInProgress while query stopping: " + queryId);
}
}
private void catchException(QueryId queryId, Exception e) {
LOG.error(e.getMessage(), e);
QueryInProgress queryInProgress = runningQueries.get(queryId);
queryInProgress.catchException(e);
}
public synchronized TajoMasterProtocol.TajoHeartbeatResponse.ResponseCommand queryHeartbeat(
TajoMasterProtocol.TajoHeartbeat queryHeartbeat) {
QueryInProgress queryInProgress = getQueryInProgress(new QueryId(queryHeartbeat.getQueryId()));
if(queryInProgress == null) {
return null;
}
QueryInfo queryInfo = makeQueryInfoFromHeartbeat(queryHeartbeat);
getEventHandler().handle(new QueryJobEvent(QueryJobEvent.Type.QUERY_JOB_HEARTBEAT, queryInfo));
return null;
}
private QueryInfo makeQueryInfoFromHeartbeat(TajoMasterProtocol.TajoHeartbeat queryHeartbeat) {
QueryInfo queryInfo = new QueryInfo(new QueryId(queryHeartbeat.getQueryId()));
if(queryHeartbeat.getTajoWorkerHost() != null) {
WorkerResource queryMasterResource = new WorkerResource();
queryMasterResource.setAllocatedHost(queryHeartbeat.getTajoWorkerHost());
queryMasterResource.setPeerRpcPort(queryHeartbeat.getTajoWorkerPort());
queryMasterResource.setClientPort(queryHeartbeat.getTajoWorkerClientPort());
queryMasterResource.setPullServerPort(queryHeartbeat.getTajoWorkerPullServerPort());
queryInfo.setQueryMasterResource(queryMasterResource);
}
queryInfo.setLastMessage(queryHeartbeat.getStatusMessage());
queryInfo.setQueryState(queryHeartbeat.getState());
queryInfo.setProgress(queryHeartbeat.getQueryProgress());
if (queryHeartbeat.hasQueryFinishTime()) {
queryInfo.setFinishTime(queryHeartbeat.getQueryFinishTime());
}
return queryInfo;
}
}