org.apache.tajo.master.querymaster.QueryMasterRunner.java Source code

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Here is the source code for org.apache.tajo.master.querymaster.QueryMasterRunner.java

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/**
 * 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.fs.Path;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.service.AbstractService;
import org.apache.hadoop.yarn.util.RackResolver;
import org.apache.tajo.QueryId;
import org.apache.tajo.TajoConstants;
import org.apache.tajo.conf.TajoConf;
import org.apache.tajo.util.TajoIdUtils;

import java.io.PrintWriter;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;

@Deprecated
public class QueryMasterRunner extends AbstractService {
    private static final Log LOG = LogFactory.getLog(QueryMasterRunner.class);
    private TajoConf systemConf;
    private QueryMaster queryMaster;
    private QueryId queryId;
    private String queryMasterManagerAddress;

    public QueryMasterRunner(QueryId queryId, String queryMasterManagerAddress) {
        super(QueryMasterRunner.class.getName());
        this.queryId = queryId;
        this.queryMasterManagerAddress = queryMasterManagerAddress;
    }

    private class ShutdownHook implements Runnable {
        @Override
        public void run() {
            LOG.info("============================================");
            LOG.info("QueryMaster received SIGINT Signal");
            LOG.info("============================================");
            stop();
        }
    }

    @Override
    public void init(Configuration conf) {
        this.systemConf = (TajoConf) conf;
        RackResolver.init(systemConf);
        Runtime.getRuntime().addShutdownHook(new Thread(new ShutdownHook()));
        super.init(conf);
    }

    @Override
    public void start() {
        //create QueryMaster
        QueryMaster query = new QueryMaster(null);

        query.init(systemConf);
        query.start();
    }

    @Override
    public void stop() {
    }

    public static void main(String[] args) throws Exception {
        LOG.info("QueryMasterRunner started");

        final TajoConf conf = new TajoConf();
        conf.addResource(new Path(TajoConstants.SYSTEM_CONF_FILENAME));

        UserGroupInformation.setConfiguration(conf);

        final QueryId queryId = TajoIdUtils.parseQueryId(args[0]);
        final String queryMasterManagerAddr = args[1];

        LOG.info("Received QueryId:" + queryId);

        QueryMasterRunner queryMasterRunner = new QueryMasterRunner(queryId, queryMasterManagerAddr);
        queryMasterRunner.init(conf);
        queryMasterRunner.start();

        synchronized (queryId) {
            queryId.wait();
        }

        System.exit(0);
    }

    public static void printThreadInfo(PrintWriter stream, String title) {
        ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
        final int STACK_DEPTH = 60;
        boolean contention = threadBean.isThreadContentionMonitoringEnabled();
        long[] threadIds = threadBean.getAllThreadIds();
        stream.println("Process Thread Dump: " + title);
        stream.println(threadIds.length + " active threads");
        for (long tid : threadIds) {
            ThreadInfo info = threadBean.getThreadInfo(tid, STACK_DEPTH);
            if (info == null) {
                stream.println("  Inactive");
                continue;
            }
            stream.println("Thread " + getTaskName(info.getThreadId(), info.getThreadName()) + ":");
            Thread.State state = info.getThreadState();
            stream.println("  State: " + state);
            stream.println("  Blocked count: " + info.getBlockedCount());
            stream.println("  Waited count: " + info.getWaitedCount());
            if (contention) {
                stream.println("  Blocked time: " + info.getBlockedTime());
                stream.println("  Waited time: " + info.getWaitedTime());
            }
            if (state == Thread.State.WAITING) {
                stream.println("  Waiting on " + info.getLockName());
            } else if (state == Thread.State.BLOCKED) {
                stream.println("  Blocked on " + info.getLockName());
                stream.println("  Blocked by " + getTaskName(info.getLockOwnerId(), info.getLockOwnerName()));
            }
            stream.println("  Stack:");
            for (StackTraceElement frame : info.getStackTrace()) {
                stream.println("    " + frame.toString());
            }
        }
        stream.flush();
    }

    private static String getTaskName(long id, String name) {
        if (name == null) {
            return Long.toString(id);
        }
        return id + " (" + name + ")";
    }
}