com.cloudera.branchreduce.impl.thrift.ClientTest.java Source code

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/**
 * Copyright (c) 2012, Cloudera, Inc. All Rights Reserved.
 *
 * Cloudera, Inc. 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
 *
 * This software 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 com.cloudera.branchreduce.impl.thrift;

import static org.junit.Assert.assertEquals;

import java.io.File;
import java.io.IOException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.server.MiniYARNCluster;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.cloudera.branchreduce.onezero.CurrentBestSolution;
import com.google.common.collect.ImmutableMap;
import com.google.common.io.ByteStreams;

public class ClientTest {
    private static final Log LOG = LogFactory.getLog(ClientTest.class);

    protected MiniYARNCluster yarnCluster = null;
    protected Configuration conf = new Configuration();

    @Before
    public void setup() throws InterruptedException, IOException {
        conf.setInt("yarn.scheduler.fifo.minimum-allocation-mb", 128);
        conf.set("yarn.nodemanager.vmem-pmem-ratio", "20.0");
        if (yarnCluster == null) {
            yarnCluster = new MiniYARNCluster(ClientTest.class.getName(), 1, 1, 1);
            yarnCluster.init(conf);
            yarnCluster.start();
            conf = yarnCluster.getConfig();
        }
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            LOG.info("setup thread sleep interrupted. message=" + e.getMessage());
        }
    }

    @After
    public void tearDown() throws IOException {
        if (yarnCluster != null) {
            yarnCluster.stop();
            yarnCluster = null;
        }
    }

    @Test
    public void testOneWorker() throws Exception {
        runTest(1);
    }

    @Test
    public void testTwoWorkers() throws Exception {
        runTest(2);
    }

    @Test
    public void testThreeWorkers() throws Exception {
        runTest(3);
    }

    public void runTest(int numVassals) throws Exception {
        String config = "/branchreduce_test.lua";
        String lpFile = "/test.lp";
        String lpProblem = new String(ByteStreams.toByteArray(getClass().getResourceAsStream(lpFile)));
        Client client = new Client(ImmutableMap.<String, Object>of("PWD", (new File(".")).getAbsolutePath(),
                "VASSALS", numVassals, "LP_PROBLEM", lpProblem));
        client.setConf(conf);

        assertEquals(0, client.run(new String[] { config, "branchreduce" }));
        assertEquals(17, ((CurrentBestSolution) client.getGlobalState()).getValue());
    }
}