org.goldenorb.io.TestInputSplitAllocatorDFS.java Source code

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Here is the source code for org.goldenorb.io.TestInputSplitAllocatorDFS.java

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/**
 * Licensed to Ravel, Inc. under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  Ravel, 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
 *
 * 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.goldenorb.io;

import static org.junit.Assert.assertTrue;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.goldenorb.conf.OrbConfiguration;
import org.goldenorb.io.InputSplitAllocator;
import org.goldenorb.io.input.RawSplit;
import org.goldenorb.jet.OrbPartitionMember;
import org.goldenorb.net.OrbDNS;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class TestInputSplitAllocatorDFS {

    private static MiniDFSCluster cluster;
    private static FileSystem fs;

    private Logger LOG;

    @BeforeClass
    public static void setUpCluster() throws Exception {
        Configuration conf = new Configuration(true);
        conf.set("dfs.block.size", "16384");
        cluster = new MiniDFSCluster(conf, 3, true, null);
        fs = cluster.getFileSystem();
    }

    @Test
    public void testInputSplitAllocator() throws Exception {
        LOG = LoggerFactory.getLogger(TestInputSplitAllocatorDFS.class);

        fs.copyFromLocalFile(new Path("src/test/resources/InputSplitAllocatorDFSTestData.txt"),
                new Path("test/inpath"));

        OrbConfiguration orbConf = new OrbConfiguration(true);
        orbConf.set("fs.default.name", "hdfs://localhost:" + cluster.getNameNodePort());
        orbConf.setJobNumber("0");
        orbConf.setFileInputPath("test/inpath");
        orbConf.setNameNode("hdfs://localhost:" + cluster.getNameNodePort());

        String hostname = OrbDNS.getDefaultHost(orbConf);
        if (hostname.endsWith(".")) {
            hostname = hostname.substring(0, hostname.length() - 1);
        }

        OrbPartitionMember opm1 = new OrbPartitionMember();
        opm1.setHostname(hostname);
        opm1.setPort(0);
        OrbPartitionMember opm2 = new OrbPartitionMember();
        opm2.setHostname(hostname);
        opm2.setPort(1);
        OrbPartitionMember opm3 = new OrbPartitionMember();
        opm3.setHostname(hostname);
        opm3.setPort(2);
        OrbPartitionMember opm4 = new OrbPartitionMember();
        opm4.setHostname(hostname);
        opm4.setPort(3);
        OrbPartitionMember opm5 = new OrbPartitionMember();
        opm5.setHostname(hostname);
        opm5.setPort(4);
        OrbPartitionMember opm6 = new OrbPartitionMember();
        opm6.setHostname(hostname);
        opm6.setPort(5);

        List<OrbPartitionMember> orbPartitionMembers = new ArrayList<OrbPartitionMember>();
        orbPartitionMembers.add(opm1);
        orbPartitionMembers.add(opm2);
        orbPartitionMembers.add(opm3);
        orbPartitionMembers.add(opm4);
        orbPartitionMembers.add(opm5);
        orbPartitionMembers.add(opm6);

        InputSplitAllocator isa = new InputSplitAllocator(orbConf, orbPartitionMembers);
        Map<OrbPartitionMember, List<RawSplit>> inputSplitAssignments = isa.assignInputSplits();
        long totalFileSize = 0;
        for (OrbPartitionMember orbPartitionMember : inputSplitAssignments.keySet()) {
            long rawSplitSize = 0;
            for (RawSplit rSplit : inputSplitAssignments.get(orbPartitionMember)) {
                rawSplitSize += rSplit.getDataLength();
            }
            totalFileSize += rawSplitSize;

            LOG.info(orbPartitionMember.getHostname() + ":" + orbPartitionMember.getPort() + " | RawSplits count: "
                    + inputSplitAssignments.get(orbPartitionMember).size() + " | RawSplits size: " + rawSplitSize);

            assertTrue(inputSplitAssignments.get(orbPartitionMember).size() <= 5);
        }

        File testFile = new File("src/test/resources/InputSplitAllocatorDFSTestData.txt");
        assertTrue(totalFileSize == testFile.length());
    }

    @AfterClass
    public static void tearDownCluster() throws IOException {
        if (fs != null) {
            fs.close();
        }
    }
}