eu.stratosphere.pact.runtime.task.MatchTaskExternalITCase.java Source code

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/***********************************************************************************************************************
 *
 * Copyright (C) 2010 by the Stratosphere project (http://stratosphere.eu)
 *
 * Licensed 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 eu.stratosphere.pact.runtime.task;

import java.util.ArrayList;

import junit.framework.Assert;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.Test;

import eu.stratosphere.pact.common.stubs.Collector;
import eu.stratosphere.pact.common.stubs.MatchStub;
import eu.stratosphere.pact.common.type.Key;
import eu.stratosphere.pact.common.type.PactRecord;
import eu.stratosphere.pact.common.type.base.PactInteger;
import eu.stratosphere.pact.runtime.plugable.PactRecordComparatorFactory;
import eu.stratosphere.pact.runtime.task.util.TaskConfig.LocalStrategy;
import eu.stratosphere.pact.runtime.test.util.UniformPactRecordGenerator;
import eu.stratosphere.pact.runtime.test.util.TaskTestBase;

public class MatchTaskExternalITCase extends TaskTestBase {
    private static final Log LOG = LogFactory.getLog(MatchTaskExternalITCase.class);

    private final ArrayList<PactRecord> outList = new ArrayList<PactRecord>();

    @Test
    public void testExternalSort1MatchTask() {

        int keyCnt1 = 16384 * 2;
        int valCnt1 = 2;

        int keyCnt2 = 8192;
        int valCnt2 = 4 * 2;

        super.initEnvironment(6 * 1024 * 1024);
        super.addInput(new UniformPactRecordGenerator(keyCnt1, valCnt1, false), 1);
        super.addInput(new UniformPactRecordGenerator(keyCnt2, valCnt2, false), 2);
        super.addOutput(this.outList);

        final MatchTask<PactRecord, PactRecord, PactRecord> testTask = new MatchTask<PactRecord, PactRecord, PactRecord>();
        super.getTaskConfig().setLocalStrategy(LocalStrategy.SORT_BOTH_MERGE);
        super.getTaskConfig().setMemorySize(6 * 1024 * 1024);
        super.getTaskConfig().setNumFilehandles(4);

        final int[] keyPos1 = new int[] { 0 };
        final int[] keyPos2 = new int[] { 0 };
        @SuppressWarnings("unchecked")
        final Class<? extends Key>[] keyClasses = (Class<? extends Key>[]) new Class[] { PactInteger.class };

        PactRecordComparatorFactory.writeComparatorSetupToConfig(super.getTaskConfig().getConfiguration(),
                super.getTaskConfig().getPrefixForInputParameters(0), keyPos1, keyClasses);
        PactRecordComparatorFactory.writeComparatorSetupToConfig(super.getTaskConfig().getConfiguration(),
                super.getTaskConfig().getPrefixForInputParameters(1), keyPos2, keyClasses);

        super.registerTask(testTask, MockMatchStub.class);

        try {
            testTask.invoke();
        } catch (Exception e) {
            LOG.debug(e);
            Assert.fail("Invoke method caused exception.");
        }

        int expCnt = valCnt1 * valCnt2 * Math.min(keyCnt1, keyCnt2);

        Assert.assertTrue("Resultset size was " + this.outList.size() + ". Expected was " + expCnt,
                this.outList.size() == expCnt);

        this.outList.clear();

    }

    @Test
    public void testExternalHash1MatchTask() {

        int keyCnt1 = 32768;
        int valCnt1 = 8;

        int keyCnt2 = 65536;
        int valCnt2 = 8;

        int expCnt = valCnt1 * valCnt2 * Math.min(keyCnt1, keyCnt2);
        this.outList.ensureCapacity(expCnt);

        super.initEnvironment(4 * 1024 * 1024);
        super.addInput(new UniformPactRecordGenerator(keyCnt1, valCnt1, false), 1);
        super.addInput(new UniformPactRecordGenerator(keyCnt2, valCnt2, false), 2);
        super.addOutput(outList);

        final MatchTask<PactRecord, PactRecord, PactRecord> testTask = new MatchTask<PactRecord, PactRecord, PactRecord>();
        super.getTaskConfig().setMemorySize(4 * 1024 * 1024);
        super.getTaskConfig().setLocalStrategy(LocalStrategy.HYBRIDHASH_FIRST);

        final int[] keyPos1 = new int[] { 0 };
        final int[] keyPos2 = new int[] { 0 };
        @SuppressWarnings("unchecked")
        final Class<? extends Key>[] keyClasses = (Class<? extends Key>[]) new Class[] { PactInteger.class };

        PactRecordComparatorFactory.writeComparatorSetupToConfig(super.getTaskConfig().getConfiguration(),
                super.getTaskConfig().getPrefixForInputParameters(0), keyPos1, keyClasses);
        PactRecordComparatorFactory.writeComparatorSetupToConfig(super.getTaskConfig().getConfiguration(),
                super.getTaskConfig().getPrefixForInputParameters(1), keyPos2, keyClasses);

        super.registerTask(testTask, MockMatchStub.class);

        try {
            testTask.invoke();
        } catch (Exception e) {
            LOG.debug(e);
            e.printStackTrace();
            Assert.fail("Invoke method caused exception.");
        }

        Assert.assertTrue("Resultset size was " + outList.size() + ". Expected was " + expCnt,
                outList.size() == expCnt);

        outList.clear();

    }

    @Test
    public void testExternalHash2MatchTask() {

        int keyCnt1 = 32768;
        int valCnt1 = 8;

        int keyCnt2 = 65536;
        int valCnt2 = 8;

        super.initEnvironment(4 * 1024 * 1024);
        super.addInput(new UniformPactRecordGenerator(keyCnt1, valCnt1, false), 1);
        super.addInput(new UniformPactRecordGenerator(keyCnt2, valCnt2, false), 2);
        super.addOutput(outList);

        final MatchTask<PactRecord, PactRecord, PactRecord> testTask = new MatchTask<PactRecord, PactRecord, PactRecord>();
        super.getTaskConfig().setMemorySize(4 * 1024 * 1024);
        super.getTaskConfig().setLocalStrategy(LocalStrategy.HYBRIDHASH_SECOND);

        final int[] keyPos1 = new int[] { 0 };
        final int[] keyPos2 = new int[] { 0 };
        @SuppressWarnings("unchecked")
        final Class<? extends Key>[] keyClasses = (Class<? extends Key>[]) new Class[] { PactInteger.class };

        PactRecordComparatorFactory.writeComparatorSetupToConfig(super.getTaskConfig().getConfiguration(),
                super.getTaskConfig().getPrefixForInputParameters(0), keyPos1, keyClasses);
        PactRecordComparatorFactory.writeComparatorSetupToConfig(super.getTaskConfig().getConfiguration(),
                super.getTaskConfig().getPrefixForInputParameters(1), keyPos2, keyClasses);

        super.registerTask(testTask, MockMatchStub.class);

        try {
            testTask.invoke();
        } catch (Exception e) {
            LOG.debug(e);
        }

        int expCnt = valCnt1 * valCnt2 * Math.min(keyCnt1, keyCnt2);

        Assert.assertTrue("Resultset size was " + outList.size() + ". Expected was " + expCnt,
                outList.size() == expCnt);

        outList.clear();

    }

    public static class MockMatchStub extends MatchStub {
        @Override
        public void match(PactRecord value1, PactRecord value2, Collector<PactRecord> out) throws Exception {
            out.collect(value1);
        }

    }

}