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

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Here is the source code for eu.stratosphere.pact.runtime.task.CrossTaskExternalITCase.java

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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 java.util.List;

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.CrossStub;
import eu.stratosphere.pact.common.type.PactRecord;
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 CrossTaskExternalITCase extends TaskTestBase {
    private static final Log LOG = LogFactory.getLog(CrossTaskExternalITCase.class);

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

    @Test
    public void testExternalBlockCrossTask() {

        int keyCnt1 = 2;
        int valCnt1 = 1;

        // 43690 fit into memory, 43691 do not!
        int keyCnt2 = 43700;
        int valCnt2 = 1;

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

        CrossTask<PactRecord, PactRecord, PactRecord> testTask = new CrossTask<PactRecord, PactRecord, PactRecord>();
        super.getTaskConfig().setLocalStrategy(LocalStrategy.NESTEDLOOP_BLOCKED_OUTER_FIRST);
        super.getTaskConfig().setMemorySize(1 * 1024 * 1024);

        super.registerTask(testTask, MockCrossStub.class);

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

        int expCnt = keyCnt1 * valCnt1 * keyCnt2 * valCnt2;

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

        this.outList.clear();

    }

    @Test
    public void testExternalStreamCrossTask() {

        int keyCnt1 = 2;
        int valCnt1 = 1;

        // 87381 fit into memory, 87382 do not!
        int keyCnt2 = 87385;
        int valCnt2 = 1;

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

        CrossTask<PactRecord, PactRecord, PactRecord> testTask = new CrossTask<PactRecord, PactRecord, PactRecord>();
        super.getTaskConfig().setLocalStrategy(LocalStrategy.NESTEDLOOP_STREAMED_OUTER_FIRST);
        super.getTaskConfig().setMemorySize(1 * 1024 * 1024);

        super.registerTask(testTask, MockCrossStub.class);

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

        int expCnt = keyCnt1 * valCnt1 * keyCnt2 * valCnt2;

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

        this.outList.clear();

    }

    public static class MockCrossStub extends CrossStub {

        @Override
        public void cross(PactRecord record1, PactRecord record2, Collector<PactRecord> out) {

            out.collect(record1);

        }
    }

}