Java tutorial
/*********************************************************************************************************************** * * 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.DelayingInfinitiveInputIterator; import eu.stratosphere.pact.runtime.test.util.UniformPactRecordGenerator; import eu.stratosphere.pact.runtime.test.util.TaskCancelThread; import eu.stratosphere.pact.runtime.test.util.TaskTestBase; public class CrossTaskTest extends TaskTestBase { private static final Log LOG = LogFactory.getLog(CrossTaskTest.class); private final List<PactRecord> outList = new ArrayList<PactRecord>(); @Test public void testBlock1CrossTask() { int keyCnt1 = 10; int valCnt1 = 1; int keyCnt2 = 100; int valCnt2 = 4; 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 testBlock2CrossTask() { int keyCnt1 = 10; int valCnt1 = 1; int keyCnt2 = 100; int valCnt2 = 4; 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_SECOND); 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 testFailingBlockCrossTask() { int keyCnt1 = 10; int valCnt1 = 1; int keyCnt2 = 100; int valCnt2 = 4; 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, MockFailingCrossStub.class); boolean stubFailed = false; try { testTask.invoke(); } catch (Exception e) { stubFailed = true; } Assert.assertTrue("Stub exception was not forwarded.", stubFailed); this.outList.clear(); } @Test public void testStream1CrossTask() { int keyCnt1 = 10; int valCnt1 = 1; int keyCnt2 = 100; int valCnt2 = 4; 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(); } @Test public void testStream2CrossTask() { int keyCnt1 = 10; int valCnt1 = 1; int keyCnt2 = 100; int valCnt2 = 4; 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_SECOND); 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 testStreamEmptyInnerCrossTask() { int keyCnt1 = 10; int valCnt1 = 1; int keyCnt2 = 0; int valCnt2 = 0; 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(); } @Test public void testStreamEmptyOuterCrossTask() { int keyCnt1 = 10; int valCnt1 = 1; int keyCnt2 = 0; int valCnt2 = 0; super.initEnvironment(1 * 1024 * 1024); super.addInput(new UniformPactRecordGenerator(keyCnt1, valCnt1, false), 0); super.addInput(new UniformPactRecordGenerator(keyCnt2, valCnt2, false), 1); super.addOutput(this.outList); CrossTask<PactRecord, PactRecord, PactRecord> testTask = new CrossTask<PactRecord, PactRecord, PactRecord>(); super.getTaskConfig().setLocalStrategy(LocalStrategy.NESTEDLOOP_STREAMED_OUTER_SECOND); 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 testBlockEmptyInnerCrossTask() { int keyCnt1 = 10; int valCnt1 = 1; int keyCnt2 = 0; int valCnt2 = 0; super.initEnvironment(1 * 1024 * 1024); super.addInput(new UniformPactRecordGenerator(keyCnt1, valCnt1, false), 0); super.addInput(new UniformPactRecordGenerator(keyCnt2, valCnt2, false), 1); 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 testBlockEmptyOuterCrossTask() { int keyCnt1 = 10; int valCnt1 = 1; int keyCnt2 = 0; int valCnt2 = 0; super.initEnvironment(1 * 1024 * 1024); super.addInput(new UniformPactRecordGenerator(keyCnt1, valCnt1, false), 0); super.addInput(new UniformPactRecordGenerator(keyCnt2, valCnt2, false), 1); super.addOutput(this.outList); CrossTask<PactRecord, PactRecord, PactRecord> testTask = new CrossTask<PactRecord, PactRecord, PactRecord>(); super.getTaskConfig().setLocalStrategy(LocalStrategy.NESTEDLOOP_BLOCKED_OUTER_SECOND); 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 testFailingStreamCrossTask() { int keyCnt1 = 10; int valCnt1 = 1; int keyCnt2 = 100; int valCnt2 = 4; 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, MockFailingCrossStub.class); boolean stubFailed = false; try { testTask.invoke(); } catch (Exception e) { stubFailed = true; } Assert.assertTrue("Stub exception was not forwarded.", stubFailed); this.outList.clear(); } @Test public void testCancelBlockCrossTaskInit() { int keyCnt = 10; int valCnt = 1; super.initEnvironment(1 * 1024 * 1024); super.addInput(new UniformPactRecordGenerator(keyCnt, valCnt, false), 1); super.addInput(new DelayingInfinitiveInputIterator(100), 2); super.addOutput(this.outList); final 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); Thread taskRunner = new Thread() { @Override public void run() { try { testTask.invoke(); } catch (Exception ie) { ie.printStackTrace(); Assert.fail("Task threw exception although it was properly canceled"); } } }; taskRunner.start(); TaskCancelThread tct = new TaskCancelThread(1, taskRunner, testTask); tct.start(); try { tct.join(); taskRunner.join(); } catch (InterruptedException ie) { Assert.fail("Joining threads failed"); } } @Test public void testCancelBlockCrossTaskCrossing() { int keyCnt = 10; int valCnt = 1; super.initEnvironment(1 * 1024 * 1024); super.addInput(new UniformPactRecordGenerator(keyCnt, valCnt, false), 1); super.addInput(new DelayingInfinitiveInputIterator(100), 2); super.addOutput(this.outList); final CrossTask<PactRecord, PactRecord, PactRecord> testTask = new CrossTask<PactRecord, PactRecord, PactRecord>(); super.getTaskConfig().setLocalStrategy(LocalStrategy.NESTEDLOOP_BLOCKED_OUTER_SECOND); super.getTaskConfig().setMemorySize(1 * 1024 * 1024); super.registerTask(testTask, MockCrossStub.class); Thread taskRunner = new Thread() { @Override public void run() { try { testTask.invoke(); } catch (Exception ie) { ie.printStackTrace(); Assert.fail("Task threw exception although it was properly canceled"); } } }; taskRunner.start(); TaskCancelThread tct = new TaskCancelThread(1, taskRunner, testTask); tct.start(); try { tct.join(); taskRunner.join(); } catch (InterruptedException ie) { Assert.fail("Joining threads failed"); } } @Test public void testCancelStreamCrossTaskInit() { int keyCnt = 10; int valCnt = 1; super.initEnvironment(1 * 1024 * 1024); super.addInput(new UniformPactRecordGenerator(keyCnt, valCnt, false), 1); super.addInput(new DelayingInfinitiveInputIterator(100), 2); super.addOutput(this.outList); final 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); Thread taskRunner = new Thread() { @Override public void run() { try { testTask.invoke(); } catch (Exception ie) { ie.printStackTrace(); Assert.fail("Task threw exception although it was properly canceled"); } } }; taskRunner.start(); TaskCancelThread tct = new TaskCancelThread(1, taskRunner, testTask); tct.start(); try { tct.join(); taskRunner.join(); } catch (InterruptedException ie) { Assert.fail("Joining threads failed"); } } @Test public void testCancelStreamCrossTaskCrossing() { int keyCnt = 10; int valCnt = 1; super.initEnvironment(1 * 1024 * 1024); super.addInput(new UniformPactRecordGenerator(keyCnt, valCnt, false), 1); super.addInput(new DelayingInfinitiveInputIterator(100), 2); super.addOutput(this.outList); final CrossTask<PactRecord, PactRecord, PactRecord> testTask = new CrossTask<PactRecord, PactRecord, PactRecord>(); super.getTaskConfig().setLocalStrategy(LocalStrategy.NESTEDLOOP_STREAMED_OUTER_SECOND); super.getTaskConfig().setMemorySize(1 * 1024 * 1024); super.registerTask(testTask, MockCrossStub.class); Thread taskRunner = new Thread() { @Override public void run() { try { testTask.invoke(); } catch (Exception ie) { ie.printStackTrace(); Assert.fail("Task threw exception although it was properly canceled"); } } }; taskRunner.start(); TaskCancelThread tct = new TaskCancelThread(1, taskRunner, testTask); tct.start(); try { tct.join(); taskRunner.join(); } catch (InterruptedException ie) { Assert.fail("Joining threads failed"); } } public static class MockCrossStub extends CrossStub { @Override public void cross(PactRecord record1, PactRecord record2, Collector<PactRecord> out) { out.collect(record1); } } public static class MockFailingCrossStub extends CrossStub { int cnt = 0; @Override public void cross(PactRecord record1, PactRecord record2, Collector<PactRecord> out) { if (++this.cnt >= 10) { throw new RuntimeException("Expected Test Exception"); } out.collect(record1); } } }