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.test.contracts; import java.io.FileNotFoundException; import java.io.IOException; import java.util.Collection; import java.util.LinkedList; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.junit.runner.RunWith; import org.junit.runners.Parameterized; import org.junit.runners.Parameterized.Parameters; import eu.stratosphere.nephele.configuration.Configuration; import eu.stratosphere.nephele.jobgraph.JobGraph; import eu.stratosphere.pact.common.contract.FileDataSink; import eu.stratosphere.pact.common.contract.FileDataSource; import eu.stratosphere.pact.common.contract.MatchContract; import eu.stratosphere.pact.common.io.DelimitedInputFormat; import eu.stratosphere.pact.common.plan.Plan; import eu.stratosphere.pact.common.stubs.Collector; import eu.stratosphere.pact.common.stubs.MatchStub; import eu.stratosphere.pact.common.type.PactRecord; import eu.stratosphere.pact.common.type.base.PactInteger; import eu.stratosphere.pact.common.type.base.PactString; import eu.stratosphere.pact.compiler.DataStatistics; import eu.stratosphere.pact.compiler.PactCompiler; import eu.stratosphere.pact.compiler.plan.candidate.OptimizedPlan; import eu.stratosphere.pact.compiler.plantranslate.NepheleJobGraphGenerator; import eu.stratosphere.pact.test.contracts.io.ContractITCaseIOFormats.ContractITCaseInputFormat; import eu.stratosphere.pact.test.contracts.io.ContractITCaseIOFormats.ContractITCaseOutputFormat; import eu.stratosphere.pact.test.util.TestBase; /** * @author Fabian Hueske */ @RunWith(Parameterized.class) public class MatchITCase extends TestBase { private static final Log LOG = LogFactory.getLog(MatchITCase.class); public MatchITCase(String clusterConfig, Configuration testConfig) { super(testConfig, clusterConfig); } private static final String MATCH_LEFT_IN_1 = "1 1\n2 2\n3 3\n4 4\n"; private static final String MATCH_LEFT_IN_2 = "1 2\n2 3\n3 4\n4 5\n"; private static final String MATCH_LEFT_IN_3 = "1 3\n2 4\n3 5\n4 6\n"; private static final String MATCH_LEFT_IN_4 = "1 4\n2 5\n3 6\n4 7\n"; private static final String MATCH_RIGHT_IN_1 = "1 1\n2 2\n3 3\n5 1\n"; private static final String MATCH_RIGHT_IN_2 = "1 1\n2 2\n3 3\n6 1\n"; private static final String MATCH_RIGHT_IN_3 = "1 1\n2 2\n2 2\n7 1\n"; private static final String MATCH_RIGHT_IN_4 = "1 1\n2 2\n2 2\n8 1\n"; // private static final String MATCH_RESULT = "1 0\n1 0\n1 0\n1 0\n1 1\n1 1\n1 1\n1 1\n1 2\n1 2\n1 2\n1 2\n1 3\n1 3\n1 3\n1 3\n" // + "3 0\n3 0\n3 1\n3 1\n3 2\n3 2\n3 3\n3 3\n" // + "2 0\n2 1\n2 2\n2 3\n2 0\n2 1\n2 2\n2 3\n2 0\n2 1\n2 2\n2 3\n2 0\n2 1\n2 2\n2 3\n2 0\n2 1\n2 2\n2 3\n2 0\n2 1\n2 2\n2 3\n"; private static final String MATCH_RESULT = "2 1\n2 1\n2 1\n2 1\n2 2\n2 2\n2 2\n2 2\n2 3\n2 3\n2 3\n2 3\n2 4\n2 4\n2 4\n2 4\n" + "4 1\n4 1\n4 2\n4 2\n4 3\n4 3\n4 4\n4 4\n" + "3 1\n3 2\n3 3\n3 4\n3 1\n3 2\n3 3\n3 4\n3 1\n3 2\n3 3\n3 4\n3 1\n3 2\n3 3\n3 4\n3 1\n3 2\n3 3\n3 4\n3 1\n3 2\n3 3\n3 4\n"; @Override protected void preSubmit() throws Exception { String tempPath = getFilesystemProvider().getTempDirPath(); getFilesystemProvider().createDir(tempPath + "/match_left"); getFilesystemProvider().createFile(tempPath + "/match_left/matchTest_1.txt", MATCH_LEFT_IN_1); getFilesystemProvider().createFile(tempPath + "/match_left/matchTest_2.txt", MATCH_LEFT_IN_2); getFilesystemProvider().createFile(tempPath + "/match_left/matchTest_3.txt", MATCH_LEFT_IN_3); getFilesystemProvider().createFile(tempPath + "/match_left/matchTest_4.txt", MATCH_LEFT_IN_4); getFilesystemProvider().createDir(tempPath + "/match_right"); getFilesystemProvider().createFile(tempPath + "/match_right/matchTest_1.txt", MATCH_RIGHT_IN_1); getFilesystemProvider().createFile(tempPath + "/match_right/matchTest_2.txt", MATCH_RIGHT_IN_2); getFilesystemProvider().createFile(tempPath + "/match_right/matchTest_3.txt", MATCH_RIGHT_IN_3); getFilesystemProvider().createFile(tempPath + "/match_right/matchTest_4.txt", MATCH_RIGHT_IN_4); } public static class TestMatcher extends MatchStub { private PactString keyString = new PactString(); private PactString valueString = new PactString(); @Override public void match(PactRecord value1, PactRecord value2, Collector<PactRecord> out) throws Exception { keyString = value1.getField(0, keyString); keyString.setValue("" + (Integer.parseInt(keyString.getValue()) + 1)); value1.setField(0, keyString); valueString = value1.getField(1, valueString); int val1 = Integer.parseInt(valueString.getValue()) + 2; valueString = value2.getField(1, valueString); int val2 = Integer.parseInt(valueString.getValue()) + 1; value1.setField(1, new PactInteger(val1 - val2)); out.collect(value1); if (LOG.isDebugEnabled()) LOG.debug("Processed: [" + keyString.toString() + "," + val1 + "] + " + "[" + keyString.toString() + "," + val2 + "]"); } } @Override protected JobGraph getJobGraph() throws Exception { String pathPrefix = getFilesystemProvider().getURIPrefix() + getFilesystemProvider().getTempDirPath(); FileDataSource input_left = new FileDataSource(ContractITCaseInputFormat.class, pathPrefix + "/match_left"); DelimitedInputFormat.configureDelimitedFormat(input_left).recordDelimiter('\n'); input_left.setDegreeOfParallelism(config.getInteger("MatchTest#NoSubtasks", 1)); FileDataSource input_right = new FileDataSource(ContractITCaseInputFormat.class, pathPrefix + "/match_right"); DelimitedInputFormat.configureDelimitedFormat(input_right).recordDelimiter('\n'); input_right.setDegreeOfParallelism(config.getInteger("MatchTest#NoSubtasks", 1)); MatchContract testMatcher = MatchContract.builder(TestMatcher.class, PactString.class, 0, 0).build(); testMatcher.setDegreeOfParallelism(config.getInteger("MatchTest#NoSubtasks", 1)); testMatcher.getParameters().setString(PactCompiler.HINT_LOCAL_STRATEGY, config.getString("MatchTest#LocalStrategy", "")); if (config.getString("MatchTest#ShipStrategy", "").equals("BROADCAST_FIRST")) { testMatcher.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY_FIRST_INPUT, PactCompiler.HINT_SHIP_STRATEGY_BROADCAST); testMatcher.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY_SECOND_INPUT, PactCompiler.HINT_SHIP_STRATEGY_FORWARD); } else if (config.getString("MatchTest#ShipStrategy", "").equals("BROADCAST_SECOND")) { testMatcher.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY_FIRST_INPUT, PactCompiler.HINT_SHIP_STRATEGY_FORWARD); testMatcher.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY_SECOND_INPUT, PactCompiler.HINT_SHIP_STRATEGY_BROADCAST); } else { testMatcher.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY, config.getString("MatchTest#ShipStrategy", "")); } FileDataSink output = new FileDataSink(ContractITCaseOutputFormat.class, pathPrefix + "/result.txt"); output.setDegreeOfParallelism(1); output.addInput(testMatcher); testMatcher.addFirstInput(input_left); testMatcher.addSecondInput(input_right); Plan plan = new Plan(output); PactCompiler pc = new PactCompiler(new DataStatistics()); OptimizedPlan op = pc.compile(plan); NepheleJobGraphGenerator jgg = new NepheleJobGraphGenerator(); return jgg.compileJobGraph(op); } @Override protected void postSubmit() throws Exception { String tempPath = getFilesystemProvider().getTempDirPath(); compareResultsByLinesInMemory(MATCH_RESULT, tempPath + "/result.txt"); getFilesystemProvider().delete(tempPath + "/result.txt", true); getFilesystemProvider().delete(tempPath + "/match_left", true); getFilesystemProvider().delete(tempPath + "/match_right", true); } @Parameters public static Collection<Object[]> getConfigurations() throws FileNotFoundException, IOException { LinkedList<Configuration> tConfigs = new LinkedList<Configuration>(); String[] localStrategies = { PactCompiler.HINT_LOCAL_STRATEGY_SORT_BOTH_MERGE, PactCompiler.HINT_LOCAL_STRATEGY_HASH_BUILD_FIRST, PactCompiler.HINT_LOCAL_STRATEGY_HASH_BUILD_SECOND }; String[] shipStrategies = { PactCompiler.HINT_SHIP_STRATEGY_REPARTITION_HASH, "BROADCAST_FIRST", "BROADCAST_SECOND" }; for (String localStrategy : localStrategies) { for (String shipStrategy : shipStrategies) { Configuration config = new Configuration(); config.setString("MatchTest#LocalStrategy", localStrategy); config.setString("MatchTest#ShipStrategy", shipStrategy); config.setInteger("MatchTest#NoSubtasks", 4); tConfigs.add(config); } } return toParameterList(MatchITCase.class, tConfigs); } }