| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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.apache.pig.test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Iterator; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.pig.ExecType; |
| import org.apache.pig.PigServer; |
| import org.apache.pig.data.Tuple; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| public class TestPigSplit { |
| |
| protected final Log log = LogFactory.getLog(getClass()); |
| |
| private static MiniGenericCluster cluster = MiniGenericCluster.buildCluster(); |
| private static ExecType[] execTypes; |
| protected PigServer pigServer; |
| |
| /** |
| * filename of input in each of the tests |
| */ |
| String inputFileName; |
| |
| @BeforeClass |
| public static void oneTimeSetup() throws Exception { |
| execTypes = new ExecType[] { cluster.getExecType(), Util.getLocalTestMode() }; |
| } |
| |
| @AfterClass |
| public static void oneTimeTearDown() throws Exception { |
| if (cluster != null) |
| cluster.shutDown(); |
| } |
| |
| public void setUp(ExecType execType) throws Exception { |
| Util.resetStateForExecModeSwitch(); |
| if (execType == cluster.getExecType()) { |
| pigServer = new PigServer(cluster.getExecType(), cluster.getProperties()); |
| } else { |
| pigServer = new PigServer(Util.getLocalTestMode()); |
| } |
| } |
| |
| private void createInput(String[] data, ExecType execType) throws IOException { |
| if (execType == cluster.getExecType()) { |
| Util.createInputFile(cluster, inputFileName, data); |
| } else if (execType.isLocal()) { |
| Util.createLocalInputFile(inputFileName, data); |
| } else { |
| throw new IOException("unknown exectype:" + execType.toString()); |
| } |
| } |
| |
| public void tearDown(ExecType execType) throws Exception { |
| if (execType == cluster.getExecType()) { |
| Util.deleteFile(cluster, inputFileName); |
| } else if (execType.isLocal()) { |
| new File(inputFileName).delete(); |
| } else { |
| throw new IOException("unknown exectype:" + execType.toString()); |
| } |
| pigServer.shutdown(); |
| } |
| |
| @Test |
| public void testLongEvalSpec2() throws Exception { |
| inputFileName = "notestLongEvalSpec-input.txt"; |
| for (ExecType execType : execTypes) { |
| try { |
| setUp(execType); |
| createInput(new String[] { "0\ta" }, execType); |
| pigServer.registerQuery("a = load '" + inputFileName + "';"); |
| for (int i = 0; i < 200; i++) { |
| pigServer.registerQuery("a = filter a by $0 == '1';"); |
| } |
| Iterator<Tuple> iter = pigServer.openIterator("a"); |
| assertFalse(iter.hasNext()); |
| } finally { |
| tearDown(execType); |
| } |
| } |
| } |
| |
| @Test |
| public void testSchemaWithSplit() throws Exception { |
| inputFileName = "testSchemaWithSplit-input.txt"; |
| String[] input = { "2", "12", "42" }; |
| for (ExecType execType : execTypes) { |
| try { |
| setUp(execType); |
| createInput(input, execType); |
| pigServer.registerQuery("a = load '" + inputFileName |
| + "' as (value:chararray);"); |
| pigServer |
| .registerQuery("split a into b if value < '20', c if value > '10';"); |
| pigServer.registerQuery("b1 = order b by value;"); |
| pigServer.registerQuery("c1 = order c by value;"); |
| |
| // order in lexicographic, so 12 comes before 2 |
| Iterator<Tuple> iter = pigServer.openIterator("b1"); |
| assertTrue("b1 has an element", iter.hasNext()); |
| assertEquals("first item in b1", "12", iter.next().get(0)); |
| assertTrue("b1 has an element", iter.hasNext()); |
| assertEquals("second item in b1", "2", iter.next().get(0)); |
| assertFalse("b1 is over", iter.hasNext()); |
| |
| iter = pigServer.openIterator("c1"); |
| assertTrue("c1 has an element", iter.hasNext()); |
| assertEquals("first item in c1", "12", iter.next().get(0)); |
| assertTrue("c1 has an element", iter.hasNext()); |
| assertEquals("second item in c1", "2", iter.next().get(0)); |
| assertTrue("c1 has an element", iter.hasNext()); |
| assertEquals("third item in c1", "42", iter.next().get(0)); |
| assertFalse("c1 is over", iter.hasNext()); |
| } finally { |
| tearDown(execType); |
| } |
| } |
| } |
| |
| @Test |
| public void testLongEvalSpec() throws Exception { |
| inputFileName = "testLongEvalSpec-input.txt"; |
| String[] input = new String[500]; |
| for (int i = 0; i < 500; i++) { |
| input[i] = ("0\ta"); |
| } |
| for (ExecType execType : execTypes) { |
| try { |
| setUp(execType); |
| createInput(input, execType); |
| pigServer.registerQuery("a = load '" + inputFileName + "';"); |
| pigServer.registerQuery("a = filter a by $0 == '1';"); |
| |
| Iterator<Tuple> iter = pigServer.openIterator("a"); |
| assertFalse(iter.hasNext()); |
| } finally { |
| tearDown(execType); |
| } |
| } |
| } |
| } |