| /* |
| * 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.assertFalse; |
| |
| import java.io.IOException; |
| import java.util.Iterator; |
| |
| import org.apache.pig.PigServer; |
| import org.apache.pig.data.Tuple; |
| import org.junit.AfterClass; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * Test cases to test join statement |
| */ |
| |
| public class TestJoin extends TestJoinBase { |
| private static MiniGenericCluster cluster = MiniGenericCluster.buildCluster(); |
| |
| @AfterClass |
| public static void oneTimeTearDown() throws Exception { |
| if (cluster != null) cluster.shutDown(); |
| } |
| |
| @Before |
| public void setUp() throws Exception { |
| pigServer = new PigServer(cluster.getExecType(), cluster.getProperties()); |
| } |
| |
| protected String createInputFile(String fileNameHint, String[] data) throws IOException { |
| String fileName = ""; |
| Util.createInputFile(cluster, fileNameHint, data); |
| fileName = fileNameHint; |
| return fileName; |
| } |
| |
| protected void deleteInputFile(String fileName) throws Exception { |
| Util.deleteFile(cluster, fileName); |
| } |
| |
| @Test |
| public void testJoinWithMissingFieldsInTuples() throws Exception{ |
| String[] input1 = { |
| "ff ff ff", |
| "", |
| "", |
| "", |
| "", |
| "ff ff ff", |
| "", |
| "" |
| }; |
| String[] input2 = { |
| "", |
| "", |
| "", |
| "", |
| "" |
| }; |
| |
| String firstInput = createInputFile("a.txt", input1); |
| String secondInput = createInputFile("b.txt", input2); |
| String script = "a = load 'a.txt' using PigStorage(' ');" + |
| "b = load 'b.txt' using PigStorage('\u0001');" + |
| "c = join a by $0, b by $0;"; |
| Util.registerMultiLineQuery(pigServer, script); |
| Iterator<Tuple> it = pigServer.openIterator("c"); |
| assertFalse(it.hasNext()); |
| deleteInputFile(firstInput); |
| deleteInputFile(secondInput); |
| } |
| } |