| /** |
| * 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.hadoop.streaming; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * Tests if StreamXmlRecordReader will read the next record, _after_ the |
| * end of a split if the split falls before the end of end-tag of a record. |
| * Also tests if StreamXmlRecordReader will read a record twice if end of a |
| * split is after few characters after the end-tag of a record but before the |
| * begin-tag of next record. |
| */ |
| public class TestStreamXmlMultipleRecords extends TestStreaming |
| { |
| private static final Log LOG = LogFactory.getLog( |
| TestStreamXmlMultipleRecords.class); |
| |
| private boolean hasPerl = false; |
| private long blockSize; |
| private String isSlowMatch; |
| |
| // Our own configuration used for creating FileSystem object where |
| // fs.local.block.size is set to 60 OR 80. |
| // See 60th char in input. It is before the end of end-tag of a record. |
| // See 80th char in input. It is in between the end-tag of a record and |
| // the begin-tag of next record. |
| private Configuration conf = null; |
| |
| private String myPerlMapper = |
| "perl -n -a -e 'print join(\"\\n\", map { \"$_\\t1\" } @F), \"\\n\";'"; |
| private String myPerlReducer = |
| "perl -n -a -e '$freq{$F[0]}++; END { print \"is\\t$freq{is}\\n\"; }'"; |
| |
| public TestStreamXmlMultipleRecords() throws IOException { |
| super(); |
| |
| input = "<line>This is a single line,\nand it is containing multiple" + |
| " words.</line> <line>Only is appears more than" + |
| " once.</line>\n"; |
| outputExpect = "is\t3\n"; |
| |
| map = myPerlMapper; |
| reduce = myPerlReducer; |
| |
| hasPerl = UtilTest.hasPerlSupport(); |
| } |
| |
| @Override |
| @Before |
| public void setUp() throws IOException { |
| super.setUp(); |
| // Without this closeAll() call, setting of FileSystem block size is |
| // not effective and will be old block size set in earlier test. |
| FileSystem.closeAll(); |
| } |
| |
| // Set file system block size such that split falls |
| // (a) before the end of end-tag of a record (testStreamXmlMultiInner...) OR |
| // (b) between records(testStreamXmlMultiOuter...) |
| @Override |
| protected Configuration getConf() { |
| conf = new Configuration(); |
| conf.setLong("fs.local.block.size", blockSize); |
| return conf; |
| } |
| |
| @Override |
| protected String[] genArgs() { |
| args.add("-inputreader"); |
| args.add("StreamXmlRecordReader,begin=<line>,end=</line>,slowmatch=" + |
| isSlowMatch); |
| return super.genArgs(); |
| } |
| |
| /** |
| * Tests if StreamXmlRecordReader will read the next record, _after_ the |
| * end of a split if the split falls before the end of end-tag of a record. |
| * Tests with slowmatch=false. |
| * @throws Exception |
| */ |
| @Test |
| public void testStreamXmlMultiInnerFast() throws Exception { |
| if (hasPerl) { |
| blockSize = 60; |
| |
| isSlowMatch = "false"; |
| super.testCommandLine(); |
| } |
| else { |
| LOG.warn("No perl; skipping test."); |
| } |
| } |
| |
| /** |
| * Tests if StreamXmlRecordReader will read a record twice if end of a |
| * split is after few characters after the end-tag of a record but before the |
| * begin-tag of next record. |
| * Tests with slowmatch=false. |
| * @throws Exception |
| */ |
| @Test |
| public void testStreamXmlMultiOuterFast() throws Exception { |
| if (hasPerl) { |
| blockSize = 80; |
| |
| isSlowMatch = "false"; |
| super.testCommandLine(); |
| } |
| else { |
| LOG.warn("No perl; skipping test."); |
| } |
| } |
| |
| /** |
| * Tests if StreamXmlRecordReader will read the next record, _after_ the |
| * end of a split if the split falls before the end of end-tag of a record. |
| * Tests with slowmatch=true. |
| * @throws Exception |
| */ |
| @Test |
| public void testStreamXmlMultiInnerSlow() throws Exception { |
| if (hasPerl) { |
| blockSize = 60; |
| |
| isSlowMatch = "true"; |
| super.testCommandLine(); |
| } |
| else { |
| LOG.warn("No perl; skipping test."); |
| } |
| } |
| |
| /** |
| * Tests if StreamXmlRecordReader will read a record twice if end of a |
| * split is after few characters after the end-tag of a record but before the |
| * begin-tag of next record. |
| * Tests with slowmatch=true. |
| * @throws Exception |
| */ |
| @Test |
| public void testStreamXmlMultiOuterSlow() throws Exception { |
| if (hasPerl) { |
| blockSize = 80; |
| |
| isSlowMatch = "true"; |
| super.testCommandLine(); |
| } |
| else { |
| LOG.warn("No perl; skipping test."); |
| } |
| } |
| |
| @Override |
| @Test |
| public void testCommandLine() { |
| // Do nothing |
| } |
| } |