| /** |
| * 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.mapred; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.mapred.lib.CombineFileInputFormat; |
| import org.apache.hadoop.mapred.lib.CombineFileSplit; |
| import org.apache.hadoop.mapred.lib.CombineFileRecordReader; |
| |
| import org.junit.Test; |
| import static junit.framework.Assert.*; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| public class TestCombineFileInputFormat { |
| private static final Log LOG = |
| LogFactory.getLog(TestCombineFileInputFormat.class.getName()); |
| |
| private static JobConf defaultConf = new JobConf(); |
| private static FileSystem localFs = null; |
| static { |
| try { |
| defaultConf.set("fs.default.name", "file:///"); |
| localFs = FileSystem.getLocal(defaultConf); |
| } catch (IOException e) { |
| throw new RuntimeException("init failure", e); |
| } |
| } |
| private static Path workDir = |
| new Path(new Path(System.getProperty("test.build.data", "/tmp")), |
| "TestCombineFileInputFormat").makeQualified(localFs); |
| |
| private static void writeFile(FileSystem fs, Path name, |
| String contents) throws IOException { |
| OutputStream stm; |
| stm = fs.create(name); |
| stm.write(contents.getBytes()); |
| stm.close(); |
| } |
| |
| /** |
| * Test getSplits |
| */ |
| @Test |
| @SuppressWarnings("unchecked") |
| public void testSplits() throws IOException { |
| JobConf job = new JobConf(defaultConf); |
| localFs.delete(workDir, true); |
| writeFile(localFs, new Path(workDir, "test.txt"), |
| "the quick\nbrown\nfox jumped\nover\n the lazy\n dog\n"); |
| FileInputFormat.setInputPaths(job, workDir); |
| CombineFileInputFormat format = new CombineFileInputFormat() { |
| @Override |
| public RecordReader getRecordReader(InputSplit split, JobConf job, Reporter reporter) throws IOException { |
| return new CombineFileRecordReader(job, (CombineFileSplit)split, reporter, CombineFileRecordReader.class); |
| } |
| }; |
| final int SIZE_SPLITS = 1; |
| LOG.info("Trying to getSplits with splits = " + SIZE_SPLITS); |
| InputSplit[] splits = format.getSplits(job, SIZE_SPLITS); |
| LOG.info("Got getSplits = " + splits.length); |
| assertEquals("splits == " + SIZE_SPLITS, SIZE_SPLITS, splits.length); |
| } |
| } |