Java tutorial
/** * Tencent is pleased to support the open source community by making TDW available. * Copyright (C) 2014 THL A29 Limited, a Tencent company. All rights reserved. * 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. */ import java.io.IOException; import junit.framework.TestCase; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileStatus; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import IndexService.IndexMergeMR; import IndexStorage.IFormatDataFile; import unittest.testIndexStorage.TestUtil; public class TestIndexMergeMR extends TestCase { public void testIndexMergeMR() throws IOException { Configuration conf = new Configuration(); FileSystem fs = FileSystem.get(conf); String indexdir = "indexdir"; String indexdir1 = "indexdir1"; int filenum = 10; int recnum = 1000; short idx = 0; TestUtil.genifdfindex(indexdir, filenum, recnum, idx, true); StringBuffer sb = new StringBuffer(); FileStatus[] ss = fs.listStatus(new Path(indexdir)); for (FileStatus fileStatus : ss) { sb.append(fileStatus.getPath().toString()).append(","); } IndexMergeMR.running(sb.substring(0, sb.length() - 1), indexdir1, conf); IFormatDataFile ifdf = new IFormatDataFile(conf); ifdf.open(indexdir1 + "/part-00000"); for (int i = 0; i < 100; i++) { ifdf.next().show(); } ifdf.close(); fs.delete(new Path(indexdir), true); fs.delete(new Path(indexdir1), true); } }