| /** |
| * Copyright 2007 The Apache Software Foundation |
| * |
| * 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.hbase; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.hbase.regionserver.HRegion; |
| import org.apache.hadoop.hbase.util.Bytes; |
| |
| /** |
| * Utility class to build a table of multiple regions. |
| */ |
| public class MultiRegionTable extends HBaseClusterTestCase { |
| protected static final byte [][] KEYS = { |
| HConstants.EMPTY_BYTE_ARRAY, |
| Bytes.toBytes("bbb"), |
| Bytes.toBytes("ccc"), |
| Bytes.toBytes("ddd"), |
| Bytes.toBytes("eee"), |
| Bytes.toBytes("fff"), |
| Bytes.toBytes("ggg"), |
| Bytes.toBytes("hhh"), |
| Bytes.toBytes("iii"), |
| Bytes.toBytes("jjj"), |
| Bytes.toBytes("kkk"), |
| Bytes.toBytes("lll"), |
| Bytes.toBytes("mmm"), |
| Bytes.toBytes("nnn"), |
| Bytes.toBytes("ooo"), |
| Bytes.toBytes("ppp"), |
| Bytes.toBytes("qqq"), |
| Bytes.toBytes("rrr"), |
| Bytes.toBytes("sss"), |
| Bytes.toBytes("ttt"), |
| Bytes.toBytes("uuu"), |
| Bytes.toBytes("vvv"), |
| Bytes.toBytes("www"), |
| Bytes.toBytes("xxx"), |
| Bytes.toBytes("yyy") |
| }; |
| |
| protected final byte [] columnFamily; |
| protected HTableDescriptor desc; |
| |
| /** |
| * @param familyName the family to populate. |
| */ |
| public MultiRegionTable(final String familyName) { |
| this(1, familyName); |
| } |
| |
| public MultiRegionTable(int nServers, final String familyName) { |
| super(nServers); |
| |
| this.columnFamily = Bytes.toBytes(familyName); |
| // These are needed for the new and improved Map/Reduce framework |
| System.setProperty("hadoop.log.dir", conf.get("hadoop.log.dir")); |
| conf.set("mapred.output.dir", conf.get("hadoop.tmp.dir")); |
| } |
| |
| /** |
| * Run after dfs is ready but before hbase cluster is started up. |
| */ |
| @Override |
| protected void preHBaseClusterSetup() throws Exception { |
| try { |
| // Create a bunch of regions |
| HRegion[] regions = new HRegion[KEYS.length]; |
| for (int i = 0; i < regions.length; i++) { |
| int j = (i + 1) % regions.length; |
| regions[i] = createARegion(KEYS[i], KEYS[j]); |
| } |
| |
| // Now create the root and meta regions and insert the data regions |
| // created above into the meta |
| |
| createRootAndMetaRegions(); |
| |
| for(int i = 0; i < regions.length; i++) { |
| HRegion.addRegionToMETA(meta, regions[i]); |
| } |
| |
| closeRootAndMeta(); |
| } catch (Exception e) { |
| shutdownDfs(dfsCluster); |
| throw e; |
| } |
| } |
| |
| private HRegion createARegion(byte [] startKey, byte [] endKey) throws IOException { |
| HRegion region = createNewHRegion(desc, startKey, endKey); |
| addContent(region, this.columnFamily); |
| closeRegionAndDeleteLog(region); |
| return region; |
| } |
| |
| private void closeRegionAndDeleteLog(HRegion region) throws IOException { |
| region.close(); |
| region.getLog().closeAndDelete(); |
| } |
| } |