| /** |
| * 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 static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| import org.apache.hadoop.hbase.Waiter.ExplainingPredicate; |
| import org.apache.hadoop.hbase.client.AsyncConnection; |
| import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder; |
| import org.apache.hadoop.hbase.client.ConnectionFactory; |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.hadoop.hbase.client.TableDescriptor; |
| import org.apache.hadoop.hbase.client.TableDescriptorBuilder; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.apache.hadoop.hbase.testclassification.MiscTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category({ MiscTests.class, MediumTests.class }) |
| public class TestSplitMerge { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestSplitMerge.class); |
| |
| private static final HBaseTestingUtility UTIL = new HBaseTestingUtility(); |
| |
| @BeforeClass |
| public static void setUp() throws Exception { |
| UTIL.getConfiguration().setInt(HConstants.HBASE_CLIENT_META_OPERATION_TIMEOUT, 1000); |
| UTIL.getConfiguration().setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 2); |
| UTIL.startMiniCluster(1); |
| } |
| |
| @AfterClass |
| public static void tearDown() throws Exception { |
| UTIL.shutdownMiniCluster(); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| TableName tableName = TableName.valueOf("SplitMerge"); |
| byte[] family = Bytes.toBytes("CF"); |
| TableDescriptor td = TableDescriptorBuilder.newBuilder(tableName) |
| .setColumnFamily(ColumnFamilyDescriptorBuilder.of(family)).build(); |
| UTIL.getAdmin().createTable(td, new byte[][] { Bytes.toBytes(1) }); |
| UTIL.waitTableAvailable(tableName); |
| UTIL.getAdmin().split(tableName, Bytes.toBytes(2)); |
| UTIL.waitFor(30000, new ExplainingPredicate<Exception>() { |
| |
| @Override |
| public boolean evaluate() throws Exception { |
| return UTIL.getMiniHBaseCluster().getRegions(tableName).size() == 3; |
| } |
| |
| @Override |
| public String explainFailure() throws Exception { |
| return "Split has not finished yet"; |
| } |
| }); |
| UTIL.waitUntilNoRegionsInTransition(); |
| RegionInfo regionA = null; |
| RegionInfo regionB = null; |
| for (RegionInfo region : UTIL.getAdmin().getRegions(tableName)) { |
| if (region.getStartKey().length == 0) { |
| regionA = region; |
| } else if (Bytes.equals(region.getStartKey(), Bytes.toBytes(1))) { |
| regionB = region; |
| } |
| } |
| assertNotNull(regionA); |
| assertNotNull(regionB); |
| UTIL.getAdmin().mergeRegionsAsync(regionA.getRegionName(), regionB.getRegionName(), false) |
| .get(30, TimeUnit.SECONDS); |
| assertEquals(2, UTIL.getAdmin().getRegions(tableName).size()); |
| |
| ServerName expected = UTIL.getMiniHBaseCluster().getRegionServer(0).getServerName(); |
| assertEquals(expected, UTIL.getConnection().getRegionLocator(tableName) |
| .getRegionLocation(Bytes.toBytes(1), true).getServerName()); |
| try (AsyncConnection asyncConn = |
| ConnectionFactory.createAsyncConnection(UTIL.getConfiguration()).get()) { |
| assertEquals(expected, asyncConn.getRegionLocator(tableName) |
| .getRegionLocation(Bytes.toBytes(1), true).get().getServerName()); |
| } |
| } |
| |
| @Test |
| public void testMergeRegionOrder() throws Exception { |
| int regionCount= 20; |
| |
| TableName tableName = TableName.valueOf("MergeRegionOrder"); |
| byte[] family = Bytes.toBytes("CF"); |
| TableDescriptor td = TableDescriptorBuilder.newBuilder(tableName) |
| .setColumnFamily(ColumnFamilyDescriptorBuilder.of(family)).build(); |
| |
| byte[][] splitKeys = new byte[regionCount-1][]; |
| |
| for (int c = 0; c < regionCount-1; c++) { |
| splitKeys[c] = Bytes.toBytes(c+1 * 1000); |
| } |
| |
| UTIL.getAdmin().createTable(td, splitKeys); |
| UTIL.waitTableAvailable(tableName); |
| |
| List<RegionInfo> regions = UTIL.getAdmin().getRegions(tableName); |
| |
| byte[][] regionNames = new byte[regionCount][]; |
| for (int c = 0; c < regionCount; c++) { |
| regionNames[c] = regions.get(c).getRegionName(); |
| } |
| |
| UTIL.getAdmin().mergeRegionsAsync(regionNames, false).get(60, TimeUnit.SECONDS); |
| |
| List<RegionInfo> mergedRegions = |
| MetaTableAccessor.getTableRegions(UTIL.getConnection(), tableName); |
| |
| assertEquals(1, mergedRegions.size()); |
| |
| RegionInfo mergedRegion = mergedRegions.get(0); |
| |
| List<RegionInfo> mergeParentRegions = MetaTableAccessor.getMergeRegions(UTIL.getConnection(), |
| mergedRegion.getRegionName()); |
| |
| assertEquals(mergeParentRegions.size(), regionCount); |
| |
| for (int c = 0; c < regionCount - 1; c++) { |
| assertTrue(Bytes.compareTo(mergeParentRegions.get(c).getStartKey(), |
| mergeParentRegions.get(c + 1).getStartKey()) < 0); |
| } |
| } |
| } |