001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.master.janitor; 019 020import static org.junit.Assert.assertFalse; 021import static org.junit.Assert.assertNotNull; 022import static org.junit.Assert.assertTrue; 023 024import java.io.IOException; 025import java.util.ArrayList; 026import java.util.List; 027import java.util.concurrent.ExecutionException; 028import org.apache.hadoop.hbase.HBaseClassTestRule; 029import org.apache.hadoop.hbase.HBaseTestingUtility; 030import org.apache.hadoop.hbase.HRegionLocation; 031import org.apache.hadoop.hbase.MetaMockingUtil; 032import org.apache.hadoop.hbase.MetaTableAccessor; 033import org.apache.hadoop.hbase.TableName; 034import org.apache.hadoop.hbase.TableNameTestRule; 035import org.apache.hadoop.hbase.Waiter; 036import org.apache.hadoop.hbase.client.Admin; 037import org.apache.hadoop.hbase.client.Connection; 038import org.apache.hadoop.hbase.client.ConnectionFactory; 039import org.apache.hadoop.hbase.client.Get; 040import org.apache.hadoop.hbase.client.RegionInfo; 041import org.apache.hadoop.hbase.client.RegionLocator; 042import org.apache.hadoop.hbase.client.Result; 043import org.apache.hadoop.hbase.client.Table; 044import org.apache.hadoop.hbase.master.HMaster; 045import org.apache.hadoop.hbase.master.ServerManager; 046import org.apache.hadoop.hbase.master.assignment.AssignmentManager; 047import org.apache.hadoop.hbase.master.assignment.GCRegionProcedure; 048import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv; 049import org.apache.hadoop.hbase.procedure2.Procedure; 050import org.apache.hadoop.hbase.procedure2.ProcedureExecutor; 051import org.apache.hadoop.hbase.testclassification.MasterTests; 052import org.apache.hadoop.hbase.testclassification.MediumTests; 053import org.apache.hadoop.hbase.util.Bytes; 054import org.apache.hadoop.hbase.util.EnvironmentEdgeManager; 055import org.apache.hadoop.hbase.util.PairOfSameType; 056import org.apache.hadoop.hbase.util.Threads; 057import org.junit.AfterClass; 058import org.junit.BeforeClass; 059import org.junit.ClassRule; 060import org.junit.Rule; 061import org.junit.Test; 062import org.junit.experimental.categories.Category; 063import org.slf4j.Logger; 064import org.slf4j.LoggerFactory; 065 066@Category({ MasterTests.class, MediumTests.class }) 067public class TestCatalogJanitorInMemoryStates { 068 069 @ClassRule 070 public static final HBaseClassTestRule CLASS_RULE = 071 HBaseClassTestRule.forClass(TestCatalogJanitorInMemoryStates.class); 072 073 private static final Logger LOG = LoggerFactory.getLogger(TestCatalogJanitorInMemoryStates.class); 074 075 private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); 076 077 private static byte[] FAMILY = Bytes.toBytes("testFamily"); 078 079 @Rule 080 public final TableNameTestRule name = new TableNameTestRule(); 081 082 @BeforeClass 083 public static void setUpBeforeClass() throws Exception { 084 TEST_UTIL.startMiniCluster(1); 085 } 086 087 @AfterClass 088 public static void tearDownAfterClass() throws Exception { 089 TEST_UTIL.shutdownMiniCluster(); 090 } 091 092 /** 093 * Test clearing a split parent from memory. 094 */ 095 @Test 096 public void testInMemoryParentCleanup() 097 throws IOException, InterruptedException, ExecutionException { 098 HMaster master = TEST_UTIL.getHBaseCluster().getMaster(); 099 final AssignmentManager am = master.getAssignmentManager(); 100 final ServerManager sm = master.getServerManager(); 101 102 Admin admin = TEST_UTIL.getAdmin(); 103 admin.enableCatalogJanitor(false); 104 105 final TableName tableName = name.getTableName(); 106 Table t = TEST_UTIL.createTable(tableName, FAMILY); 107 TEST_UTIL.loadTable(t, FAMILY, false); 108 109 RegionLocator locator = TEST_UTIL.getConnection().getRegionLocator(tableName); 110 List<HRegionLocation> allRegionLocations = locator.getAllRegionLocations(); 111 112 // We need to create a valid split with daughter regions 113 HRegionLocation parent = allRegionLocations.get(0); 114 List<HRegionLocation> daughters = splitRegion(parent.getRegionInfo()); 115 LOG.info("Parent region: " + parent); 116 LOG.info("Daughter regions: " + daughters); 117 assertNotNull("Should have found daughter regions for " + parent, daughters); 118 119 assertTrue("Parent region should exist in RegionStates", 120 am.getRegionStates().isRegionInRegionStates(parent.getRegion())); 121 assertTrue("Parent region should exist in ServerManager", 122 sm.isRegionInServerManagerStates(parent.getRegion())); 123 124 // clean the parent 125 Result r = MetaMockingUtil.getMetaTableRowResult(parent.getRegion(), null, 126 daughters.get(0).getRegion(), daughters.get(1).getRegion()); 127 CatalogJanitor.cleanParent(master, parent.getRegion(), r); 128 129 // wait for procedures to complete 130 Waiter.waitFor(TEST_UTIL.getConfiguration(), 10 * 1000, new Waiter.Predicate<Exception>() { 131 @Override 132 public boolean evaluate() throws Exception { 133 ProcedureExecutor<MasterProcedureEnv> pe = master.getMasterProcedureExecutor(); 134 for (Procedure<MasterProcedureEnv> proc : pe.getProcedures()) { 135 if (proc.getClass().isAssignableFrom(GCRegionProcedure.class) && proc.isFinished()) { 136 return true; 137 } 138 } 139 return false; 140 } 141 }); 142 143 assertFalse("Parent region should have been removed from RegionStates", 144 am.getRegionStates().isRegionInRegionStates(parent.getRegion())); 145 assertFalse("Parent region should have been removed from ServerManager", 146 sm.isRegionInServerManagerStates(parent.getRegion())); 147 148 } 149 150 /** 151 * Splits a region 152 * @param r Region to split. 153 * @return List of region locations 154 */ 155 private List<HRegionLocation> splitRegion(final RegionInfo r) 156 throws IOException, InterruptedException, ExecutionException { 157 List<HRegionLocation> locations = new ArrayList<>(); 158 // Split this table in two. 159 Admin admin = TEST_UTIL.getAdmin(); 160 Connection connection = TEST_UTIL.getConnection(); 161 admin.splitRegionAsync(r.getEncodedNameAsBytes()).get(); 162 admin.close(); 163 PairOfSameType<RegionInfo> regions = waitOnDaughters(r); 164 if (regions != null) { 165 try (RegionLocator rl = connection.getRegionLocator(r.getTable())) { 166 locations.add(rl.getRegionLocation(regions.getFirst().getEncodedNameAsBytes())); 167 locations.add(rl.getRegionLocation(regions.getSecond().getEncodedNameAsBytes())); 168 } 169 return locations; 170 } 171 return locations; 172 } 173 174 /* 175 * Wait on region split. May return because we waited long enough on the split and it didn't 176 * happen. Caller should check. n * @return Daughter regions; caller needs to check table actually 177 * split. 178 */ 179 private PairOfSameType<RegionInfo> waitOnDaughters(final RegionInfo r) throws IOException { 180 long start = EnvironmentEdgeManager.currentTime(); 181 PairOfSameType<RegionInfo> pair = null; 182 try (Connection conn = ConnectionFactory.createConnection(TEST_UTIL.getConfiguration()); 183 Table metaTable = conn.getTable(TableName.META_TABLE_NAME)) { 184 Result result = null; 185 RegionInfo region = null; 186 while ((EnvironmentEdgeManager.currentTime() - start) < 60000) { 187 result = metaTable.get(new Get(r.getRegionName())); 188 if (result == null) { 189 break; 190 } 191 region = MetaTableAccessor.getRegionInfo(result); 192 if (region.isSplitParent()) { 193 LOG.debug(region.toString() + " IS a parent!"); 194 pair = MetaTableAccessor.getDaughterRegions(result); 195 break; 196 } 197 Threads.sleep(100); 198 } 199 200 if (pair.getFirst() == null || pair.getSecond() == null) { 201 throw new IOException("Failed to get daughters, for parent region: " + r); 202 } 203 return pair; 204 } 205 } 206}