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.assignment; 019 020import static org.junit.Assert.assertEquals; 021 022import org.apache.hadoop.hbase.HBaseClassTestRule; 023import org.apache.hadoop.hbase.HBaseTestingUtility; 024import org.apache.hadoop.hbase.MiniHBaseCluster; 025import org.apache.hadoop.hbase.StartMiniClusterOption; 026import org.apache.hadoop.hbase.TableName; 027import org.apache.hadoop.hbase.Waiter; 028import org.apache.hadoop.hbase.client.Get; 029import org.apache.hadoop.hbase.client.RegionInfo; 030import org.apache.hadoop.hbase.client.Table; 031import org.apache.hadoop.hbase.regionserver.HRegionServer; 032import org.apache.hadoop.hbase.testclassification.MasterTests; 033import org.apache.hadoop.hbase.testclassification.MediumTests; 034import org.apache.hadoop.hbase.util.Bytes; 035import org.apache.hadoop.hbase.zookeeper.MiniZooKeeperCluster; 036import org.junit.After; 037import org.junit.Before; 038import org.junit.ClassRule; 039import org.junit.Rule; 040import org.junit.Test; 041import org.junit.experimental.categories.Category; 042import org.junit.rules.TestName; 043import org.slf4j.Logger; 044import org.slf4j.LoggerFactory; 045 046import org.apache.hbase.thirdparty.com.google.common.collect.Iterables; 047 048/** 049 * Testcase for HBASE-20792. 050 */ 051@Category({ MediumTests.class, MasterTests.class }) 052public class TestRegionMoveAndAbandon { 053 private static final Logger LOG = LoggerFactory.getLogger(TestRegionMoveAndAbandon.class); 054 055 @ClassRule 056 public static final HBaseClassTestRule CLASS_RULE = 057 HBaseClassTestRule.forClass(TestRegionMoveAndAbandon.class); 058 059 @Rule 060 public TestName name = new TestName(); 061 062 private HBaseTestingUtility UTIL; 063 private MiniHBaseCluster cluster; 064 private MiniZooKeeperCluster zkCluster; 065 private HRegionServer rs1; 066 private HRegionServer rs2; 067 private RegionInfo regionInfo; 068 069 @Before 070 public void setup() throws Exception { 071 UTIL = new HBaseTestingUtility(); 072 zkCluster = UTIL.startMiniZKCluster(); 073 StartMiniClusterOption option = StartMiniClusterOption.builder().numRegionServers(2).build(); 074 cluster = UTIL.startMiniHBaseCluster(option); 075 rs1 = cluster.getRegionServer(0); 076 rs2 = cluster.getRegionServer(1); 077 assertEquals(2, cluster.getRegionServerThreads().size()); 078 // We'll use hbase:namespace for our testing 079 UTIL.waitTableAvailable(TableName.NAMESPACE_TABLE_NAME, 30_000); 080 regionInfo = 081 Iterables.getOnlyElement(cluster.getRegions(TableName.NAMESPACE_TABLE_NAME)).getRegionInfo(); 082 } 083 084 @After 085 public void teardown() throws Exception { 086 if (cluster != null) { 087 cluster.shutdown(); 088 cluster = null; 089 } 090 if (zkCluster != null) { 091 zkCluster.shutdown(); 092 zkCluster = null; 093 } 094 } 095 096 @Test 097 public void test() throws Exception { 098 LOG.info("Moving {} to {}", regionInfo, rs2.getServerName()); 099 // Move to RS2 100 UTIL.moveRegionAndWait(regionInfo, rs2.getServerName()); 101 LOG.info("Moving {} to {}", regionInfo, rs1.getServerName()); 102 // Move to RS1 103 UTIL.moveRegionAndWait(regionInfo, rs1.getServerName()); 104 LOG.info("Killing RS {}", rs1.getServerName()); 105 // Stop RS1 106 cluster.killRegionServer(rs1.getServerName()); 107 UTIL.waitFor(30_000, () -> rs1.isStopped() && !rs1.isAlive()); 108 // Region should get moved to RS2 109 UTIL.waitTableAvailable(TableName.NAMESPACE_TABLE_NAME, 60_000); 110 // Restart the master 111 LOG.info("Killing master {}", cluster.getMaster().getServerName()); 112 cluster.killMaster(cluster.getMaster().getServerName()); 113 // Stop RS2 114 LOG.info("Killing RS {}", rs2.getServerName()); 115 cluster.killRegionServer(rs2.getServerName()); 116 UTIL.waitFor(30_000, () -> rs2.isStopped() && !rs2.isAlive()); 117 UTIL.waitFor(30_000, () -> rs1.isStopped() && !rs1.isAlive()); 118 // make sure none of regionserver threads is alive. 119 UTIL.waitFor(30_000, () -> UTIL.getMiniHBaseCluster().getLiveRegionServerThreads().isEmpty()); 120 // Start up everything again 121 LOG.info("Starting cluster"); 122 UTIL.getMiniHBaseCluster().startMaster(); 123 UTIL.invalidateConnection(); 124 UTIL.ensureSomeRegionServersAvailable(2); 125 126 UTIL.waitFor(30_000, new Waiter.Predicate<Exception>() { 127 @Override 128 public boolean evaluate() throws Exception { 129 try (Table nsTable = UTIL.getConnection().getTable(TableName.NAMESPACE_TABLE_NAME)) { 130 // Doesn't matter what we're getting. We just want to make sure we can access the region 131 nsTable.get(new Get(Bytes.toBytes("a"))); 132 return true; 133 } 134 } 135 }); 136 } 137}