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.regionserver; 019 020import static org.junit.Assert.assertEquals; 021 022import java.io.IOException; 023import org.apache.hadoop.hbase.HBaseClassTestRule; 024import org.apache.hadoop.hbase.HBaseTestingUtility; 025import org.apache.hadoop.hbase.TableName; 026import org.apache.hadoop.hbase.client.Get; 027import org.apache.hadoop.hbase.client.Put; 028import org.apache.hadoop.hbase.client.Table; 029import org.apache.hadoop.hbase.master.HMaster; 030import org.apache.hadoop.hbase.master.ServerManager; 031import org.apache.hadoop.hbase.testclassification.MediumTests; 032import org.apache.hadoop.hbase.testclassification.RegionServerTests; 033import org.apache.hadoop.hbase.util.Bytes; 034import org.apache.hadoop.hbase.util.JVMClusterUtil.RegionServerThread; 035import org.junit.AfterClass; 036import org.junit.BeforeClass; 037import org.junit.ClassRule; 038import org.junit.Test; 039import org.junit.experimental.categories.Category; 040 041/** 042 * Testcase for HBASE-20742 043 */ 044@Category({ RegionServerTests.class, MediumTests.class }) 045public class TestRegionServerCrashDisableWAL { 046 047 @ClassRule 048 public static final HBaseClassTestRule CLASS_RULE = 049 HBaseClassTestRule.forClass(TestRegionServerCrashDisableWAL.class); 050 051 private static final HBaseTestingUtility UTIL = new HBaseTestingUtility(); 052 053 private static TableName TABLE_NAME = TableName.valueOf("test"); 054 055 private static byte[] CF = Bytes.toBytes("cf"); 056 057 private static byte[] CQ = Bytes.toBytes("cq"); 058 059 @BeforeClass 060 public static void setUp() throws Exception { 061 UTIL.getConfiguration().setInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, 1); 062 UTIL.getConfiguration().setBoolean("hbase.regionserver.hlog.enabled", false); 063 UTIL.startMiniCluster(2); 064 UTIL.createTable(TABLE_NAME, CF); 065 UTIL.waitTableAvailable(TABLE_NAME); 066 HRegionServer rs = UTIL.getRSForFirstRegionInTable(TABLE_NAME); 067 if (!rs.getRegions(TableName.META_TABLE_NAME).isEmpty()) { 068 HRegionServer rs1 = UTIL.getOtherRegionServer(rs); 069 UTIL.moveRegionAndWait( 070 UTIL.getMiniHBaseCluster().getRegions(TABLE_NAME).get(0).getRegionInfo(), 071 rs1.getServerName()); 072 } 073 UTIL.getAdmin().balancerSwitch(false, true); 074 } 075 076 @AfterClass 077 public static void tearDown() throws Exception { 078 UTIL.shutdownMiniCluster(); 079 } 080 081 @Test 082 public void test() throws InterruptedException, IOException { 083 HMaster master = UTIL.getMiniHBaseCluster().stopMaster(0).getMaster(); 084 // Shutdown master before shutting down rs 085 UTIL.waitFor(30000, () -> !master.isAlive()); 086 RegionServerThread thread = null; 087 for (RegionServerThread t : UTIL.getMiniHBaseCluster().getRegionServerThreads()) { 088 if (!t.getRegionServer().getRegions(TABLE_NAME).isEmpty()) { 089 thread = t; 090 break; 091 } 092 } 093 // shutdown rs 094 thread.getRegionServer().abort("For testing"); 095 thread.join(); 096 // restart master 097 UTIL.getMiniHBaseCluster().startMaster(); 098 // make sure that we can schedule a SCP for the crashed server which WAL is disabled and bring 099 // the region online. 100 try (Table table = 101 UTIL.getConnection().getTableBuilder(TABLE_NAME, null).setOperationTimeout(30000).build()) { 102 table.put(new Put(Bytes.toBytes(1)).addColumn(CF, CQ, Bytes.toBytes(1))); 103 assertEquals(1, Bytes.toInt(table.get(new Get(Bytes.toBytes(1))).getValue(CF, CQ))); 104 } 105 } 106}