hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMergeTableRegionsWhileRSCrash.java

   1 /*
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18 package org.apache.hadoop.hbase.master;
  19
  20 import java.util.List;
  21 import java.util.concurrent.CountDownLatch;
  22 import org.apache.hadoop.hbase.HBaseClassTestRule;
  23 import org.apache.hadoop.hbase.HBaseTestingUtility;
  24 import org.apache.hadoop.hbase.TableName;
  25 import org.apache.hadoop.hbase.client.Admin;
  26 import org.apache.hadoop.hbase.client.Put;
  27 import org.apache.hadoop.hbase.client.RegionInfo;
  28 import org.apache.hadoop.hbase.client.Result;
  29 import org.apache.hadoop.hbase.client.ResultScanner;
  30 import org.apache.hadoop.hbase.client.Scan;
  31 import org.apache.hadoop.hbase.client.Table;
  32 import org.apache.hadoop.hbase.master.assignment.MergeTableRegionsProcedure;
  33 import org.apache.hadoop.hbase.master.assignment.TransitRegionStateProcedure;
  34 import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
  35 import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
  36 import org.apache.hadoop.hbase.testclassification.MasterTests;
  37 import org.apache.hadoop.hbase.testclassification.MediumTests;
  38 import org.apache.hadoop.hbase.util.Bytes;
  39 import org.junit.AfterClass;
  40 import org.junit.Assert;
  41 import org.junit.BeforeClass;
  42 import org.junit.ClassRule;
  43 import org.junit.Test;
  44 import org.junit.experimental.categories.Category;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48
  49
  50 @Category({MasterTests.class, MediumTests.class})
  51 public class TestMergeTableRegionsWhileRSCrash {
  52
  53   @ClassRule
  54   public static final HBaseClassTestRule CLASS_RULE =
  55       HBaseClassTestRule.forClass(TestMergeTableRegionsWhileRSCrash.class);
  56
  57   private static final Logger LOG = LoggerFactory
  58       .getLogger(TestMergeTableRegionsWhileRSCrash.class);
  59
  60   protected static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
  61   private static TableName TABLE_NAME = TableName.valueOf("test");
  62   private static Admin admin;
  63   private static byte[] CF = Bytes.toBytes("cf");
  64   private static byte[] SPLITKEY = Bytes.toBytes("row5");
  65   private static CountDownLatch mergeCommitArrive = new CountDownLatch(1);
  66   private static Table TABLE;
  67
  68
  69   @BeforeClass
  70   public static void setupCluster() throws Exception {
  71     UTIL.startMiniCluster(1);
  72     admin = UTIL.getAdmin();
  73     byte[][] splitKeys = new byte[1][];
  74     splitKeys[0] = SPLITKEY;
  75     TABLE = UTIL.createTable(TABLE_NAME, CF, splitKeys);
  76     UTIL.waitTableAvailable(TABLE_NAME);
  77   }
  78
  79   @AfterClass
  80   public static void cleanupTest() throws Exception {
  81     try {
  82       UTIL.shutdownMiniCluster();
  83     } catch (Exception e) {
  84       LOG.warn("failure shutting down cluster", e);
  85     }
  86   }
  87
  88   @Test
  89   public void test() throws Exception {
  90     //write some rows to the table
  91     for (int i = 0; i < 10; i++) {
  92       byte[] row = Bytes.toBytes("row" + i);
  93       Put put = new Put(row);
  94       put.addColumn(CF, CF, CF);
  95       TABLE.put(put);
  96     }
  97     MasterProcedureEnv env = UTIL.getMiniHBaseCluster().getMaster()
  98         .getMasterProcedureExecutor().getEnvironment();
  99     final ProcedureExecutor<MasterProcedureEnv> executor = UTIL.getMiniHBaseCluster()
 100         .getMaster().getMasterProcedureExecutor();
 101     List<RegionInfo> regionInfos = admin.getRegions(TABLE_NAME);
 102     MergeTableRegionsProcedure mergeTableRegionsProcedure = new MergeTableRegionsProcedure(
 103         env, new RegionInfo [] {regionInfos.get(0), regionInfos.get(1)}, false);
 104     executor.submitProcedure(mergeTableRegionsProcedure);
 105     UTIL.waitFor(30000,
 106       () -> executor.getProcedures().stream().filter(p -> p instanceof TransitRegionStateProcedure)
 107         .map(p -> (TransitRegionStateProcedure) p)
 108         .anyMatch(p -> TABLE_NAME.equals(p.getTableName())));
 109     UTIL.getMiniHBaseCluster().killRegionServer(
 110         UTIL.getMiniHBaseCluster().getRegionServer(0).getServerName());
 111     UTIL.getMiniHBaseCluster().startRegionServer();
 112     UTIL.waitUntilNoRegionsInTransition();
 113     Scan scan = new Scan();
 114     ResultScanner results = TABLE.getScanner(scan);
 115     int count = 0;
 116     Result result = null;
 117     while ((result = results.next()) != null) {
 118       count++;
 119     }
 120     Assert.assertEquals("There should be 10 rows!", 10, count);
 121   }
 122 }