hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestCloseAnOpeningRegion.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.io.IOException;
  21 import java.io.UncheckedIOException;
  22 import java.util.concurrent.CountDownLatch;
  23 import org.apache.hadoop.conf.Configuration;
  24 import org.apache.hadoop.hbase.HBaseClassTestRule;
  25 import org.apache.hadoop.hbase.HBaseTestingUtil;
  26 import org.apache.hadoop.hbase.HConstants;
  27 import org.apache.hadoop.hbase.PleaseHoldException;
  28 import org.apache.hadoop.hbase.StartTestingClusterOption;
  29 import org.apache.hadoop.hbase.TableName;
  30 import org.apache.hadoop.hbase.client.Put;
  31 import org.apache.hadoop.hbase.client.RegionInfo;
  32 import org.apache.hadoop.hbase.client.Table;
  33 import org.apache.hadoop.hbase.master.assignment.AssignmentManager;
  34 import org.apache.hadoop.hbase.master.region.MasterRegion;
  35 import org.apache.hadoop.hbase.regionserver.HRegionServer;
  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.BeforeClass;
  41 import org.junit.ClassRule;
  42 import org.junit.Test;
  43 import org.junit.experimental.categories.Category;
  44
  45 import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;
  46 import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest;
  47 import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionResponse;
  48
  49 @Category({ MasterTests.class, MediumTests.class })
  50 public class TestCloseAnOpeningRegion {
  51
  52   @ClassRule
  53   public static final HBaseClassTestRule CLASS_RULE =
  54     HBaseClassTestRule.forClass(TestCloseAnOpeningRegion.class);
  55
  56   private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
  57
  58   private static TableName TABLE_NAME = TableName.valueOf("race");
  59
  60   private static byte[] CF = Bytes.toBytes("cf");
  61
  62   private static volatile CountDownLatch ARRIVE;
  63
  64   private static volatile CountDownLatch RESUME;
  65
  66   public static final class MockHMaster extends HMaster {
  67
  68     public MockHMaster(Configuration conf) throws IOException {
  69       super(conf);
  70     }
  71
  72     @Override
  73     protected AssignmentManager createAssignmentManager(MasterServices master,
  74       MasterRegion masterRegion) {
  75       return new AssignmentManager(master, masterRegion) {
  76
  77         @Override
  78         public ReportRegionStateTransitionResponse reportRegionStateTransition(
  79           ReportRegionStateTransitionRequest req) throws PleaseHoldException {
  80           ReportRegionStateTransitionResponse resp = super.reportRegionStateTransition(req);
  81           TransitionCode code = req.getTransition(0).getTransitionCode();
  82           if (code == TransitionCode.OPENED && ARRIVE != null) {
  83             ARRIVE.countDown();
  84             try {
  85               RESUME.await();
  86             } catch (InterruptedException e) {
  87               throw new RuntimeException(e);
  88             }
  89           }
  90           return resp;
  91         }
  92       };
  93     }
  94   }
  95
  96   @BeforeClass
  97   public static void setUp() throws Exception {
  98     UTIL.getConfiguration().setInt(HConstants.HBASE_RPC_SHORTOPERATION_TIMEOUT_KEY, 60000);
  99     UTIL.startMiniCluster(StartTestingClusterOption.builder().numRegionServers(2)
 100       .masterClass(MockHMaster.class).build());
 101     UTIL.createTable(TABLE_NAME, CF);
 102     UTIL.getAdmin().balancerSwitch(false, true);
 103   }
 104
 105   @AfterClass
 106   public static void tearDown() throws Exception {
 107     UTIL.shutdownMiniCluster();
 108   }
 109
 110   @Test
 111   public void test() throws IOException, InterruptedException {
 112     ARRIVE = new CountDownLatch(1);
 113     RESUME = new CountDownLatch(1);
 114     RegionInfo region = UTIL.getAdmin().getRegions(TABLE_NAME).get(0);
 115     HRegionServer src = UTIL.getRSForFirstRegionInTable(TABLE_NAME);
 116     HRegionServer dst = UTIL.getOtherRegionServer(src);
 117     Thread move0 = new Thread(() -> {
 118       try {
 119         UTIL.getAdmin().move(region.getEncodedNameAsBytes(), dst.getServerName());
 120       } catch (IOException e) {
 121         throw new UncheckedIOException(e);
 122       }
 123     });
 124     move0.start();
 125     ARRIVE.await();
 126     Thread move1 = new Thread(() -> {
 127       try {
 128         UTIL.getAdmin().move(region.getEncodedNameAsBytes(), src.getServerName());
 129       } catch (IOException e) {
 130         throw new UncheckedIOException(e);
 131       }
 132     });
 133     move1.start();
 134     // No simple way to determine when it is safe to go on and produce the race so let's sleep for a
 135     // well...
 136     Thread.sleep(10000);
 137     RESUME.countDown();
 138     move0.join();
 139     move1.join();
 140     try (Table table = UTIL.getConnection().getTable(TABLE_NAME)) {
 141       // make sure that we can write to the table, which means the region is online
 142       table.put(new Put(Bytes.toBytes(0)).addColumn(CF, Bytes.toBytes("cq"), Bytes.toBytes(0)));
 143     }
 144   }
 145 }