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.jupiter.api.Assertions.assertEquals;
021import static org.junit.jupiter.api.Assertions.assertNull;
022
023import java.util.Optional;
024import org.apache.hadoop.hbase.HBaseTestingUtil;
025import org.apache.hadoop.hbase.TableName;
026import org.apache.hadoop.hbase.client.RegionInfo;
027import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
028import org.apache.hadoop.hbase.coprocessor.ObserverContext;
029import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor;
030import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
031import org.apache.hadoop.hbase.coprocessor.RegionObserver;
032import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
033import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility;
034import org.apache.hadoop.hbase.regionserver.HRegionServer;
035import org.apache.hadoop.hbase.testclassification.MasterTests;
036import org.apache.hadoop.hbase.testclassification.MediumTests;
037import org.apache.hadoop.hbase.util.Bytes;
038import org.apache.hadoop.hbase.util.JVMClusterUtil;
039import org.junit.jupiter.api.AfterAll;
040import org.junit.jupiter.api.BeforeAll;
041import org.junit.jupiter.api.Tag;
042import org.junit.jupiter.api.Test;
043
044@Tag(MasterTests.TAG)
045@Tag(MediumTests.TAG)
046public class TestExceptionInUnassignedRegion {
047
048  private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
049
050  private static final TableName TABLE_NAME = TableName.valueOf("test");
051
052  private static final byte[] CF = Bytes.toBytes("cf");
053
054  @BeforeAll
055  public static void setUp() throws Exception {
056    UTIL.getConfiguration().setStrings(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,
057      ThrowInCloseCP.class.getName());
058    UTIL.startMiniCluster(3);
059    UTIL.getAdmin().balancerSwitch(false, true);
060    UTIL.createTable(TABLE_NAME, CF);
061    UTIL.waitTableAvailable(TABLE_NAME);
062  }
063
064  @AfterAll
065  public static void tearDown() throws Exception {
066    UTIL.shutdownMiniCluster();
067  }
068
069  @Test
070  public void testExceptionInUnassignRegion() {
071    ProcedureExecutor procedureExecutor =
072      UTIL.getMiniHBaseCluster().getMaster().getMasterProcedureExecutor();
073
074    JVMClusterUtil.RegionServerThread rsThread = null;
075    for (JVMClusterUtil.RegionServerThread t : UTIL.getMiniHBaseCluster()
076      .getRegionServerThreads()) {
077      if (!t.getRegionServer().getRegions(TABLE_NAME).isEmpty()) {
078        rsThread = t;
079        break;
080      }
081    }
082    // find the rs and hri of the table
083    HRegionServer rs = rsThread.getRegionServer();
084    RegionInfo hri = rs.getRegions(TABLE_NAME).get(0).getRegionInfo();
085    TransitRegionStateProcedure moveRegionProcedure = TransitRegionStateProcedure.reopen(
086      UTIL.getMiniHBaseCluster().getMaster().getMasterProcedureExecutor().getEnvironment(), hri);
087    RegionStateNode regionNode = UTIL.getMiniHBaseCluster().getMaster().getAssignmentManager()
088      .getRegionStates().getOrCreateRegionStateNode(hri);
089    regionNode.setProcedure(moveRegionProcedure);
090    long prodId = procedureExecutor.submitProcedure(moveRegionProcedure);
091    ProcedureTestingUtility.waitProcedure(procedureExecutor, prodId);
092
093    assertEquals(2, UTIL.getMiniHBaseCluster().getLiveRegionServerThreads().size(),
094      "Should be two RS since other is aborted");
095    assertNull(getRegionServer(0).getRegionsInTransitionInRS().get(hri.getEncodedNameAsBytes()),
096      "RIT Map doesn't have correct value");
097    assertNull(getRegionServer(1).getRegionsInTransitionInRS().get(hri.getEncodedNameAsBytes()),
098      "RIT Map doesn't have correct value");
099    assertNull(getRegionServer(2).getRegionsInTransitionInRS().get(hri.getEncodedNameAsBytes()),
100      "RIT Map doesn't have correct value");
101  }
102
103  private HRegionServer getRegionServer(int index) {
104    return UTIL.getMiniHBaseCluster().getRegionServer(index);
105  }
106
107  public static class ThrowInCloseCP implements RegionCoprocessor, RegionObserver {
108
109    @Override
110    public void preClose(ObserverContext<? extends RegionCoprocessorEnvironment> c,
111      boolean abortRequested) {
112      if (!c.getEnvironment().getRegion().getRegionInfo().getTable().isSystemTable()) {
113        throw new RuntimeException();
114      }
115    }
116
117    @Override
118    public Optional<RegionObserver> getRegionObserver() {
119      return Optional.of(this);
120    }
121  }
122}