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 java.util.Optional;
021import org.apache.hadoop.hbase.HBaseClassTestRule;
022import org.apache.hadoop.hbase.HBaseTestingUtil;
023import org.apache.hadoop.hbase.TableName;
024import org.apache.hadoop.hbase.client.RegionInfo;
025import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
026import org.apache.hadoop.hbase.coprocessor.ObserverContext;
027import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor;
028import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
029import org.apache.hadoop.hbase.coprocessor.RegionObserver;
030import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
031import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility;
032import org.apache.hadoop.hbase.regionserver.HRegionServer;
033import org.apache.hadoop.hbase.testclassification.MasterTests;
034import org.apache.hadoop.hbase.testclassification.MediumTests;
035import org.apache.hadoop.hbase.util.Bytes;
036import org.apache.hadoop.hbase.util.JVMClusterUtil;
037import org.junit.AfterClass;
038import org.junit.Assert;
039import org.junit.BeforeClass;
040import org.junit.ClassRule;
041import org.junit.Test;
042import org.junit.experimental.categories.Category;
043
044@Category({ MasterTests.class, MediumTests.class })
045public class TestExceptionInUnassignedRegion {
046
047  @ClassRule
048  public static final HBaseClassTestRule CLASS_RULE =
049    HBaseClassTestRule.forClass(TestExceptionInUnassignedRegion.class);
050
051  private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
052
053  private static final TableName TABLE_NAME = TableName.valueOf("test");
054
055  private static final byte[] CF = Bytes.toBytes("cf");
056
057  @BeforeClass
058  public static void setUp() throws Exception {
059    UTIL.getConfiguration().setStrings(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,
060      ThrowInCloseCP.class.getName());
061    UTIL.startMiniCluster(3);
062    UTIL.getAdmin().balancerSwitch(false, true);
063    UTIL.createTable(TABLE_NAME, CF);
064    UTIL.waitTableAvailable(TABLE_NAME);
065  }
066
067  @AfterClass
068  public static void tearDown() throws Exception {
069    UTIL.shutdownMiniCluster();
070  }
071
072  @Test
073  public void testExceptionInUnassignRegion() {
074    ProcedureExecutor procedureExecutor =
075      UTIL.getMiniHBaseCluster().getMaster().getMasterProcedureExecutor();
076
077    JVMClusterUtil.RegionServerThread rsThread = null;
078    for (JVMClusterUtil.RegionServerThread t : UTIL.getMiniHBaseCluster()
079      .getRegionServerThreads()) {
080      if (!t.getRegionServer().getRegions(TABLE_NAME).isEmpty()) {
081        rsThread = t;
082        break;
083      }
084    }
085    // find the rs and hri of the table
086    HRegionServer rs = rsThread.getRegionServer();
087    RegionInfo hri = rs.getRegions(TABLE_NAME).get(0).getRegionInfo();
088    TransitRegionStateProcedure moveRegionProcedure = TransitRegionStateProcedure.reopen(
089      UTIL.getMiniHBaseCluster().getMaster().getMasterProcedureExecutor().getEnvironment(), hri);
090    RegionStateNode regionNode = UTIL.getMiniHBaseCluster().getMaster().getAssignmentManager()
091      .getRegionStates().getOrCreateRegionStateNode(hri);
092    regionNode.setProcedure(moveRegionProcedure);
093    long prodId = procedureExecutor.submitProcedure(moveRegionProcedure);
094    ProcedureTestingUtility.waitProcedure(procedureExecutor, prodId);
095
096    Assert.assertEquals("Should be two RS since other is aborted", 2,
097      UTIL.getMiniHBaseCluster().getLiveRegionServerThreads().size());
098    Assert.assertNull("RIT Map doesn't have correct value",
099      getRegionServer(0).getRegionsInTransitionInRS().get(hri.getEncodedNameAsBytes()));
100    Assert.assertNull("RIT Map doesn't have correct value",
101      getRegionServer(1).getRegionsInTransitionInRS().get(hri.getEncodedNameAsBytes()));
102    Assert.assertNull("RIT Map doesn't have correct value",
103      getRegionServer(2).getRegionsInTransitionInRS().get(hri.getEncodedNameAsBytes()));
104  }
105
106  private HRegionServer getRegionServer(int index) {
107    return UTIL.getMiniHBaseCluster().getRegionServer(index);
108  }
109
110  public static class ThrowInCloseCP implements RegionCoprocessor, RegionObserver {
111
112    @Override
113    public void preClose(ObserverContext<RegionCoprocessorEnvironment> c, boolean abortRequested) {
114      if (!c.getEnvironment().getRegion().getRegionInfo().getTable().isSystemTable()) {
115        throw new RuntimeException();
116      }
117    }
118
119    @Override
120    public Optional<RegionObserver> getRegionObserver() {
121      return Optional.of(this);
122    }
123  }
124}