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.Assert.assertFalse;
021import static org.junit.Assert.fail;
022
023import java.io.IOException;
024import java.util.List;
025import java.util.stream.Collectors;
026import java.util.stream.IntStream;
027import java.util.stream.Stream;
028import org.apache.hadoop.hbase.HBaseClassTestRule;
029import org.apache.hadoop.hbase.HBaseIOException;
030import org.apache.hadoop.hbase.HBaseTestingUtil;
031import org.apache.hadoop.hbase.TableName;
032import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
033import org.apache.hadoop.hbase.client.RegionInfo;
034import org.apache.hadoop.hbase.client.RegionReplicaUtil;
035import org.apache.hadoop.hbase.client.TableDescriptorBuilder;
036import org.apache.hadoop.hbase.master.HMaster;
037import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
038import org.apache.hadoop.hbase.testclassification.MasterTests;
039import org.apache.hadoop.hbase.testclassification.MediumTests;
040import org.apache.hadoop.hbase.util.Bytes;
041import org.junit.After;
042import org.junit.AfterClass;
043import org.junit.BeforeClass;
044import org.junit.ClassRule;
045import org.junit.Test;
046import org.junit.experimental.categories.Category;
047
048@Category({ MasterTests.class, MediumTests.class })
049public class TestAssignmentManagerUtil {
050  @ClassRule
051  public static final HBaseClassTestRule CLASS_RULE =
052    HBaseClassTestRule.forClass(TestAssignmentManagerUtil.class);
053
054  private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
055
056  private static TableName TABLE_NAME = TableName.valueOf("AM");
057
058  private static MasterProcedureEnv ENV;
059
060  private static AssignmentManager AM;
061
062  private static int REGION_REPLICATION = 3;
063
064  @BeforeClass
065  public static void setUp() throws Exception {
066    UTIL.startMiniCluster(1);
067    UTIL.getAdmin().balancerSwitch(false, true);
068    UTIL.createTable(TableDescriptorBuilder.newBuilder(TABLE_NAME)
069      .setColumnFamily(ColumnFamilyDescriptorBuilder.of("cf"))
070      .setRegionReplication(REGION_REPLICATION).build(), new byte[][] { Bytes.toBytes(0) });
071    UTIL.waitTableAvailable(TABLE_NAME);
072    HMaster master = UTIL.getMiniHBaseCluster().getMaster();
073    ENV = master.getMasterProcedureExecutor().getEnvironment();
074    AM = master.getAssignmentManager();
075  }
076
077  @After
078  public void tearDownAfterTest() throws IOException {
079    for (RegionInfo region : UTIL.getAdmin().getRegions(TABLE_NAME)) {
080      RegionStateNode regionNode = AM.getRegionStates().getRegionStateNode(region);
081      // confirm that we have released the lock
082      assertFalse(regionNode.isLocked());
083      TransitRegionStateProcedure proc = regionNode.getProcedure();
084      if (proc != null) {
085        regionNode.unsetProcedure(proc);
086      }
087    }
088  }
089
090  @AfterClass
091  public static void tearDown() throws Exception {
092    UTIL.shutdownMiniCluster();
093  }
094
095  private List<RegionInfo> getPrimaryRegions() throws IOException {
096    return UTIL.getAdmin().getRegions(TABLE_NAME).stream()
097      .filter(r -> RegionReplicaUtil.isDefaultReplica(r)).collect(Collectors.toList());
098  }
099
100  @Test
101  public void testCreateUnassignProcedureForSplitFail() throws IOException {
102    RegionInfo region = getPrimaryRegions().get(0);
103    AM.getRegionStates().getRegionStateNode(region)
104      .setProcedure(TransitRegionStateProcedure.unassign(ENV, region));
105    try {
106      AssignmentManagerUtil.createUnassignProceduresForSplitOrMerge(ENV, Stream.of(region),
107        REGION_REPLICATION);
108      fail("Should fail as the region is in transition");
109    } catch (HBaseIOException e) {
110      // expected
111    }
112  }
113
114  @Test
115  public void testCreateUnassignProceduresForMergeFail() throws IOException {
116    List<RegionInfo> regions = getPrimaryRegions();
117    RegionInfo regionA = regions.get(0);
118    RegionInfo regionB = regions.get(1);
119    AM.getRegionStates().getRegionStateNode(regionB)
120      .setProcedure(TransitRegionStateProcedure.unassign(ENV, regionB));
121    try {
122      AssignmentManagerUtil.createUnassignProceduresForSplitOrMerge(ENV,
123        Stream.of(regionA, regionB), REGION_REPLICATION);
124      fail("Should fail as the region is in transition");
125    } catch (HBaseIOException e) {
126      // expected
127    }
128    IntStream.range(0, REGION_REPLICATION)
129      .mapToObj(i -> RegionReplicaUtil.getRegionInfoForReplica(regionA, i))
130      .map(AM.getRegionStates()::getRegionStateNode).forEachOrdered(
131        rn -> assertFalse("Should have unset the proc for " + rn, rn.isInTransition()));
132  }
133}