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.assertTrue;
022
023import java.io.IOException;
024import org.apache.hadoop.hbase.HBaseClassTestRule;
025import org.apache.hadoop.hbase.HBaseTestingUtility;
026import org.apache.hadoop.hbase.TableName;
027import org.apache.hadoop.hbase.client.RegionInfo;
028import org.apache.hadoop.hbase.master.HMaster;
029import org.apache.hadoop.hbase.master.procedure.MasterProcedureConstants;
030import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
031import org.apache.hadoop.hbase.master.procedure.MasterProcedureTestingUtility;
032import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
033import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility;
034import org.apache.hadoop.hbase.regionserver.HRegion;
035import org.apache.hadoop.hbase.regionserver.HRegionServer;
036import org.apache.hadoop.hbase.testclassification.MasterTests;
037import org.apache.hadoop.hbase.testclassification.MediumTests;
038import org.apache.hadoop.hbase.util.Bytes;
039import org.junit.After;
040import org.junit.AfterClass;
041import org.junit.Before;
042import org.junit.BeforeClass;
043import org.junit.ClassRule;
044import org.junit.Rule;
045import org.junit.Test;
046import org.junit.experimental.categories.Category;
047import org.junit.rules.TestName;
048
049@Category({ MasterTests.class, MediumTests.class })
050public class TestTransitRegionStateProcedure {
051
052  @ClassRule
053  public static final HBaseClassTestRule CLASS_RULE =
054    HBaseClassTestRule.forClass(TestTransitRegionStateProcedure.class);
055
056  private static HBaseTestingUtility UTIL = new HBaseTestingUtility();
057
058  private static byte[] CF = Bytes.toBytes("cf");
059
060  @Rule
061  public TestName name = new TestName();
062
063  private TableName tableName;
064
065  @BeforeClass
066  public static void setUpBeforeClass() throws Exception {
067    UTIL.getConfiguration().setInt(MasterProcedureConstants.MASTER_PROCEDURE_THREADS, 1);
068    UTIL.startMiniCluster(3);
069    UTIL.getAdmin().balancerSwitch(false, true);
070  }
071
072  @AfterClass
073  public static void tearDownAfterClass() throws Exception {
074    UTIL.shutdownMiniCluster();
075  }
076
077  @Before
078  public void setUp() throws IOException, InterruptedException {
079    tableName = TableName.valueOf(name.getMethodName());
080    UTIL.createTable(tableName, CF);
081    UTIL.waitTableAvailable(tableName);
082  }
083
084  private void resetProcExecutorTestingKillFlag() {
085    ProcedureExecutor<MasterProcedureEnv> procExec =
086      UTIL.getHBaseCluster().getMaster().getMasterProcedureExecutor();
087    ProcedureTestingUtility.setKillAndToggleBeforeStoreUpdate(procExec, false);
088    assertTrue("expected executor to be running", procExec.isRunning());
089  }
090
091  @After
092  public void tearDown() throws IOException {
093    resetProcExecutorTestingKillFlag();
094    UTIL.deleteTable(tableName);
095  }
096
097  private void testRecoveryAndDoubleExcution(TransitRegionStateProcedure proc) throws Exception {
098    HMaster master = UTIL.getHBaseCluster().getMaster();
099    AssignmentManager am = master.getAssignmentManager();
100    RegionStateNode regionNode = am.getRegionStates().getRegionStateNode(proc.getRegion());
101    assertFalse(regionNode.isInTransition());
102    regionNode.setProcedure(proc);
103    assertTrue(regionNode.isInTransition());
104    ProcedureExecutor<MasterProcedureEnv> procExec = master.getMasterProcedureExecutor();
105    ProcedureTestingUtility.setKillAndToggleBeforeStoreUpdate(procExec, true);
106    long procId = procExec.submitProcedure(proc);
107    MasterProcedureTestingUtility.testRecoveryAndDoubleExecution(procExec, procId);
108    regionNode = am.getRegionStates().getRegionStateNode(proc.getRegion());
109    assertFalse(regionNode.isInTransition());
110  }
111
112  @Test
113  public void testRecoveryAndDoubleExecutionMove() throws Exception {
114    MasterProcedureEnv env =
115      UTIL.getMiniHBaseCluster().getMaster().getMasterProcedureExecutor().getEnvironment();
116    HRegion region = UTIL.getMiniHBaseCluster().getRegions(tableName).get(0);
117    long openSeqNum = region.getOpenSeqNum();
118    TransitRegionStateProcedure proc =
119      TransitRegionStateProcedure.move(env, region.getRegionInfo(), null);
120    testRecoveryAndDoubleExcution(proc);
121    HRegion region2 = UTIL.getMiniHBaseCluster().getRegions(tableName).get(0);
122    long openSeqNum2 = region2.getOpenSeqNum();
123    // confirm that the region is successfully opened
124    assertTrue(openSeqNum2 > openSeqNum);
125  }
126
127  @Test
128  public void testRecoveryAndDoubleExecutionReopen() throws Exception {
129    MasterProcedureEnv env =
130      UTIL.getMiniHBaseCluster().getMaster().getMasterProcedureExecutor().getEnvironment();
131    HRegionServer rs = UTIL.getRSForFirstRegionInTable(tableName);
132    HRegion region = rs.getRegions(tableName).get(0);
133    long openSeqNum = region.getOpenSeqNum();
134    TransitRegionStateProcedure proc =
135      TransitRegionStateProcedure.reopen(env, region.getRegionInfo());
136    testRecoveryAndDoubleExcution(proc);
137    // should still be on the same RS
138    HRegion region2 = rs.getRegions(tableName).get(0);
139    long openSeqNum2 = region2.getOpenSeqNum();
140    // confirm that the region is successfully opened
141    assertTrue(openSeqNum2 > openSeqNum);
142  }
143
144  @Test
145  public void testRecoveryAndDoubleExecutionUnassignAndAssign() throws Exception {
146    HMaster master = UTIL.getMiniHBaseCluster().getMaster();
147    MasterProcedureEnv env = master.getMasterProcedureExecutor().getEnvironment();
148    HRegion region = UTIL.getMiniHBaseCluster().getRegions(tableName).get(0);
149    RegionInfo regionInfo = region.getRegionInfo();
150    long openSeqNum = region.getOpenSeqNum();
151    TransitRegionStateProcedure unassign = TransitRegionStateProcedure.unassign(env, regionInfo);
152    testRecoveryAndDoubleExcution(unassign);
153    AssignmentManager am = master.getAssignmentManager();
154    assertTrue(am.getRegionStates().getRegionState(regionInfo).isClosed());
155
156    TransitRegionStateProcedure assign = TransitRegionStateProcedure.assign(env, regionInfo, null);
157    testRecoveryAndDoubleExcution(assign);
158
159    HRegion region2 = UTIL.getMiniHBaseCluster().getRegions(tableName).get(0);
160    long openSeqNum2 = region2.getOpenSeqNum();
161    // confirm that the region is successfully opened
162    assertTrue(openSeqNum2 > openSeqNum);
163  }
164}