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.procedure;
019
020import java.util.concurrent.BrokenBarrierException;
021import java.util.concurrent.CyclicBarrier;
022import org.apache.hadoop.hbase.HBaseClassTestRule;
023import org.apache.hadoop.hbase.HBaseTestingUtil;
024import org.apache.hadoop.hbase.master.replication.AbstractPeerNoLockProcedure;
025import org.apache.hadoop.hbase.master.replication.AbstractPeerProcedure;
026import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
027import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException;
028import org.apache.hadoop.hbase.procedure2.ProcedureYieldException;
029import org.apache.hadoop.hbase.testclassification.LargeTests;
030import org.apache.hadoop.hbase.testclassification.MasterTests;
031import org.junit.AfterClass;
032import org.junit.BeforeClass;
033import org.junit.ClassRule;
034import org.junit.Test;
035import org.junit.experimental.categories.Category;
036
037/**
038 * Testcase for HBASE-29380
039 */
040@Category({ MasterTests.class, LargeTests.class })
041public class TestProcedureWaitAndWake {
042
043  @ClassRule
044  public static final HBaseClassTestRule CLASS_RULE =
045    HBaseClassTestRule.forClass(TestProcedureWaitAndWake.class);
046
047  private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
048
049  public static final class MyPeerProcedure extends AbstractPeerProcedure<Integer> {
050
051    private final CyclicBarrier barrier;
052
053    private boolean passedBarrier;
054
055    public MyPeerProcedure() {
056      this(null);
057    }
058
059    public MyPeerProcedure(CyclicBarrier barrier) {
060      super("1");
061      this.barrier = barrier;
062    }
063
064    @Override
065    public PeerOperationType getPeerOperationType() {
066      return PeerOperationType.REMOVE;
067    }
068
069    @Override
070    protected LockState acquireLock(MasterProcedureEnv env) {
071      // make sure we have two procedure arrive here at the same time, so one of them will enter the
072      // lock wait state
073      if (!passedBarrier) {
074        try {
075          barrier.await();
076        } catch (InterruptedException | BrokenBarrierException e) {
077          throw new RuntimeException(e);
078        }
079        passedBarrier = true;
080      }
081      return super.acquireLock(env);
082    }
083
084    @Override
085    protected Flow executeFromState(MasterProcedureEnv env, Integer state)
086      throws ProcedureSuspendedException, ProcedureYieldException, InterruptedException {
087      if (state.intValue() == 0) {
088        setNextState(1);
089        addChildProcedure(new MySubPeerProcedure());
090        return Flow.HAS_MORE_STATE;
091      } else {
092        Thread.sleep(200);
093        return Flow.NO_MORE_STATE;
094      }
095    }
096
097    @Override
098    protected Integer getState(int stateId) {
099      return Integer.valueOf(stateId);
100    }
101
102    @Override
103    protected int getStateId(Integer state) {
104      return state.intValue();
105    }
106
107    @Override
108    protected Integer getInitialState() {
109      return 0;
110    }
111
112    public static final class MySubPeerProcedure extends AbstractPeerNoLockProcedure<Integer> {
113
114      public MySubPeerProcedure() {
115        super("1");
116      }
117
118      @Override
119      public PeerOperationType getPeerOperationType() {
120        return PeerOperationType.REFRESH;
121      }
122
123      @Override
124      protected Flow executeFromState(MasterProcedureEnv env, Integer state)
125        throws ProcedureSuspendedException, ProcedureYieldException, InterruptedException {
126        return Flow.NO_MORE_STATE;
127      }
128
129      @Override
130      protected Integer getState(int stateId) {
131        return Integer.valueOf(stateId);
132      }
133
134      @Override
135      protected int getStateId(Integer state) {
136        return state.intValue();
137      }
138
139      @Override
140      protected Integer getInitialState() {
141        return 0;
142      }
143    }
144  }
145
146  @BeforeClass
147  public static void setUp() throws Exception {
148    UTIL.getConfiguration().setInt(MasterProcedureConstants.MASTER_PROCEDURE_THREADS, 8);
149    UTIL.startMiniCluster(3);
150  }
151
152  @AfterClass
153  public static void tearDown() throws Exception {
154    UTIL.shutdownMiniCluster();
155  }
156
157  @Test
158  public void testPeerProcedure() {
159    ProcedureExecutor<MasterProcedureEnv> procExec =
160      UTIL.getMiniHBaseCluster().getMaster().getMasterProcedureExecutor();
161    CyclicBarrier barrier = new CyclicBarrier(2);
162    MyPeerProcedure p1 = new MyPeerProcedure(barrier);
163    MyPeerProcedure p2 = new MyPeerProcedure(barrier);
164    long id1 = procExec.submitProcedure(p1);
165    long id2 = procExec.submitProcedure(p2);
166    UTIL.waitFor(10000, () -> procExec.isFinished(id1));
167    UTIL.waitFor(10000, () -> procExec.isFinished(id2));
168  }
169}