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.assertTrue;
022
023import java.io.IOException;
024import java.util.HashSet;
025import java.util.List;
026import java.util.Set;
027import org.apache.hadoop.hbase.HBaseTestingUtil;
028import org.apache.hadoop.hbase.ServerName;
029import org.apache.hadoop.hbase.client.RegionInfo;
030import org.apache.hadoop.hbase.master.HMaster;
031import org.apache.hadoop.hbase.testclassification.MasterTests;
032import org.apache.hadoop.hbase.testclassification.MediumTests;
033import org.junit.jupiter.api.AfterAll;
034import org.junit.jupiter.api.BeforeAll;
035import org.junit.jupiter.api.Tag;
036import org.junit.jupiter.api.Test;
037
038@Tag(MasterTests.TAG)
039@Tag(MediumTests.TAG)
040public class TestAssignmentManagerLoadMetaRegionState {
041
042  private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
043
044  @BeforeAll
045  public static void setUp() throws Exception {
046    UTIL.startMiniCluster(1);
047  }
048
049  @AfterAll
050  public static void tearDown() throws IOException {
051    UTIL.shutdownMiniCluster();
052  }
053
054  @Test
055  public void testRestart() throws InterruptedException, IOException {
056    ServerName sn = UTIL.getMiniHBaseCluster().getRegionServer(0).getServerName();
057    AssignmentManager am = UTIL.getMiniHBaseCluster().getMaster().getAssignmentManager();
058    Set<RegionInfo> regions = new HashSet<>(am.getRegionsOnServer(sn));
059
060    UTIL.getMiniHBaseCluster().stopMaster(0).join();
061    HMaster newMaster = UTIL.getMiniHBaseCluster().startMaster().getMaster();
062    UTIL.waitFor(30000, () -> newMaster.isInitialized());
063
064    am = UTIL.getMiniHBaseCluster().getMaster().getAssignmentManager();
065    List<RegionInfo> newRegions = am.getRegionsOnServer(sn);
066    assertEquals(regions.size(), newRegions.size());
067    for (RegionInfo region : newRegions) {
068      assertTrue(regions.contains(region));
069    }
070  }
071}