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;
019
020import static org.junit.Assert.assertFalse;
021import static org.junit.Assert.assertTrue;
022
023import java.util.ArrayList;
024import java.util.HashMap;
025import java.util.List;
026import java.util.Map;
027
028import org.apache.hadoop.hbase.HBaseClassTestRule;
029import org.apache.hadoop.hbase.HBaseTestingUtility;
030import org.apache.hadoop.hbase.HConstants;
031import org.apache.hadoop.hbase.ServerName;
032import org.apache.hadoop.hbase.TableName;
033import org.apache.hadoop.hbase.client.RegionInfo;
034import org.apache.hadoop.hbase.master.assignment.AssignmentManager;
035import org.apache.hadoop.hbase.master.assignment.RegionStates;
036import org.apache.hadoop.hbase.testclassification.LargeTests;
037import org.apache.hadoop.hbase.testclassification.MasterTests;
038import org.junit.After;
039import org.junit.Before;
040import org.junit.ClassRule;
041import org.junit.Rule;
042import org.junit.Test;
043import org.junit.experimental.categories.Category;
044import org.junit.rules.TestName;
045
046/**
047 * Test balancer with disabled table
048 */
049@Category({ MasterTests.class, LargeTests.class })
050public class TestBalancer {
051
052  @ClassRule
053  public static final HBaseClassTestRule CLASS_RULE =
054      HBaseClassTestRule.forClass(TestBalancer.class);
055
056  private final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
057
058  @Rule
059  public TestName name = new TestName();
060
061  @Before
062  public void before() throws Exception {
063    TEST_UTIL.startMiniCluster();
064  }
065
066  @After
067  public void after() throws Exception {
068    TEST_UTIL.shutdownMiniCluster();
069  }
070
071  @Test
072  public void testAssignmentsForBalancer() throws Exception {
073    final TableName tableName = TableName.valueOf(name.getMethodName());
074    TEST_UTIL.createMultiRegionTable(tableName, HConstants.CATALOG_FAMILY, 10);
075    // disable table
076    final TableName disableTableName = TableName.valueOf("testDisableTable");
077    TEST_UTIL.createMultiRegionTable(disableTableName, HConstants.CATALOG_FAMILY, 10);
078    TEST_UTIL.getAdmin().disableTable(disableTableName);
079
080    HMaster master = TEST_UTIL.getMiniHBaseCluster().getMaster();
081    AssignmentManager assignmentManager = master.getAssignmentManager();
082    RegionStates regionStates = assignmentManager.getRegionStates();
083    ServerName sn1 = ServerName.parseServerName("asf903.gq1.ygridcore.net,52690,1517835491385");
084    regionStates.getOrCreateServer(sn1);
085
086    TableStateManager tableStateManager = master.getTableStateManager();
087    ServerManager serverManager = master.getServerManager();
088    Map<TableName, Map<ServerName, List<RegionInfo>>> assignments =
089      assignmentManager.getRegionStates()
090        .getAssignmentsForBalancer(tableStateManager, serverManager.getOnlineServersList(), true);
091    assertFalse(assignments.containsKey(disableTableName));
092    assertTrue(assignments.containsKey(tableName));
093    assertFalse(assignments.get(tableName).containsKey(sn1));
094
095    assignments = assignmentManager.getRegionStates()
096      .getAssignmentsForBalancer(tableStateManager, serverManager.getOnlineServersList(), false);
097    Map<TableName, Map<ServerName, List<RegionInfo>>> tableNameMap = new HashMap<>();
098    for (Map.Entry<ServerName, List<RegionInfo>> entry : assignments
099      .get(HConstants.ENSEMBLE_TABLE_NAME).entrySet()) {
100      final ServerName serverName = entry.getKey();
101      for (RegionInfo regionInfo : entry.getValue()) {
102        Map<ServerName, List<RegionInfo>> tableResult =
103          tableNameMap.computeIfAbsent(regionInfo.getTable(), t -> new HashMap<>());
104        List<RegionInfo> serverResult =
105          tableResult.computeIfAbsent(serverName, s -> new ArrayList<>());
106        serverResult.add(regionInfo);
107      }
108    }
109    assertFalse(tableNameMap.containsKey(disableTableName));
110    assertTrue(tableNameMap.containsKey(tableName));
111    assertFalse(tableNameMap.get(tableName).containsKey(sn1));
112  }
113}