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.balancer;
019
020import java.time.Duration;
021import org.apache.hadoop.hbase.HBaseClassTestRule;
022import org.apache.hadoop.hbase.testclassification.LargeTests;
023import org.apache.hadoop.hbase.testclassification.MasterTests;
024import org.junit.ClassRule;
025import org.junit.Test;
026import org.junit.experimental.categories.Category;
027
028@Category({ MasterTests.class, LargeTests.class })
029public class TestStochasticLoadBalancerMidCluster extends StochasticBalancerTestBase {
030
031  @ClassRule
032  public static final HBaseClassTestRule CLASS_RULE =
033    HBaseClassTestRule.forClass(TestStochasticLoadBalancerMidCluster.class);
034
035  @Test
036  public void testMidCluster() {
037    int numNodes = 100;
038    int numRegions = 10000;
039    int numRegionsPerServer = 60; // all servers except one
040    int replication = 1;
041    int numTables = 40;
042    testWithClusterWithIteration(numNodes, numRegions, numRegionsPerServer, replication, numTables,
043      true, true);
044  }
045
046  @Test
047  public void testMidCluster2() {
048    int numNodes = 200;
049    int numRegions = 100000;
050    int numRegionsPerServer = 40; // all servers except one
051    int replication = 1;
052    int numTables = 400;
053    // num large num regions means may not always get to best balance with one run
054    boolean assertFullyBalanced = false;
055    setMaxRunTime(Duration.ofMillis(2500));
056    testWithClusterWithIteration(numNodes, numRegions, numRegionsPerServer, replication, numTables,
057      assertFullyBalanced, false);
058  }
059
060  @Test
061  public void testMidCluster3() {
062    int numNodes = 100;
063    int numRegions = 2000;
064    int numRegionsPerServer = 9; // all servers except one
065    int replication = 1;
066    int numTables = 110;
067    testWithClusterWithIteration(numNodes, numRegions, numRegionsPerServer, replication, numTables,
068      true, true);
069    // TODO(eclark): Make sure that the tables are well distributed.
070  }
071}