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 org.apache.hadoop.hbase.testclassification.MasterTests;
021import org.apache.hadoop.hbase.testclassification.MediumTests;
022import org.junit.jupiter.api.Tag;
023import org.junit.jupiter.api.Test;
024
025@Tag(MasterTests.TAG)
026@Tag(MediumTests.TAG)
027public class TestStochasticLoadBalancerSmallCluster extends StochasticBalancerTestBase {
028
029  @Test
030  public void testSmallCluster() {
031    int numNodes = 10;
032    int numRegions = 1000;
033    int numRegionsPerServer = 40; // all servers except one
034    int replication = 1;
035    int numTables = 10;
036    testWithClusterWithIteration(numNodes, numRegions, numRegionsPerServer, replication, numTables,
037      true, true);
038  }
039
040  @Test
041  public void testSmallCluster2() {
042    int numNodes = 20;
043    int numRegions = 2000;
044    int numRegionsPerServer = 40; // all servers except one
045    int replication = 1;
046    int numTables = 10;
047    testWithClusterWithIteration(numNodes, numRegions, numRegionsPerServer, replication, numTables,
048      true, true);
049  }
050
051  @Test
052  public void testSmallCluster3() {
053    int numNodes = 20;
054    int numRegions = 2000;
055    int numRegionsPerServer = 1; // all servers except one
056    int replication = 1;
057    int numTables = 10;
058    // fails because of max moves
059    testWithClusterWithIteration(numNodes, numRegions, numRegionsPerServer, replication, numTables,
060      false, false);
061  }
062}