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