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.MasterTests;
022import org.apache.hadoop.hbase.testclassification.MediumTests;
023import org.junit.jupiter.api.Tag;
024import org.junit.jupiter.api.Test;
025
026@Tag(MasterTests.TAG)
027@Tag(MediumTests.TAG)
028public class TestStochasticLoadBalancerRegionReplicaHighReplication
029  extends StochasticBalancerTestBase2 {
030
031  @Test
032  public void testRegionReplicasOnMidClusterHighReplication() {
033    conf.setLong(StochasticLoadBalancer.MAX_STEPS_KEY, 4000000L);
034    setMaxRunTime(Duration.ofSeconds(5));
035    loadBalancer.onConfigurationChange(conf);
036    int numNodes = 40;
037    int numRegions = 6 * numNodes;
038    int replication = 40; // 40 replicas per region, one for each server
039    int numRegionsPerServer = 5;
040    int numTables = 10;
041    testWithClusterWithIteration(numNodes, numRegions, numRegionsPerServer, replication, numTables,
042      false, true);
043  }
044}