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.HBaseClassTestRule;
021import org.apache.hadoop.hbase.testclassification.MasterTests;
022import org.apache.hadoop.hbase.testclassification.MediumTests;
023import org.junit.ClassRule;
024import org.junit.Test;
025import org.junit.experimental.categories.Category;
026
027@Category({ MasterTests.class, MediumTests.class })
028public class TestStochasticLoadBalancerSmallCluster extends BalancerTestBase {
029
030  @ClassRule
031  public static final HBaseClassTestRule CLASS_RULE =
032    HBaseClassTestRule.forClass(TestStochasticLoadBalancerSmallCluster.class);
033
034  @Test
035  public void testSmallCluster() {
036    int numNodes = 10;
037    int numRegions = 1000;
038    int numRegionsPerServer = 40; // all servers except one
039    int replication = 1;
040    int numTables = 10;
041    testWithCluster(numNodes, numRegions, numRegionsPerServer, replication, numTables, true, true);
042  }
043
044  @Test
045  public void testSmallCluster2() {
046    int numNodes = 20;
047    int numRegions = 2000;
048    int numRegionsPerServer = 40; // all servers except one
049    int replication = 1;
050    int numTables = 10;
051    testWithCluster(numNodes, numRegions, numRegionsPerServer, replication, numTables, true, true);
052  }
053
054  @Test
055  public void testSmallCluster3() {
056    int numNodes = 20;
057    int numRegions = 2000;
058    int numRegionsPerServer = 1; // all servers except one
059    int replication = 1;
060    int numTables = 10;
061    /* fails because of max moves */
062    testWithCluster(numNodes, numRegions, numRegionsPerServer, replication, numTables, false,
063      false);
064  }
065}