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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.master.balancer;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import static org.junit.Assert.assertEquals;</span> |
| <span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertTrue;</span> |
| <span class="source-line-no">022</span><span id="line-22">import static org.mockito.Mockito.mock;</span> |
| <span class="source-line-no">023</span><span id="line-23">import static org.mockito.Mockito.when;</span> |
| <span class="source-line-no">024</span><span id="line-24"></span> |
| <span class="source-line-no">025</span><span id="line-25">import java.io.IOException;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.HashMap;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.HashSet;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.List;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.Map;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.Set;</span> |
| <span class="source-line-no">031</span><span id="line-31">import java.util.TreeMap;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.ClusterMetrics;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.RegionMetrics;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.ServerMetrics;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.Size;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.master.RegionPlan;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.rsgroup.RSGroupBasedLoadBalancer;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.rsgroup.RSGroupInfo;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.testclassification.LargeTests;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.net.DNSToSwitchMapping;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.junit.BeforeClass;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.junit.ClassRule;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.junit.Test;</span> |
| <span class="source-line-no">049</span><span id="line-49">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">050</span><span id="line-50"></span> |
| <span class="source-line-no">051</span><span id="line-51">/**</span> |
| <span class="source-line-no">052</span><span id="line-52"> * Test RSGroupBasedLoadBalancer with StochasticLoadBalancer as internal balancer</span> |
| <span class="source-line-no">053</span><span id="line-53"> */</span> |
| <span class="source-line-no">054</span><span id="line-54">@Category(LargeTests.class)</span> |
| <span class="source-line-no">055</span><span id="line-55">public class TestRSGroupBasedLoadBalancerWithStochasticLoadBalancerAsInternal</span> |
| <span class="source-line-no">056</span><span id="line-56"> extends RSGroupableBalancerTestBase {</span> |
| <span class="source-line-no">057</span><span id="line-57"> @ClassRule</span> |
| <span class="source-line-no">058</span><span id="line-58"> public static final HBaseClassTestRule CLASS_RULE = HBaseClassTestRule</span> |
| <span class="source-line-no">059</span><span id="line-59"> .forClass(TestRSGroupBasedLoadBalancerWithStochasticLoadBalancerAsInternal.class);</span> |
| <span class="source-line-no">060</span><span id="line-60"> private static RSGroupBasedLoadBalancer loadBalancer;</span> |
| <span class="source-line-no">061</span><span id="line-61"></span> |
| <span class="source-line-no">062</span><span id="line-62"> @BeforeClass</span> |
| <span class="source-line-no">063</span><span id="line-63"> public static void beforeAllTests() throws Exception {</span> |
| <span class="source-line-no">064</span><span id="line-64"> groups = new String[] { RSGroupInfo.DEFAULT_GROUP };</span> |
| <span class="source-line-no">065</span><span id="line-65"> servers = generateServers(3);</span> |
| <span class="source-line-no">066</span><span id="line-66"> groupMap = constructGroupInfo(servers, groups);</span> |
| <span class="source-line-no">067</span><span id="line-67"> tableDescs = constructTableDesc(false);</span> |
| <span class="source-line-no">068</span><span id="line-68"> conf.set("hbase.regions.slop", "0");</span> |
| <span class="source-line-no">069</span><span id="line-69"> conf.setFloat("hbase.master.balancer.stochastic.readRequestCost", 10000f);</span> |
| <span class="source-line-no">070</span><span id="line-70"> conf.set("hbase.rsgroup.grouploadbalancer.class",</span> |
| <span class="source-line-no">071</span><span id="line-71"> StochasticLoadBalancer.class.getCanonicalName());</span> |
| <span class="source-line-no">072</span><span id="line-72"> conf.setClass("hbase.util.ip.to.rack.determiner", MockMapping.class, DNSToSwitchMapping.class);</span> |
| <span class="source-line-no">073</span><span id="line-73"> loadBalancer = new RSGroupBasedLoadBalancer();</span> |
| <span class="source-line-no">074</span><span id="line-74"> loadBalancer.setMasterServices(getMockedMaster());</span> |
| <span class="source-line-no">075</span><span id="line-75"> loadBalancer.initialize();</span> |
| <span class="source-line-no">076</span><span id="line-76"> }</span> |
| <span class="source-line-no">077</span><span id="line-77"></span> |
| <span class="source-line-no">078</span><span id="line-78"> private ServerMetrics mockServerMetricsWithReadRequests(ServerName server,</span> |
| <span class="source-line-no">079</span><span id="line-79"> List<RegionInfo> regionsOnServer, long readRequestCount) {</span> |
| <span class="source-line-no">080</span><span id="line-80"> ServerMetrics serverMetrics = mock(ServerMetrics.class);</span> |
| <span class="source-line-no">081</span><span id="line-81"> Map<byte[], RegionMetrics> regionLoadMap = new TreeMap<>(Bytes.BYTES_COMPARATOR);</span> |
| <span class="source-line-no">082</span><span id="line-82"> for (RegionInfo info : regionsOnServer) {</span> |
| <span class="source-line-no">083</span><span id="line-83"> RegionMetrics rl = mock(RegionMetrics.class);</span> |
| <span class="source-line-no">084</span><span id="line-84"> when(rl.getReadRequestCount()).thenReturn(readRequestCount);</span> |
| <span class="source-line-no">085</span><span id="line-85"> when(rl.getCpRequestCount()).thenReturn(0L);</span> |
| <span class="source-line-no">086</span><span id="line-86"> when(rl.getWriteRequestCount()).thenReturn(0L);</span> |
| <span class="source-line-no">087</span><span id="line-87"> when(rl.getMemStoreSize()).thenReturn(Size.ZERO);</span> |
| <span class="source-line-no">088</span><span id="line-88"> when(rl.getStoreFileSize()).thenReturn(Size.ZERO);</span> |
| <span class="source-line-no">089</span><span id="line-89"> when(rl.getRegionSizeMB()).thenReturn(Size.ZERO);</span> |
| <span class="source-line-no">090</span><span id="line-90"> when(rl.getCurrentRegionCachedRatio()).thenReturn(0.0f);</span> |
| <span class="source-line-no">091</span><span id="line-91"> regionLoadMap.put(info.getRegionName(), rl);</span> |
| <span class="source-line-no">092</span><span id="line-92"> }</span> |
| <span class="source-line-no">093</span><span id="line-93"> when(serverMetrics.getRegionMetrics()).thenReturn(regionLoadMap);</span> |
| <span class="source-line-no">094</span><span id="line-94"> return serverMetrics;</span> |
| <span class="source-line-no">095</span><span id="line-95"> }</span> |
| <span class="source-line-no">096</span><span id="line-96"></span> |
| <span class="source-line-no">097</span><span id="line-97"> /**</span> |
| <span class="source-line-no">098</span><span id="line-98"> * Test HBASE-20791</span> |
| <span class="source-line-no">099</span><span id="line-99"> */</span> |
| <span class="source-line-no">100</span><span id="line-100"> @Test</span> |
| <span class="source-line-no">101</span><span id="line-101"> public void testBalanceCluster() throws IOException {</span> |
| <span class="source-line-no">102</span><span id="line-102"> // mock cluster State</span> |
| <span class="source-line-no">103</span><span id="line-103"> Map<ServerName, List<RegionInfo>> clusterState = new HashMap<ServerName, List<RegionInfo>>();</span> |
| <span class="source-line-no">104</span><span id="line-104"> ServerName serverA = servers.get(0);</span> |
| <span class="source-line-no">105</span><span id="line-105"> ServerName serverB = servers.get(1);</span> |
| <span class="source-line-no">106</span><span id="line-106"> ServerName serverC = servers.get(2);</span> |
| <span class="source-line-no">107</span><span id="line-107"> List<RegionInfo> regionsOnServerA = randomRegions(3);</span> |
| <span class="source-line-no">108</span><span id="line-108"> List<RegionInfo> regionsOnServerB = randomRegions(3);</span> |
| <span class="source-line-no">109</span><span id="line-109"> List<RegionInfo> regionsOnServerC = randomRegions(3);</span> |
| <span class="source-line-no">110</span><span id="line-110"> clusterState.put(serverA, regionsOnServerA);</span> |
| <span class="source-line-no">111</span><span id="line-111"> clusterState.put(serverB, regionsOnServerB);</span> |
| <span class="source-line-no">112</span><span id="line-112"> clusterState.put(serverC, regionsOnServerC);</span> |
| <span class="source-line-no">113</span><span id="line-113"> // mock ClusterMetrics</span> |
| <span class="source-line-no">114</span><span id="line-114"> Map<ServerName, ServerMetrics> serverMetricsMap = new TreeMap<>();</span> |
| <span class="source-line-no">115</span><span id="line-115"> serverMetricsMap.put(serverA, mockServerMetricsWithReadRequests(serverA, regionsOnServerA, 0));</span> |
| <span class="source-line-no">116</span><span id="line-116"> serverMetricsMap.put(serverB, mockServerMetricsWithReadRequests(serverB, regionsOnServerB, 0));</span> |
| <span class="source-line-no">117</span><span id="line-117"> serverMetricsMap.put(serverC, mockServerMetricsWithReadRequests(serverC, regionsOnServerC, 0));</span> |
| <span class="source-line-no">118</span><span id="line-118"> ClusterMetrics clusterStatus = mock(ClusterMetrics.class);</span> |
| <span class="source-line-no">119</span><span id="line-119"> when(clusterStatus.getLiveServerMetrics()).thenReturn(serverMetricsMap);</span> |
| <span class="source-line-no">120</span><span id="line-120"> loadBalancer.updateClusterMetrics(clusterStatus);</span> |
| <span class="source-line-no">121</span><span id="line-121"></span> |
| <span class="source-line-no">122</span><span id="line-122"> // ReadRequestCostFunction are Rate based, So doing setClusterMetrics again</span> |
| <span class="source-line-no">123</span><span id="line-123"> // this time, regions on serverA with more readRequestCount load</span> |
| <span class="source-line-no">124</span><span id="line-124"> // serverA : 1000,1000,1000</span> |
| <span class="source-line-no">125</span><span id="line-125"> // serverB : 0,0,0</span> |
| <span class="source-line-no">126</span><span id="line-126"> // serverC : 0,0,0</span> |
| <span class="source-line-no">127</span><span id="line-127"> // so should move two regions from serverA to serverB & serverC</span> |
| <span class="source-line-no">128</span><span id="line-128"> serverMetricsMap = new TreeMap<>();</span> |
| <span class="source-line-no">129</span><span id="line-129"> serverMetricsMap.put(serverA,</span> |
| <span class="source-line-no">130</span><span id="line-130"> mockServerMetricsWithReadRequests(serverA, regionsOnServerA, 1000));</span> |
| <span class="source-line-no">131</span><span id="line-131"> serverMetricsMap.put(serverB, mockServerMetricsWithReadRequests(serverB, regionsOnServerB, 0));</span> |
| <span class="source-line-no">132</span><span id="line-132"> serverMetricsMap.put(serverC, mockServerMetricsWithReadRequests(serverC, regionsOnServerC, 0));</span> |
| <span class="source-line-no">133</span><span id="line-133"> clusterStatus = mock(ClusterMetrics.class);</span> |
| <span class="source-line-no">134</span><span id="line-134"> when(clusterStatus.getLiveServerMetrics()).thenReturn(serverMetricsMap);</span> |
| <span class="source-line-no">135</span><span id="line-135"> loadBalancer.updateClusterMetrics(clusterStatus);</span> |
| <span class="source-line-no">136</span><span id="line-136"></span> |
| <span class="source-line-no">137</span><span id="line-137"> Map<TableName, Map<ServerName, List<RegionInfo>>> LoadOfAllTable =</span> |
| <span class="source-line-no">138</span><span id="line-138"> (Map) mockClusterServersWithTables(clusterState);</span> |
| <span class="source-line-no">139</span><span id="line-139"> List<RegionPlan> plans = loadBalancer.balanceCluster(LoadOfAllTable);</span> |
| <span class="source-line-no">140</span><span id="line-140"> Set<RegionInfo> regionsMoveFromServerA = new HashSet<>();</span> |
| <span class="source-line-no">141</span><span id="line-141"> Set<ServerName> targetServers = new HashSet<>();</span> |
| <span class="source-line-no">142</span><span id="line-142"> for (RegionPlan plan : plans) {</span> |
| <span class="source-line-no">143</span><span id="line-143"> if (plan.getSource().equals(serverA)) {</span> |
| <span class="source-line-no">144</span><span id="line-144"> regionsMoveFromServerA.add(plan.getRegionInfo());</span> |
| <span class="source-line-no">145</span><span id="line-145"> targetServers.add(plan.getDestination());</span> |
| <span class="source-line-no">146</span><span id="line-146"> }</span> |
| <span class="source-line-no">147</span><span id="line-147"> }</span> |
| <span class="source-line-no">148</span><span id="line-148"> // should move 2 regions from serverA, one moves to serverB, the other moves to serverC</span> |
| <span class="source-line-no">149</span><span id="line-149"> assertEquals(2, regionsMoveFromServerA.size());</span> |
| <span class="source-line-no">150</span><span id="line-150"> assertEquals(2, targetServers.size());</span> |
| <span class="source-line-no">151</span><span id="line-151"> assertTrue(regionsOnServerA.containsAll(regionsMoveFromServerA));</span> |
| <span class="source-line-no">152</span><span id="line-152"> }</span> |
| <span class="source-line-no">153</span><span id="line-153">}</span> |
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