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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.master.balancer;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import static org.junit.Assert.assertNotNull;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import static org.junit.Assert.assertNull;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span><a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Map;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.ServerName;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.TableName;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.master.RackManager;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.net.DNSToSwitchMapping;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.junit.BeforeClass;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.slf4j.Logger;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.slf4j.LoggerFactory;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span>public class StochasticBalancerTestBase extends BalancerTestBase {<a name="line.36"></a> |
| <span class="sourceLineNo">037</span><a name="line.37"></a> |
| <span class="sourceLineNo">038</span> private static final Logger LOG = LoggerFactory.getLogger(StochasticBalancerTestBase.class);<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> protected static StochasticLoadBalancer loadBalancer;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> protected static DummyMetricsStochasticBalancer dummyMetricsStochasticBalancer =<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> new DummyMetricsStochasticBalancer();<a name="line.43"></a> |
| <span class="sourceLineNo">044</span><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> @BeforeClass<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> public static void beforeAllTests() throws Exception {<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> conf = HBaseConfiguration.create();<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> conf.setClass("hbase.util.ip.to.rack.determiner", MockMapping.class, DNSToSwitchMapping.class);<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> conf.setFloat("hbase.master.balancer.stochastic.localityCost", 0);<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> conf.setBoolean("hbase.master.balancer.stochastic.runMaxSteps", true);<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> loadBalancer = new StochasticLoadBalancer(dummyMetricsStochasticBalancer);<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> loadBalancer.setClusterInfoProvider(new DummyClusterInfoProvider(conf));<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> loadBalancer.initialize();<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> }<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> protected void testWithCluster(int numNodes, int numRegions, int numRegionsPerServer,<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> int replication, int numTables, boolean assertFullyBalanced,<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> boolean assertFullyBalancedForReplicas) {<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> Map<ServerName, List<RegionInfo>> serverMap =<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> createServerMap(numNodes, numRegions, numRegionsPerServer, replication, numTables);<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> testWithCluster(serverMap, null, assertFullyBalanced, assertFullyBalancedForReplicas);<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> }<a name="line.62"></a> |
| <span class="sourceLineNo">063</span><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> protected void testWithClusterWithIteration(int numNodes, int numRegions, int numRegionsPerServer,<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> int replication, int numTables, boolean assertFullyBalanced,<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> boolean assertFullyBalancedForReplicas) {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> Map<ServerName, List<RegionInfo>> serverMap =<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> createServerMap(numNodes, numRegions, numRegionsPerServer, replication, numTables);<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> testWithClusterWithIteration(serverMap, null, assertFullyBalanced,<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> assertFullyBalancedForReplicas);<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> }<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> protected void testWithCluster(Map<ServerName, List<RegionInfo>> serverMap,<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> RackManager rackManager, boolean assertFullyBalanced, boolean assertFullyBalancedForReplicas) {<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> List<ServerAndLoad> list = convertToList(serverMap);<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> LOG.info("Mock Cluster : " + printMock(list) + " " + printStats(list));<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> loadBalancer.setRackManager(rackManager);<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> // Run the balancer.<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> Map<TableName, Map<ServerName, List<RegionInfo>>> LoadOfAllTable =<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> (Map) mockClusterServersWithTables(serverMap);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> List<RegionPlan> plans = loadBalancer.balanceCluster(LoadOfAllTable);<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> assertNotNull("Initial cluster balance should produce plans.", plans);<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> // Check to see that this actually got to a stable place.<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> if (assertFullyBalanced || assertFullyBalancedForReplicas) {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> // Apply the plan to the mock cluster.<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> List<ServerAndLoad> balancedCluster = reconcile(list, plans, serverMap);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> // Print out the cluster loads to make debugging easier.<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> LOG.info("Mock after Balance : " + printMock(balancedCluster));<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> if (assertFullyBalanced) {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> assertClusterAsBalanced(balancedCluster);<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> LoadOfAllTable = (Map) mockClusterServersWithTables(serverMap);<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> List<RegionPlan> secondPlans = loadBalancer.balanceCluster(LoadOfAllTable);<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> assertNull("Given a requirement to be fully balanced, second attempt at plans should "<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> + "produce none.", secondPlans);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> if (assertFullyBalancedForReplicas) {<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> assertRegionReplicaPlacement(serverMap, rackManager);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> }<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> }<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> }<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> protected void testWithClusterWithIteration(Map<ServerName, List<RegionInfo>> serverMap,<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> RackManager rackManager, boolean assertFullyBalanced, boolean assertFullyBalancedForReplicas) {<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> List<ServerAndLoad> list = convertToList(serverMap);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> LOG.info("Mock Cluster : " + printMock(list) + " " + printStats(list));<a name="line.110"></a> |
| <span class="sourceLineNo">111</span><a name="line.111"></a> |
| <span class="sourceLineNo">112</span> loadBalancer.setRackManager(rackManager);<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> // Run the balancer.<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> Map<TableName, Map<ServerName, List<RegionInfo>>> LoadOfAllTable =<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> (Map) mockClusterServersWithTables(serverMap);<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> List<RegionPlan> plans = loadBalancer.balanceCluster(LoadOfAllTable);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> assertNotNull("Initial cluster balance should produce plans.", plans);<a name="line.117"></a> |
| <span class="sourceLineNo">118</span><a name="line.118"></a> |
| <span class="sourceLineNo">119</span> List<ServerAndLoad> balancedCluster = null;<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> // Run through iteration until done. Otherwise will be killed as test time out<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> while (plans != null && (assertFullyBalanced || assertFullyBalancedForReplicas)) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> // Apply the plan to the mock cluster.<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> balancedCluster = reconcile(list, plans, serverMap);<a name="line.123"></a> |
| <span class="sourceLineNo">124</span><a name="line.124"></a> |
| <span class="sourceLineNo">125</span> // Print out the cluster loads to make debugging easier.<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> LOG.info("Mock after balance: " + printMock(balancedCluster));<a name="line.126"></a> |
| <span class="sourceLineNo">127</span><a name="line.127"></a> |
| <span class="sourceLineNo">128</span> LoadOfAllTable = (Map) mockClusterServersWithTables(serverMap);<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> plans = loadBalancer.balanceCluster(LoadOfAllTable);<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span><a name="line.131"></a> |
| <span class="sourceLineNo">132</span> // Print out the cluster loads to make debugging easier.<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> LOG.info("Mock Final balance: " + printMock(balancedCluster));<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> if (assertFullyBalanced) {<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> assertNull("Given a requirement to be fully balanced, second attempt at plans should "<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> + "produce none.", plans);<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> }<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> if (assertFullyBalancedForReplicas) {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> assertRegionReplicaPlacement(serverMap, rackManager);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> }<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> }<a name="line.142"></a> |
| <span class="sourceLineNo">143</span>}<a name="line.143"></a> |
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| </pre> |
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