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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.assertNull;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.List;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Map;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.ServerName;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.TableName;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.testclassification.LargeTests;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.testclassification.MasterTests;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.junit.ClassRule;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.junit.Test;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.junit.experimental.categories.Category;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.slf4j.Logger;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.slf4j.LoggerFactory;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span>@Category({ MasterTests.class, LargeTests.class })<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>public class TestStochasticLoadBalancerBalanceCluster extends StochasticBalancerTestBase {<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> @ClassRule<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> HBaseClassTestRule.forClass(TestStochasticLoadBalancerBalanceCluster.class);<a name="line.42"></a> |
| <span class="sourceLineNo">043</span><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private static final Logger LOG =<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> LoggerFactory.getLogger(TestStochasticLoadBalancerBalanceCluster.class);<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> /**<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * Test the load balancing algorithm.<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * <p><a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * Invariant is that all servers should be hosting either floor(average) or ceiling(average)<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> */<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> @Test<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> public void testBalanceCluster() throws Exception {<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> loadBalancer.onConfigurationChange(conf);<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> for (int[] mockCluster : clusterStateMocks) {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> Map<ServerName, List<RegionInfo>> servers = mockClusterServers(mockCluster);<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> List<ServerAndLoad> list = convertToList(servers);<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> LOG.info("Mock Cluster : " + printMock(list) + " " + printStats(list));<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> Map<TableName, Map<ServerName, List<RegionInfo>>> LoadOfAllTable =<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> (Map) mockClusterServersWithTables(servers);<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> List<RegionPlan> plans = loadBalancer.balanceCluster(LoadOfAllTable);<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> List<ServerAndLoad> balancedCluster = reconcile(list, plans, servers);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> LOG.info("Mock Balance : " + printMock(balancedCluster));<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> assertClusterAsBalanced(balancedCluster);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> LoadOfAllTable = (Map) mockClusterServersWithTables(servers);<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> List<RegionPlan> secondPlans = loadBalancer.balanceCluster(LoadOfAllTable);<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> assertNull(secondPlans);<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> for (Map.Entry<ServerName, List<RegionInfo>> entry : servers.entrySet()) {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> returnRegions(entry.getValue());<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> returnServer(entry.getKey());<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> }<a name="line.73"></a> |
| <span class="sourceLineNo">074</span>}<a name="line.74"></a> |
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