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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;</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.assertNotNull;</span> |
| <span class="source-line-no">022</span><span id="line-22">import static org.junit.Assert.assertTrue;</span> |
| <span class="source-line-no">023</span><span id="line-23"></span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.List;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.SingleProcessHBaseCluster;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.testclassification.MasterTests;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.testclassification.MediumTests;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.util.JVMClusterUtil;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.junit.ClassRule;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.junit.Test;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.slf4j.Logger;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40">@Category({ MasterTests.class, MediumTests.class })</span> |
| <span class="source-line-no">041</span><span id="line-41">public class TestRoundRobinAssignmentOnRestart extends AbstractTestRestartCluster {</span> |
| <span class="source-line-no">042</span><span id="line-42"></span> |
| <span class="source-line-no">043</span><span id="line-43"> @ClassRule</span> |
| <span class="source-line-no">044</span><span id="line-44"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">045</span><span id="line-45"> HBaseClassTestRule.forClass(TestRoundRobinAssignmentOnRestart.class);</span> |
| <span class="source-line-no">046</span><span id="line-46"></span> |
| <span class="source-line-no">047</span><span id="line-47"> private static final Logger LOG =</span> |
| <span class="source-line-no">048</span><span id="line-48"> LoggerFactory.getLogger(TestRoundRobinAssignmentOnRestart.class);</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50"> @Override</span> |
| <span class="source-line-no">051</span><span id="line-51"> protected boolean splitWALCoordinatedByZk() {</span> |
| <span class="source-line-no">052</span><span id="line-52"> return true;</span> |
| <span class="source-line-no">053</span><span id="line-53"> }</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> private final int regionNum = 10;</span> |
| <span class="source-line-no">056</span><span id="line-56"> private final int rsNum = 2;</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> /**</span> |
| <span class="source-line-no">059</span><span id="line-59"> * This tests retaining assignments on a cluster restart</span> |
| <span class="source-line-no">060</span><span id="line-60"> */</span> |
| <span class="source-line-no">061</span><span id="line-61"> @Test</span> |
| <span class="source-line-no">062</span><span id="line-62"> public void test() throws Exception {</span> |
| <span class="source-line-no">063</span><span id="line-63"> UTIL.startMiniCluster(rsNum);</span> |
| <span class="source-line-no">064</span><span id="line-64"> // Turn off balancer</span> |
| <span class="source-line-no">065</span><span id="line-65"> UTIL.getMiniHBaseCluster().getMaster().getMasterRpcServices().synchronousBalanceSwitch(false);</span> |
| <span class="source-line-no">066</span><span id="line-66"> LOG.info("\n\nCreating tables");</span> |
| <span class="source-line-no">067</span><span id="line-67"> for (TableName TABLE : TABLES) {</span> |
| <span class="source-line-no">068</span><span id="line-68"> UTIL.createMultiRegionTable(TABLE, FAMILY, regionNum);</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"> // Wait until all regions are assigned</span> |
| <span class="source-line-no">071</span><span id="line-71"> for (TableName TABLE : TABLES) {</span> |
| <span class="source-line-no">072</span><span id="line-72"> UTIL.waitTableEnabled(TABLE);</span> |
| <span class="source-line-no">073</span><span id="line-73"> }</span> |
| <span class="source-line-no">074</span><span id="line-74"> UTIL.waitUntilNoRegionsInTransition(60000);</span> |
| <span class="source-line-no">075</span><span id="line-75"></span> |
| <span class="source-line-no">076</span><span id="line-76"> SingleProcessHBaseCluster cluster = UTIL.getHBaseCluster();</span> |
| <span class="source-line-no">077</span><span id="line-77"> List<JVMClusterUtil.RegionServerThread> threads = cluster.getLiveRegionServerThreads();</span> |
| <span class="source-line-no">078</span><span id="line-78"> assertEquals(2, threads.size());</span> |
| <span class="source-line-no">079</span><span id="line-79"></span> |
| <span class="source-line-no">080</span><span id="line-80"> ServerName testServer = threads.get(0).getRegionServer().getServerName();</span> |
| <span class="source-line-no">081</span><span id="line-81"> int port = testServer.getPort();</span> |
| <span class="source-line-no">082</span><span id="line-82"> List<RegionInfo> regionInfos =</span> |
| <span class="source-line-no">083</span><span id="line-83"> cluster.getMaster().getAssignmentManager().getRegionsOnServer(testServer);</span> |
| <span class="source-line-no">084</span><span id="line-84"> LOG.debug("RegionServer {} has {} regions", testServer, regionInfos.size());</span> |
| <span class="source-line-no">085</span><span id="line-85"> assertTrue(regionInfos.size() >= (TABLES.length * regionNum / rsNum));</span> |
| <span class="source-line-no">086</span><span id="line-86"></span> |
| <span class="source-line-no">087</span><span id="line-87"> // Restart 1 regionserver</span> |
| <span class="source-line-no">088</span><span id="line-88"> cluster.stopRegionServer(testServer);</span> |
| <span class="source-line-no">089</span><span id="line-89"> cluster.waitForRegionServerToStop(testServer, 60000);</span> |
| <span class="source-line-no">090</span><span id="line-90"> cluster.getConf().setInt(HConstants.REGIONSERVER_PORT, port);</span> |
| <span class="source-line-no">091</span><span id="line-91"> cluster.startRegionServer();</span> |
| <span class="source-line-no">092</span><span id="line-92"></span> |
| <span class="source-line-no">093</span><span id="line-93"> HMaster master = UTIL.getMiniHBaseCluster().getMaster();</span> |
| <span class="source-line-no">094</span><span id="line-94"> List<ServerName> localServers = master.getServerManager().getOnlineServersList();</span> |
| <span class="source-line-no">095</span><span id="line-95"> ServerName newTestServer = null;</span> |
| <span class="source-line-no">096</span><span id="line-96"> for (ServerName serverName : localServers) {</span> |
| <span class="source-line-no">097</span><span id="line-97"> if (serverName.getAddress().equals(testServer.getAddress())) {</span> |
| <span class="source-line-no">098</span><span id="line-98"> newTestServer = serverName;</span> |
| <span class="source-line-no">099</span><span id="line-99"> break;</span> |
| <span class="source-line-no">100</span><span id="line-100"> }</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"> assertNotNull(newTestServer);</span> |
| <span class="source-line-no">103</span><span id="line-103"></span> |
| <span class="source-line-no">104</span><span id="line-104"> // Wait until all regions are assigned</span> |
| <span class="source-line-no">105</span><span id="line-105"> for (TableName TABLE : TABLES) {</span> |
| <span class="source-line-no">106</span><span id="line-106"> UTIL.waitTableAvailable(TABLE);</span> |
| <span class="source-line-no">107</span><span id="line-107"> }</span> |
| <span class="source-line-no">108</span><span id="line-108"> UTIL.waitUntilNoRegionsInTransition(60000);</span> |
| <span class="source-line-no">109</span><span id="line-109"></span> |
| <span class="source-line-no">110</span><span id="line-110"> List<RegionInfo> newRegionInfos =</span> |
| <span class="source-line-no">111</span><span id="line-111"> cluster.getMaster().getAssignmentManager().getRegionsOnServer(newTestServer);</span> |
| <span class="source-line-no">112</span><span id="line-112"> LOG.debug("RegionServer {} has {} regions", newTestServer, newRegionInfos.size());</span> |
| <span class="source-line-no">113</span><span id="line-113"> assertTrue("Should not retain all regions when restart",</span> |
| <span class="source-line-no">114</span><span id="line-114"> newRegionInfos.size() < regionInfos.size());</span> |
| <span class="source-line-no">115</span><span id="line-115"> }</span> |
| <span class="source-line-no">116</span><span id="line-116">}</span> |
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| </pre> |
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