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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.assignment;</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.apache.hadoop.hbase.master.assignment.AssignmentTestingUtil.insertData;</span>
<span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertEquals;</span>
<span class="source-line-no">022</span><span id="line-22">import static org.junit.Assert.assertNotNull;</span>
<span class="source-line-no">023</span><span id="line-23">import static org.junit.Assert.assertTrue;</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.util.List;</span>
<span class="source-line-no">026</span><span id="line-26">import java.util.Map;</span>
<span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.conf.Configuration;</span>
<span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.HBaseClassTestRule;</span>
<span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.HBaseTestingUtil;</span>
<span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.ServerName;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.StartTestingClusterOption;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.TableName;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.client.RegionInfo;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.client.TableDescriptor;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;</span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.master.procedure.MasterProcedureTestingUtility;</span>
<span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;</span>
<span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility;</span>
<span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.regionserver.HRegion;</span>
<span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.testclassification.MasterTests;</span>
<span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.testclassification.MediumTests;</span>
<span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.util.Bytes;</span>
<span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.util.JVMClusterUtil;</span>
<span class="source-line-no">044</span><span id="line-44">import org.junit.After;</span>
<span class="source-line-no">045</span><span id="line-45">import org.junit.AfterClass;</span>
<span class="source-line-no">046</span><span id="line-46">import org.junit.Before;</span>
<span class="source-line-no">047</span><span id="line-47">import org.junit.BeforeClass;</span>
<span class="source-line-no">048</span><span id="line-48">import org.junit.ClassRule;</span>
<span class="source-line-no">049</span><span id="line-49">import org.junit.Rule;</span>
<span class="source-line-no">050</span><span id="line-50">import org.junit.Test;</span>
<span class="source-line-no">051</span><span id="line-51">import org.junit.experimental.categories.Category;</span>
<span class="source-line-no">052</span><span id="line-52">import org.junit.rules.TestName;</span>
<span class="source-line-no">053</span><span id="line-53">import org.slf4j.Logger;</span>
<span class="source-line-no">054</span><span id="line-54">import org.slf4j.LoggerFactory;</span>
<span class="source-line-no">055</span><span id="line-55"></span>
<span class="source-line-no">056</span><span id="line-56">@Category({ MasterTests.class, MediumTests.class })</span>
<span class="source-line-no">057</span><span id="line-57">public class TestRegionSplit {</span>
<span class="source-line-no">058</span><span id="line-58"></span>
<span class="source-line-no">059</span><span id="line-59"> @ClassRule</span>
<span class="source-line-no">060</span><span id="line-60"> public static final HBaseClassTestRule CLASS_RULE =</span>
<span class="source-line-no">061</span><span id="line-61"> HBaseClassTestRule.forClass(TestRegionSplit.class);</span>
<span class="source-line-no">062</span><span id="line-62"></span>
<span class="source-line-no">063</span><span id="line-63"> private static final Logger LOG = LoggerFactory.getLogger(TestRegionSplit.class);</span>
<span class="source-line-no">064</span><span id="line-64"></span>
<span class="source-line-no">065</span><span id="line-65"> protected static final HBaseTestingUtil UTIL = new HBaseTestingUtil();</span>
<span class="source-line-no">066</span><span id="line-66"></span>
<span class="source-line-no">067</span><span id="line-67"> private static String columnFamilyName = "cf";</span>
<span class="source-line-no">068</span><span id="line-68"></span>
<span class="source-line-no">069</span><span id="line-69"> private static final int startRowNum = 11;</span>
<span class="source-line-no">070</span><span id="line-70"> private static final int rowCount = 60;</span>
<span class="source-line-no">071</span><span id="line-71"></span>
<span class="source-line-no">072</span><span id="line-72"> @Rule</span>
<span class="source-line-no">073</span><span id="line-73"> public TestName name = new TestName();</span>
<span class="source-line-no">074</span><span id="line-74"></span>
<span class="source-line-no">075</span><span id="line-75"> private static void setupConf(Configuration conf) {</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"> @BeforeClass</span>
<span class="source-line-no">079</span><span id="line-79"> public static void setupCluster() throws Exception {</span>
<span class="source-line-no">080</span><span id="line-80"> setupConf(UTIL.getConfiguration());</span>
<span class="source-line-no">081</span><span id="line-81"> StartTestingClusterOption option =</span>
<span class="source-line-no">082</span><span id="line-82"> StartTestingClusterOption.builder().numMasters(1).numRegionServers(3).numDataNodes(3).build();</span>
<span class="source-line-no">083</span><span id="line-83"> UTIL.startMiniCluster(option);</span>
<span class="source-line-no">084</span><span id="line-84"> }</span>
<span class="source-line-no">085</span><span id="line-85"></span>
<span class="source-line-no">086</span><span id="line-86"> @AfterClass</span>
<span class="source-line-no">087</span><span id="line-87"> public static void cleanupTest() throws Exception {</span>
<span class="source-line-no">088</span><span id="line-88"> try {</span>
<span class="source-line-no">089</span><span id="line-89"> UTIL.shutdownMiniCluster();</span>
<span class="source-line-no">090</span><span id="line-90"> } catch (Exception e) {</span>
<span class="source-line-no">091</span><span id="line-91"> LOG.warn("failure shutting down cluster", e);</span>
<span class="source-line-no">092</span><span id="line-92"> }</span>
<span class="source-line-no">093</span><span id="line-93"> }</span>
<span class="source-line-no">094</span><span id="line-94"></span>
<span class="source-line-no">095</span><span id="line-95"> @Before</span>
<span class="source-line-no">096</span><span id="line-96"> public void setup() throws Exception {</span>
<span class="source-line-no">097</span><span id="line-97"> // Turn off the meta scanner so it don't remove parent on us.</span>
<span class="source-line-no">098</span><span id="line-98"> UTIL.getHBaseCluster().getMaster().setCatalogJanitorEnabled(false);</span>
<span class="source-line-no">099</span><span id="line-99"> // Disable compaction.</span>
<span class="source-line-no">100</span><span id="line-100"> for (int i = 0; i &lt; UTIL.getHBaseCluster().getLiveRegionServerThreads().size(); i++) {</span>
<span class="source-line-no">101</span><span id="line-101"> UTIL.getHBaseCluster().getRegionServer(i).getCompactSplitThread().switchCompaction(false);</span>
<span class="source-line-no">102</span><span id="line-102"> }</span>
<span class="source-line-no">103</span><span id="line-103"> }</span>
<span class="source-line-no">104</span><span id="line-104"></span>
<span class="source-line-no">105</span><span id="line-105"> @After</span>
<span class="source-line-no">106</span><span id="line-106"> public void tearDown() throws Exception {</span>
<span class="source-line-no">107</span><span id="line-107"> for (TableDescriptor htd : UTIL.getAdmin().listTableDescriptors()) {</span>
<span class="source-line-no">108</span><span id="line-108"> UTIL.deleteTable(htd.getTableName());</span>
<span class="source-line-no">109</span><span id="line-109"> }</span>
<span class="source-line-no">110</span><span id="line-110"> }</span>
<span class="source-line-no">111</span><span id="line-111"></span>
<span class="source-line-no">112</span><span id="line-112"> @Test</span>
<span class="source-line-no">113</span><span id="line-113"> public void testSplitTableRegion() throws Exception {</span>
<span class="source-line-no">114</span><span id="line-114"> final TableName tableName = TableName.valueOf(name.getMethodName());</span>
<span class="source-line-no">115</span><span id="line-115"> final ProcedureExecutor&lt;MasterProcedureEnv&gt; procExec = getMasterProcedureExecutor();</span>
<span class="source-line-no">116</span><span id="line-116"></span>
<span class="source-line-no">117</span><span id="line-117"> RegionInfo[] regions =</span>
<span class="source-line-no">118</span><span id="line-118"> MasterProcedureTestingUtility.createTable(procExec, tableName, null, columnFamilyName);</span>
<span class="source-line-no">119</span><span id="line-119"> insertData(UTIL, tableName, rowCount, startRowNum, columnFamilyName);</span>
<span class="source-line-no">120</span><span id="line-120"> int splitRowNum = startRowNum + rowCount / 2;</span>
<span class="source-line-no">121</span><span id="line-121"> byte[] splitKey = Bytes.toBytes("" + splitRowNum);</span>
<span class="source-line-no">122</span><span id="line-122"></span>
<span class="source-line-no">123</span><span id="line-123"> assertTrue("not able to find a splittable region", regions != null);</span>
<span class="source-line-no">124</span><span id="line-124"> assertTrue("not able to find a splittable region", regions.length == 1);</span>
<span class="source-line-no">125</span><span id="line-125"></span>
<span class="source-line-no">126</span><span id="line-126"> // Split region of the table</span>
<span class="source-line-no">127</span><span id="line-127"> long procId = procExec.submitProcedure(</span>
<span class="source-line-no">128</span><span id="line-128"> new SplitTableRegionProcedure(procExec.getEnvironment(), regions[0], splitKey));</span>
<span class="source-line-no">129</span><span id="line-129"> // Wait the completion</span>
<span class="source-line-no">130</span><span id="line-130"> ProcedureTestingUtility.waitProcedure(procExec, procId);</span>
<span class="source-line-no">131</span><span id="line-131"> ProcedureTestingUtility.assertProcNotFailed(procExec, procId);</span>
<span class="source-line-no">132</span><span id="line-132"></span>
<span class="source-line-no">133</span><span id="line-133"> assertTrue("not able to split table", UTIL.getHBaseCluster().getRegions(tableName).size() == 2);</span>
<span class="source-line-no">134</span><span id="line-134"></span>
<span class="source-line-no">135</span><span id="line-135"> // disable table</span>
<span class="source-line-no">136</span><span id="line-136"> UTIL.getAdmin().disableTable(tableName);</span>
<span class="source-line-no">137</span><span id="line-137"> Thread.sleep(500);</span>
<span class="source-line-no">138</span><span id="line-138"></span>
<span class="source-line-no">139</span><span id="line-139"> // stop master</span>
<span class="source-line-no">140</span><span id="line-140"> UTIL.getHBaseCluster().stopMaster(0);</span>
<span class="source-line-no">141</span><span id="line-141"> UTIL.getHBaseCluster().waitOnMaster(0);</span>
<span class="source-line-no">142</span><span id="line-142"> Thread.sleep(500);</span>
<span class="source-line-no">143</span><span id="line-143"></span>
<span class="source-line-no">144</span><span id="line-144"> // restart master</span>
<span class="source-line-no">145</span><span id="line-145"> JVMClusterUtil.MasterThread t = UTIL.getHBaseCluster().startMaster();</span>
<span class="source-line-no">146</span><span id="line-146"> Thread.sleep(500);</span>
<span class="source-line-no">147</span><span id="line-147"></span>
<span class="source-line-no">148</span><span id="line-148"> UTIL.invalidateConnection();</span>
<span class="source-line-no">149</span><span id="line-149"> // enable table</span>
<span class="source-line-no">150</span><span id="line-150"> UTIL.getAdmin().enableTable(tableName);</span>
<span class="source-line-no">151</span><span id="line-151"> Thread.sleep(500);</span>
<span class="source-line-no">152</span><span id="line-152"></span>
<span class="source-line-no">153</span><span id="line-153"> List&lt;HRegion&gt; tableRegions = UTIL.getHBaseCluster().getRegions(tableName);</span>
<span class="source-line-no">154</span><span id="line-154"> assertEquals("Table region not correct.", 2, tableRegions.size());</span>
<span class="source-line-no">155</span><span id="line-155"> Map&lt;RegionInfo, ServerName&gt; regionInfoMap = UTIL.getHBaseCluster().getMaster()</span>
<span class="source-line-no">156</span><span id="line-156"> .getAssignmentManager().getRegionStates().getRegionAssignments();</span>
<span class="source-line-no">157</span><span id="line-157"> assertEquals(regionInfoMap.get(tableRegions.get(0).getRegionInfo()),</span>
<span class="source-line-no">158</span><span id="line-158"> regionInfoMap.get(tableRegions.get(1).getRegionInfo()));</span>
<span class="source-line-no">159</span><span id="line-159"> }</span>
<span class="source-line-no">160</span><span id="line-160"></span>
<span class="source-line-no">161</span><span id="line-161"> @Test</span>
<span class="source-line-no">162</span><span id="line-162"> public void testSplitStoreFiles() throws Exception {</span>
<span class="source-line-no">163</span><span id="line-163"> final TableName tableName = TableName.valueOf(name.getMethodName());</span>
<span class="source-line-no">164</span><span id="line-164"> final ProcedureExecutor&lt;MasterProcedureEnv&gt; procExec = getMasterProcedureExecutor();</span>
<span class="source-line-no">165</span><span id="line-165"></span>
<span class="source-line-no">166</span><span id="line-166"> RegionInfo[] regions =</span>
<span class="source-line-no">167</span><span id="line-167"> MasterProcedureTestingUtility.createTable(procExec, tableName, null, columnFamilyName);</span>
<span class="source-line-no">168</span><span id="line-168"> // flush the memstore</span>
<span class="source-line-no">169</span><span id="line-169"> insertData(UTIL, tableName, rowCount, startRowNum, true, columnFamilyName);</span>
<span class="source-line-no">170</span><span id="line-170"></span>
<span class="source-line-no">171</span><span id="line-171"> // assert the hfile count of the table</span>
<span class="source-line-no">172</span><span id="line-172"> int storeFilesCountSum = 0;</span>
<span class="source-line-no">173</span><span id="line-173"> for (HRegion region : UTIL.getHBaseCluster().getRegions(tableName)) {</span>
<span class="source-line-no">174</span><span id="line-174"> storeFilesCountSum += region.getStore(Bytes.toBytes(columnFamilyName)).getStorefiles().size();</span>
<span class="source-line-no">175</span><span id="line-175"> }</span>
<span class="source-line-no">176</span><span id="line-176"> assertEquals(1, storeFilesCountSum);</span>
<span class="source-line-no">177</span><span id="line-177"></span>
<span class="source-line-no">178</span><span id="line-178"> // split at the start row</span>
<span class="source-line-no">179</span><span id="line-179"> byte[] splitKey = Bytes.toBytes("" + startRowNum);</span>
<span class="source-line-no">180</span><span id="line-180"></span>
<span class="source-line-no">181</span><span id="line-181"> assertNotNull("Not able to find a splittable region", regions);</span>
<span class="source-line-no">182</span><span id="line-182"> assertEquals("Not able to find a splittable region", 1, regions.length);</span>
<span class="source-line-no">183</span><span id="line-183"></span>
<span class="source-line-no">184</span><span id="line-184"> // Split region of the table</span>
<span class="source-line-no">185</span><span id="line-185"> long procId = procExec.submitProcedure(</span>
<span class="source-line-no">186</span><span id="line-186"> new SplitTableRegionProcedure(procExec.getEnvironment(), regions[0], splitKey));</span>
<span class="source-line-no">187</span><span id="line-187"> // Wait the completion</span>
<span class="source-line-no">188</span><span id="line-188"> ProcedureTestingUtility.waitProcedure(procExec, procId);</span>
<span class="source-line-no">189</span><span id="line-189"> ProcedureTestingUtility.assertProcNotFailed(procExec, procId);</span>
<span class="source-line-no">190</span><span id="line-190"></span>
<span class="source-line-no">191</span><span id="line-191"> assertEquals("Not able to split table", 2, UTIL.getHBaseCluster().getRegions(tableName).size());</span>
<span class="source-line-no">192</span><span id="line-192"></span>
<span class="source-line-no">193</span><span id="line-193"> // assert sum of the hfiles of all regions</span>
<span class="source-line-no">194</span><span id="line-194"> int childStoreFilesSum = 0;</span>
<span class="source-line-no">195</span><span id="line-195"> for (HRegion region : UTIL.getHBaseCluster().getRegions(tableName)) {</span>
<span class="source-line-no">196</span><span id="line-196"> childStoreFilesSum += region.getStore(Bytes.toBytes(columnFamilyName)).getStorefiles().size();</span>
<span class="source-line-no">197</span><span id="line-197"> }</span>
<span class="source-line-no">198</span><span id="line-198"> assertEquals(1, childStoreFilesSum);</span>
<span class="source-line-no">199</span><span id="line-199"></span>
<span class="source-line-no">200</span><span id="line-200"> List&lt;HRegion&gt; tableRegions = UTIL.getHBaseCluster().getRegions(tableName);</span>
<span class="source-line-no">201</span><span id="line-201"> assertEquals("Table region not correct.", 2, tableRegions.size());</span>
<span class="source-line-no">202</span><span id="line-202"> Map&lt;RegionInfo, ServerName&gt; regionInfoMap = UTIL.getHBaseCluster().getMaster()</span>
<span class="source-line-no">203</span><span id="line-203"> .getAssignmentManager().getRegionStates().getRegionAssignments();</span>
<span class="source-line-no">204</span><span id="line-204"> assertEquals(regionInfoMap.get(tableRegions.get(0).getRegionInfo()),</span>
<span class="source-line-no">205</span><span id="line-205"> regionInfoMap.get(tableRegions.get(1).getRegionInfo()));</span>
<span class="source-line-no">206</span><span id="line-206"> }</span>
<span class="source-line-no">207</span><span id="line-207"></span>
<span class="source-line-no">208</span><span id="line-208"> private ProcedureExecutor&lt;MasterProcedureEnv&gt; getMasterProcedureExecutor() {</span>
<span class="source-line-no">209</span><span id="line-209"> return UTIL.getHBaseCluster().getMaster().getMasterProcedureExecutor();</span>
<span class="source-line-no">210</span><span id="line-210"> }</span>
<span class="source-line-no">211</span><span id="line-211">}</span>
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