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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.mapreduce;</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.assertNull;</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.io.IOException;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.ArrayList;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.Arrays;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.Collections;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.Comparator;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.List;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.HBaseConfiguration;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.client.Scan;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.testclassification.SmallTests;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.mapreduce.InputSplit;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.mapreduce.JobContext;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.junit.ClassRule;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.junit.Test;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.mockito.Mockito;</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44">/**</span> |
| <span class="source-line-no">045</span><span id="line-45"> * Basic test of {@link RoundRobinTableInputFormat}; i.e. RRTIF.</span> |
| <span class="source-line-no">046</span><span id="line-46"> */</span> |
| <span class="source-line-no">047</span><span id="line-47">@Category({ SmallTests.class })</span> |
| <span class="source-line-no">048</span><span id="line-48">public class TestRoundRobinTableInputFormat {</span> |
| <span class="source-line-no">049</span><span id="line-49"> @ClassRule</span> |
| <span class="source-line-no">050</span><span id="line-50"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">051</span><span id="line-51"> HBaseClassTestRule.forClass(TestRoundRobinTableInputFormat.class);</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53"> private static final int SERVERS_COUNT = 5;</span> |
| <span class="source-line-no">054</span><span id="line-54"> private static final String[] KEYS = { "aa", "ab", "ac", "ad", "ae", "ba", "bb", "bc", "bd", "be",</span> |
| <span class="source-line-no">055</span><span id="line-55"> "ca", "cb", "cc", "cd", "ce", "da", "db", "dc", "dd", "de", "ea", "eb", "ec", "ed", "ee", "fa",</span> |
| <span class="source-line-no">056</span><span id="line-56"> "fb", "fc", "fd", "fe", "ga", "gb", "gc", "gd", "ge", "ha", "hb", "hc", "hd", "he", "ia", "ib",</span> |
| <span class="source-line-no">057</span><span id="line-57"> "ic", "id", "ie", "ja", "jb", "jc", "jd", "je", "jf" };</span> |
| <span class="source-line-no">058</span><span id="line-58"></span> |
| <span class="source-line-no">059</span><span id="line-59"> /**</span> |
| <span class="source-line-no">060</span><span id="line-60"> * Test default behavior.</span> |
| <span class="source-line-no">061</span><span id="line-61"> */</span> |
| <span class="source-line-no">062</span><span id="line-62"> @Test</span> |
| <span class="source-line-no">063</span><span id="line-63"> public void testRoundRobinSplit() throws IOException, InterruptedException {</span> |
| <span class="source-line-no">064</span><span id="line-64"> final List<InputSplit> splits = createSplits();</span> |
| <span class="source-line-no">065</span><span id="line-65"> Collections.shuffle(splits);</span> |
| <span class="source-line-no">066</span><span id="line-66"> List<InputSplit> sortedSplits = new RoundRobinTableInputFormat().roundRobin(splits);</span> |
| <span class="source-line-no">067</span><span id="line-67"> testDistribution(sortedSplits);</span> |
| <span class="source-line-no">068</span><span id="line-68"> // Now test that order is preserved even after being passed through the SplitComparator</span> |
| <span class="source-line-no">069</span><span id="line-69"> // that sorts InputSplit by length as is done up in Hadoop in JobSubmitter.</span> |
| <span class="source-line-no">070</span><span id="line-70"> List<InputSplit> copy = new ArrayList<>(sortedSplits);</span> |
| <span class="source-line-no">071</span><span id="line-71"> Arrays.sort(copy.toArray(new InputSplit[0]), new SplitComparator());</span> |
| <span class="source-line-no">072</span><span id="line-72"> // Assert the sort is retained even after passing through SplitComparator.</span> |
| <span class="source-line-no">073</span><span id="line-73"> for (int i = 0; i < sortedSplits.size(); i++) {</span> |
| <span class="source-line-no">074</span><span id="line-74"> TableSplit sortedTs = (TableSplit) sortedSplits.get(i);</span> |
| <span class="source-line-no">075</span><span id="line-75"> TableSplit copyTs = (TableSplit) copy.get(i);</span> |
| <span class="source-line-no">076</span><span id="line-76"> assertEquals(sortedTs.getEncodedRegionName(), copyTs.getEncodedRegionName());</span> |
| <span class="source-line-no">077</span><span id="line-77"> }</span> |
| <span class="source-line-no">078</span><span id="line-78"> }</span> |
| <span class="source-line-no">079</span><span id="line-79"></span> |
| <span class="source-line-no">080</span><span id="line-80"> /** Returns Splits made out of {@link #KEYS}. Splits are for five Servers. Length is ZERO! */</span> |
| <span class="source-line-no">081</span><span id="line-81"> private List<InputSplit> createSplits() {</span> |
| <span class="source-line-no">082</span><span id="line-82"> List<InputSplit> splits = new ArrayList<>(KEYS.length - 1);</span> |
| <span class="source-line-no">083</span><span id="line-83"> for (int i = 0; i < KEYS.length - 1; i++) {</span> |
| <span class="source-line-no">084</span><span id="line-84"> InputSplit split =</span> |
| <span class="source-line-no">085</span><span id="line-85"> new TableSplit(TableName.valueOf("test"), new Scan(), Bytes.toBytes(KEYS[i]),</span> |
| <span class="source-line-no">086</span><span id="line-86"> Bytes.toBytes(KEYS[i + 1]), String.valueOf(i % SERVERS_COUNT + 1), "", 0);</span> |
| <span class="source-line-no">087</span><span id="line-87"> splits.add(split);</span> |
| <span class="source-line-no">088</span><span id="line-88"> }</span> |
| <span class="source-line-no">089</span><span id="line-89"> return splits;</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"></span> |
| <span class="source-line-no">092</span><span id="line-92"> private void testDistribution(List<InputSplit> list) throws IOException, InterruptedException {</span> |
| <span class="source-line-no">093</span><span id="line-93"> for (int i = 0; i < KEYS.length / SERVERS_COUNT; i++) {</span> |
| <span class="source-line-no">094</span><span id="line-94"> int[] counts = new int[SERVERS_COUNT];</span> |
| <span class="source-line-no">095</span><span id="line-95"> for (int j = i * SERVERS_COUNT; j < i * SERVERS_COUNT + SERVERS_COUNT; j++) {</span> |
| <span class="source-line-no">096</span><span id="line-96"> counts[Integer.parseInt(list.get(j).getLocations()[0]) - 1]++;</span> |
| <span class="source-line-no">097</span><span id="line-97"> }</span> |
| <span class="source-line-no">098</span><span id="line-98"> for (int value : counts) {</span> |
| <span class="source-line-no">099</span><span id="line-99"> assertEquals(value, 1);</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"> }</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"> * Private comparator copied from private JobSubmmiter Hadoop class...</span> |
| <span class="source-line-no">106</span><span id="line-106"> * hadoop/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java</span> |
| <span class="source-line-no">107</span><span id="line-107"> * Used so we can run the sort done up in JobSubmitter here in tests.</span> |
| <span class="source-line-no">108</span><span id="line-108"> */</span> |
| <span class="source-line-no">109</span><span id="line-109"> private static class SplitComparator implements Comparator<InputSplit> {</span> |
| <span class="source-line-no">110</span><span id="line-110"> @Override</span> |
| <span class="source-line-no">111</span><span id="line-111"> public int compare(InputSplit o1, InputSplit o2) {</span> |
| <span class="source-line-no">112</span><span id="line-112"> try {</span> |
| <span class="source-line-no">113</span><span id="line-113"> return Long.compare(o1.getLength(), o2.getLength());</span> |
| <span class="source-line-no">114</span><span id="line-114"> } catch (IOException | InterruptedException e) {</span> |
| <span class="source-line-no">115</span><span id="line-115"> throw new RuntimeException("exception in compare", e);</span> |
| <span class="source-line-no">116</span><span id="line-116"> }</span> |
| <span class="source-line-no">117</span><span id="line-117"> }</span> |
| <span class="source-line-no">118</span><span id="line-118"> }</span> |
| <span class="source-line-no">119</span><span id="line-119"></span> |
| <span class="source-line-no">120</span><span id="line-120"> /**</span> |
| <span class="source-line-no">121</span><span id="line-121"> * Assert that lengths are descending. RRTIF writes lengths in descending order so any subsequent</span> |
| <span class="source-line-no">122</span><span id="line-122"> * sort using dump SplitComparator as is done in JobSubmitter up in Hadoop keeps our RRTIF</span> |
| <span class="source-line-no">123</span><span id="line-123"> * ordering.</span> |
| <span class="source-line-no">124</span><span id="line-124"> */</span> |
| <span class="source-line-no">125</span><span id="line-125"> private void assertLengthDescending(List<InputSplit> list)</span> |
| <span class="source-line-no">126</span><span id="line-126"> throws IOException, InterruptedException {</span> |
| <span class="source-line-no">127</span><span id="line-127"> long previousLength = Long.MAX_VALUE;</span> |
| <span class="source-line-no">128</span><span id="line-128"> for (InputSplit is : list) {</span> |
| <span class="source-line-no">129</span><span id="line-129"> long length = is.getLength();</span> |
| <span class="source-line-no">130</span><span id="line-130"> assertTrue(previousLength + " " + length, previousLength > length);</span> |
| <span class="source-line-no">131</span><span id="line-131"> previousLength = length;</span> |
| <span class="source-line-no">132</span><span id="line-132"> }</span> |
| <span class="source-line-no">133</span><span id="line-133"> }</span> |
| <span class="source-line-no">134</span><span id="line-134"></span> |
| <span class="source-line-no">135</span><span id="line-135"> /**</span> |
| <span class="source-line-no">136</span><span id="line-136"> * Test that configure/unconfigure set and properly undo the HBASE_REGIONSIZECALCULATOR_ENABLE</span> |
| <span class="source-line-no">137</span><span id="line-137"> * configuration.</span> |
| <span class="source-line-no">138</span><span id="line-138"> */</span> |
| <span class="source-line-no">139</span><span id="line-139"> @Test</span> |
| <span class="source-line-no">140</span><span id="line-140"> public void testConfigureUnconfigure() {</span> |
| <span class="source-line-no">141</span><span id="line-141"> Configuration configuration = HBaseConfiguration.create();</span> |
| <span class="source-line-no">142</span><span id="line-142"> RoundRobinTableInputFormat rrtif = new RoundRobinTableInputFormat();</span> |
| <span class="source-line-no">143</span><span id="line-143"> rrtif.setConf(configuration);</span> |
| <span class="source-line-no">144</span><span id="line-144"> JobContext jobContext = Mockito.mock(JobContext.class);</span> |
| <span class="source-line-no">145</span><span id="line-145"> Mockito.when(jobContext.getConfiguration()).thenReturn(configuration);</span> |
| <span class="source-line-no">146</span><span id="line-146"> // Assert when done, HBASE_REGIONSIZECALCULATOR_ENABLE is still unset.</span> |
| <span class="source-line-no">147</span><span id="line-147"> configuration.unset(RoundRobinTableInputFormat.HBASE_REGIONSIZECALCULATOR_ENABLE);</span> |
| <span class="source-line-no">148</span><span id="line-148"> rrtif.configure();</span> |
| <span class="source-line-no">149</span><span id="line-149"> rrtif.unconfigure();</span> |
| <span class="source-line-no">150</span><span id="line-150"> String value = configuration.get(RoundRobinTableInputFormat.HBASE_REGIONSIZECALCULATOR_ENABLE);</span> |
| <span class="source-line-no">151</span><span id="line-151"> assertNull(value);</span> |
| <span class="source-line-no">152</span><span id="line-152"> // Assert HBASE_REGIONSIZECALCULATOR_ENABLE is still false when done.</span> |
| <span class="source-line-no">153</span><span id="line-153"> checkRetainsBooleanValue(jobContext, rrtif, false);</span> |
| <span class="source-line-no">154</span><span id="line-154"> // Assert HBASE_REGIONSIZECALCULATOR_ENABLE is still true when done.</span> |
| <span class="source-line-no">155</span><span id="line-155"> checkRetainsBooleanValue(jobContext, rrtif, true);</span> |
| <span class="source-line-no">156</span><span id="line-156"> }</span> |
| <span class="source-line-no">157</span><span id="line-157"></span> |
| <span class="source-line-no">158</span><span id="line-158"> private void checkRetainsBooleanValue(JobContext jobContext, RoundRobinTableInputFormat rrtif,</span> |
| <span class="source-line-no">159</span><span id="line-159"> final boolean b) {</span> |
| <span class="source-line-no">160</span><span id="line-160"> jobContext.getConfiguration()</span> |
| <span class="source-line-no">161</span><span id="line-161"> .setBoolean(RoundRobinTableInputFormat.HBASE_REGIONSIZECALCULATOR_ENABLE, b);</span> |
| <span class="source-line-no">162</span><span id="line-162"> rrtif.configure();</span> |
| <span class="source-line-no">163</span><span id="line-163"> rrtif.unconfigure();</span> |
| <span class="source-line-no">164</span><span id="line-164"> String value = jobContext.getConfiguration()</span> |
| <span class="source-line-no">165</span><span id="line-165"> .get(RoundRobinTableInputFormat.HBASE_REGIONSIZECALCULATOR_ENABLE);</span> |
| <span class="source-line-no">166</span><span id="line-166"> assertEquals(b, Boolean.valueOf(value));</span> |
| <span class="source-line-no">167</span><span id="line-167"> }</span> |
| <span class="source-line-no">168</span><span id="line-168">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
