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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.assertNotNull;</span> |
| <span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertTrue;</span> |
| <span class="source-line-no">022</span><span id="line-22">import static org.junit.Assert.fail;</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.File;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.io.IOException;</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 java.util.NavigableMap;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.fs.FileUtil;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.fs.Path;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.TableNotEnabledException;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.TableNotFoundException;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.client.Admin;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.client.Put;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.client.Result;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.client.Scan;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.client.Table;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.io.ImmutableBytesWritable;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.testclassification.LargeTests;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.testclassification.VerySlowMapReduceTests;</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.mapreduce.Counter;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.mapreduce.Counters;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.mapreduce.Job;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.junit.ClassRule;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.junit.Test;</span> |
| <span class="source-line-no">049</span><span id="line-49">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">050</span><span id="line-50">import org.slf4j.Logger;</span> |
| <span class="source-line-no">051</span><span id="line-51">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53">/**</span> |
| <span class="source-line-no">054</span><span id="line-54"> * Test Map/Reduce job over HBase tables. The map/reduce process we're testing on our tables is</span> |
| <span class="source-line-no">055</span><span id="line-55"> * simple - take every row in the table, reverse the value of a particular cell, and write it back</span> |
| <span class="source-line-no">056</span><span id="line-56"> * to the table.</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">@Category({ VerySlowMapReduceTests.class, LargeTests.class })</span> |
| <span class="source-line-no">060</span><span id="line-60">public class TestTableMapReduce extends TestTableMapReduceBase {</span> |
| <span class="source-line-no">061</span><span id="line-61"></span> |
| <span class="source-line-no">062</span><span id="line-62"> @ClassRule</span> |
| <span class="source-line-no">063</span><span id="line-63"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">064</span><span id="line-64"> HBaseClassTestRule.forClass(TestTableMapReduce.class);</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> private static final Logger LOG = LoggerFactory.getLogger(TestTableMapReduce.class);</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> @Override</span> |
| <span class="source-line-no">069</span><span id="line-69"> protected Logger getLog() {</span> |
| <span class="source-line-no">070</span><span id="line-70"> return LOG;</span> |
| <span class="source-line-no">071</span><span id="line-71"> }</span> |
| <span class="source-line-no">072</span><span id="line-72"></span> |
| <span class="source-line-no">073</span><span id="line-73"> /**</span> |
| <span class="source-line-no">074</span><span id="line-74"> * Pass the given key and processed record reduce</span> |
| <span class="source-line-no">075</span><span id="line-75"> */</span> |
| <span class="source-line-no">076</span><span id="line-76"> static class ProcessContentsMapper extends TableMapper<ImmutableBytesWritable, Put> {</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"> * Pass the key, and reversed value to reduce</span> |
| <span class="source-line-no">080</span><span id="line-80"> */</span> |
| <span class="source-line-no">081</span><span id="line-81"> @Override</span> |
| <span class="source-line-no">082</span><span id="line-82"> public void map(ImmutableBytesWritable key, Result value, Context context)</span> |
| <span class="source-line-no">083</span><span id="line-83"> throws IOException, InterruptedException {</span> |
| <span class="source-line-no">084</span><span id="line-84"> if (value.size() != 1) {</span> |
| <span class="source-line-no">085</span><span id="line-85"> throw new IOException("There should only be one input column");</span> |
| <span class="source-line-no">086</span><span id="line-86"> }</span> |
| <span class="source-line-no">087</span><span id="line-87"> Map<byte[], NavigableMap<byte[], NavigableMap<Long, byte[]>>> cf = value.getMap();</span> |
| <span class="source-line-no">088</span><span id="line-88"> if (!cf.containsKey(INPUT_FAMILY)) {</span> |
| <span class="source-line-no">089</span><span id="line-89"> throw new IOException(</span> |
| <span class="source-line-no">090</span><span id="line-90"> "Wrong input columns. Missing: '" + Bytes.toString(INPUT_FAMILY) + "'.");</span> |
| <span class="source-line-no">091</span><span id="line-91"> }</span> |
| <span class="source-line-no">092</span><span id="line-92"></span> |
| <span class="source-line-no">093</span><span id="line-93"> // Get the original value and reverse it</span> |
| <span class="source-line-no">094</span><span id="line-94"> String originalValue = Bytes.toString(value.getValue(INPUT_FAMILY, INPUT_FAMILY));</span> |
| <span class="source-line-no">095</span><span id="line-95"> StringBuilder newValue = new StringBuilder(originalValue);</span> |
| <span class="source-line-no">096</span><span id="line-96"> newValue.reverse();</span> |
| <span class="source-line-no">097</span><span id="line-97"> // Now set the value to be collected</span> |
| <span class="source-line-no">098</span><span id="line-98"> Put outval = new Put(key.get());</span> |
| <span class="source-line-no">099</span><span id="line-99"> outval.addColumn(OUTPUT_FAMILY, null, Bytes.toBytes(newValue.toString()));</span> |
| <span class="source-line-no">100</span><span id="line-100"> context.write(key, outval);</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"> @Override</span> |
| <span class="source-line-no">105</span><span id="line-105"> protected void runTestOnTable(Table table) throws IOException {</span> |
| <span class="source-line-no">106</span><span id="line-106"> Job job = null;</span> |
| <span class="source-line-no">107</span><span id="line-107"> try {</span> |
| <span class="source-line-no">108</span><span id="line-108"> LOG.info("Before map/reduce startup");</span> |
| <span class="source-line-no">109</span><span id="line-109"> job = new Job(table.getConfiguration(), "process column contents");</span> |
| <span class="source-line-no">110</span><span id="line-110"> job.setNumReduceTasks(1);</span> |
| <span class="source-line-no">111</span><span id="line-111"> Scan scan = new Scan();</span> |
| <span class="source-line-no">112</span><span id="line-112"> scan.addFamily(INPUT_FAMILY);</span> |
| <span class="source-line-no">113</span><span id="line-113"> TableMapReduceUtil.initTableMapperJob(table.getName().getNameAsString(), scan,</span> |
| <span class="source-line-no">114</span><span id="line-114"> ProcessContentsMapper.class, ImmutableBytesWritable.class, Put.class, job);</span> |
| <span class="source-line-no">115</span><span id="line-115"> TableMapReduceUtil.initTableReducerJob(table.getName().getNameAsString(),</span> |
| <span class="source-line-no">116</span><span id="line-116"> IdentityTableReducer.class, job);</span> |
| <span class="source-line-no">117</span><span id="line-117"> FileOutputFormat.setOutputPath(job, new Path("test"));</span> |
| <span class="source-line-no">118</span><span id="line-118"> LOG.info("Started " + table.getName().getNameAsString());</span> |
| <span class="source-line-no">119</span><span id="line-119"> assertTrue(job.waitForCompletion(true));</span> |
| <span class="source-line-no">120</span><span id="line-120"> LOG.info("After map/reduce completion");</span> |
| <span class="source-line-no">121</span><span id="line-121"></span> |
| <span class="source-line-no">122</span><span id="line-122"> // verify map-reduce results</span> |
| <span class="source-line-no">123</span><span id="line-123"> verify(table.getName());</span> |
| <span class="source-line-no">124</span><span id="line-124"></span> |
| <span class="source-line-no">125</span><span id="line-125"> verifyJobCountersAreEmitted(job);</span> |
| <span class="source-line-no">126</span><span id="line-126"> } catch (InterruptedException e) {</span> |
| <span class="source-line-no">127</span><span id="line-127"> throw new IOException(e);</span> |
| <span class="source-line-no">128</span><span id="line-128"> } catch (ClassNotFoundException e) {</span> |
| <span class="source-line-no">129</span><span id="line-129"> throw new IOException(e);</span> |
| <span class="source-line-no">130</span><span id="line-130"> } finally {</span> |
| <span class="source-line-no">131</span><span id="line-131"> table.close();</span> |
| <span class="source-line-no">132</span><span id="line-132"> if (job != null) {</span> |
| <span class="source-line-no">133</span><span id="line-133"> FileUtil.fullyDelete(new File(job.getConfiguration().get("hadoop.tmp.dir")));</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"> }</span> |
| <span class="source-line-no">137</span><span id="line-137"></span> |
| <span class="source-line-no">138</span><span id="line-138"> /**</span> |
| <span class="source-line-no">139</span><span id="line-139"> * Verify scan counters are emitted from the job</span> |
| <span class="source-line-no">140</span><span id="line-140"> */</span> |
| <span class="source-line-no">141</span><span id="line-141"> private void verifyJobCountersAreEmitted(Job job) throws IOException {</span> |
| <span class="source-line-no">142</span><span id="line-142"> Counters counters = job.getCounters();</span> |
| <span class="source-line-no">143</span><span id="line-143"> Counter counter =</span> |
| <span class="source-line-no">144</span><span id="line-144"> counters.findCounter(TableRecordReaderImpl.HBASE_COUNTER_GROUP_NAME, "RPC_CALLS");</span> |
| <span class="source-line-no">145</span><span id="line-145"> assertNotNull("Unable to find Job counter for HBase scan metrics, RPC_CALLS", counter);</span> |
| <span class="source-line-no">146</span><span id="line-146"> assertTrue("Counter value for RPC_CALLS should be larger than 0", counter.getValue() > 0);</span> |
| <span class="source-line-no">147</span><span id="line-147"> }</span> |
| <span class="source-line-no">148</span><span id="line-148"></span> |
| <span class="source-line-no">149</span><span id="line-149"> @Test(expected = TableNotEnabledException.class)</span> |
| <span class="source-line-no">150</span><span id="line-150"> public void testWritingToDisabledTable() throws IOException {</span> |
| <span class="source-line-no">151</span><span id="line-151"></span> |
| <span class="source-line-no">152</span><span id="line-152"> try (Admin admin = UTIL.getConnection().getAdmin();</span> |
| <span class="source-line-no">153</span><span id="line-153"> Table table = UTIL.getConnection().getTable(TABLE_FOR_NEGATIVE_TESTS)) {</span> |
| <span class="source-line-no">154</span><span id="line-154"> admin.disableTable(table.getName());</span> |
| <span class="source-line-no">155</span><span id="line-155"> runTestOnTable(table);</span> |
| <span class="source-line-no">156</span><span id="line-156"> fail("Should not have reached here, should have thrown an exception");</span> |
| <span class="source-line-no">157</span><span id="line-157"> }</span> |
| <span class="source-line-no">158</span><span id="line-158"> }</span> |
| <span class="source-line-no">159</span><span id="line-159"></span> |
| <span class="source-line-no">160</span><span id="line-160"> @Test(expected = TableNotFoundException.class)</span> |
| <span class="source-line-no">161</span><span id="line-161"> public void testWritingToNonExistentTable() throws IOException {</span> |
| <span class="source-line-no">162</span><span id="line-162"></span> |
| <span class="source-line-no">163</span><span id="line-163"> try (Table table = UTIL.getConnection().getTable(TableName.valueOf("table-does-not-exist"))) {</span> |
| <span class="source-line-no">164</span><span id="line-164"> runTestOnTable(table);</span> |
| <span class="source-line-no">165</span><span id="line-165"> fail("Should not have reached here, should have thrown an exception");</span> |
| <span class="source-line-no">166</span><span id="line-166"> }</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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| </pre> |
| </div> |
| </main> |
| </body> |
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