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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"></span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.HBaseTestingUtil;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.io.ImmutableBytesWritable;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.testclassification.MapReduceTests;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.testclassification.SmallTests;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.junit.ClassRule;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.junit.Test;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">033</span><span id="line-33"></span> |
| <span class="source-line-no">034</span><span id="line-34">/**</span> |
| <span class="source-line-no">035</span><span id="line-35"> * Test of simple partitioner.</span> |
| <span class="source-line-no">036</span><span id="line-36"> */</span> |
| <span class="source-line-no">037</span><span id="line-37">@Category({ MapReduceTests.class, SmallTests.class })</span> |
| <span class="source-line-no">038</span><span id="line-38">public class TestSimpleTotalOrderPartitioner {</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40"> @ClassRule</span> |
| <span class="source-line-no">041</span><span id="line-41"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">042</span><span id="line-42"> HBaseClassTestRule.forClass(TestSimpleTotalOrderPartitioner.class);</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44"> protected final static HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();</span> |
| <span class="source-line-no">045</span><span id="line-45"> Configuration conf = TEST_UTIL.getConfiguration();</span> |
| <span class="source-line-no">046</span><span id="line-46"></span> |
| <span class="source-line-no">047</span><span id="line-47"> @Test</span> |
| <span class="source-line-no">048</span><span id="line-48"> public void testSplit() throws Exception {</span> |
| <span class="source-line-no">049</span><span id="line-49"> String start = "a";</span> |
| <span class="source-line-no">050</span><span id="line-50"> String end = "{";</span> |
| <span class="source-line-no">051</span><span id="line-51"> SimpleTotalOrderPartitioner<byte[]> p = new SimpleTotalOrderPartitioner<>();</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53"> this.conf.set(SimpleTotalOrderPartitioner.START, start);</span> |
| <span class="source-line-no">054</span><span id="line-54"> this.conf.set(SimpleTotalOrderPartitioner.END, end);</span> |
| <span class="source-line-no">055</span><span id="line-55"> p.setConf(this.conf);</span> |
| <span class="source-line-no">056</span><span id="line-56"> ImmutableBytesWritable c = new ImmutableBytesWritable(Bytes.toBytes("c"));</span> |
| <span class="source-line-no">057</span><span id="line-57"> // If one reduce, partition should be 0.</span> |
| <span class="source-line-no">058</span><span id="line-58"> int partition = p.getPartition(c, HConstants.EMPTY_BYTE_ARRAY, 1);</span> |
| <span class="source-line-no">059</span><span id="line-59"> assertEquals(0, partition);</span> |
| <span class="source-line-no">060</span><span id="line-60"> // If two reduces, partition should be 0.</span> |
| <span class="source-line-no">061</span><span id="line-61"> partition = p.getPartition(c, HConstants.EMPTY_BYTE_ARRAY, 2);</span> |
| <span class="source-line-no">062</span><span id="line-62"> assertEquals(0, partition);</span> |
| <span class="source-line-no">063</span><span id="line-63"> // Divide in 3.</span> |
| <span class="source-line-no">064</span><span id="line-64"> partition = p.getPartition(c, HConstants.EMPTY_BYTE_ARRAY, 3);</span> |
| <span class="source-line-no">065</span><span id="line-65"> assertEquals(0, partition);</span> |
| <span class="source-line-no">066</span><span id="line-66"> ImmutableBytesWritable q = new ImmutableBytesWritable(Bytes.toBytes("q"));</span> |
| <span class="source-line-no">067</span><span id="line-67"> partition = p.getPartition(q, HConstants.EMPTY_BYTE_ARRAY, 2);</span> |
| <span class="source-line-no">068</span><span id="line-68"> assertEquals(1, partition);</span> |
| <span class="source-line-no">069</span><span id="line-69"> partition = p.getPartition(q, HConstants.EMPTY_BYTE_ARRAY, 3);</span> |
| <span class="source-line-no">070</span><span id="line-70"> assertEquals(2, partition);</span> |
| <span class="source-line-no">071</span><span id="line-71"> // What about end and start keys.</span> |
| <span class="source-line-no">072</span><span id="line-72"> ImmutableBytesWritable startBytes = new ImmutableBytesWritable(Bytes.toBytes(start));</span> |
| <span class="source-line-no">073</span><span id="line-73"> partition = p.getPartition(startBytes, HConstants.EMPTY_BYTE_ARRAY, 2);</span> |
| <span class="source-line-no">074</span><span id="line-74"> assertEquals(0, partition);</span> |
| <span class="source-line-no">075</span><span id="line-75"> partition = p.getPartition(startBytes, HConstants.EMPTY_BYTE_ARRAY, 3);</span> |
| <span class="source-line-no">076</span><span id="line-76"> assertEquals(0, partition);</span> |
| <span class="source-line-no">077</span><span id="line-77"> ImmutableBytesWritable endBytes = new ImmutableBytesWritable(Bytes.toBytes("z"));</span> |
| <span class="source-line-no">078</span><span id="line-78"> partition = p.getPartition(endBytes, HConstants.EMPTY_BYTE_ARRAY, 2);</span> |
| <span class="source-line-no">079</span><span id="line-79"> assertEquals(1, partition);</span> |
| <span class="source-line-no">080</span><span id="line-80"> partition = p.getPartition(endBytes, HConstants.EMPTY_BYTE_ARRAY, 3);</span> |
| <span class="source-line-no">081</span><span id="line-81"> assertEquals(2, partition);</span> |
| <span class="source-line-no">082</span><span id="line-82"> }</span> |
| <span class="source-line-no">083</span><span id="line-83"></span> |
| <span class="source-line-no">084</span><span id="line-84">}</span> |
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