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| <pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import static org.junit.Assert.assertEquals;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import static org.junit.Assert.assertNotEquals;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span><a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.HashMap;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Map;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.fs.StorageType;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.testclassification.MiscTests;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.util.DNS;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.junit.ClassRule;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.junit.Test;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.junit.experimental.categories.Category;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span><a name="line.33"></a> |
| <span class="sourceLineNo">034</span>@Category({MiscTests.class, SmallTests.class})<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>public class TestHDFSBlocksDistribution {<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> @ClassRule<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> HBaseClassTestRule.forClass(TestHDFSBlocksDistribution.class);<a name="line.39"></a> |
| <span class="sourceLineNo">040</span><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> @Test<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> public void testAddHostsAndBlockWeight() throws Exception {<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> HDFSBlocksDistribution distribution = new HDFSBlocksDistribution();<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> distribution.addHostsAndBlockWeight(null, 100);<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> assertEquals("Expecting no hosts weights", 0, distribution.getHostAndWeights().size());<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> distribution.addHostsAndBlockWeight(new String[0], 100);<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> assertEquals("Expecting no hosts weights", 0, distribution.getHostAndWeights().size());<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> distribution.addHostsAndBlockWeight(new String[] {"test"}, 101);<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> assertEquals("Should be one host", 1, distribution.getHostAndWeights().size());<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> distribution.addHostsAndBlockWeight(new String[] {"test"}, 202);<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> assertEquals("Should be one host", 1, distribution.getHostAndWeights().size());<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> assertEquals("test host should have weight 303", 303,<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> distribution.getHostAndWeights().get("test").getWeight());<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> distribution.addHostsAndBlockWeight(new String[] {"testTwo"}, 222);<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> assertEquals("Should be two hosts", 2, distribution.getHostAndWeights().size());<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> assertEquals("Total weight should be 525", 525, distribution.getUniqueBlocksTotalWeight());<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> distribution.addHostsAndBlockWeight(new String[] {"test"}, 100<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> , new StorageType[] { StorageType.SSD});<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> assertEquals("test host should have weight 403", 403<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> , distribution.getHostAndWeights().get("test").getWeight());<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> assertEquals("test host should have weight for ssd 100", 100<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> , distribution.getHostAndWeights().get("test").getWeightForSsd());<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> }<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> private static final class MockHDFSBlocksDistribution extends HDFSBlocksDistribution {<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> @Override<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> public Map<String, HostAndWeight> getHostAndWeights() {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> HashMap<String, HostAndWeight> map = new HashMap<>();<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> map.put("test", new HostAndWeight(null, 100, 0));<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> return map;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> }<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> }<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> @Test<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> public void testAdd() throws Exception {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> HDFSBlocksDistribution distribution = new HDFSBlocksDistribution();<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> distribution.add(new MockHDFSBlocksDistribution());<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> assertEquals("Expecting no hosts weights", 0, distribution.getHostAndWeights().size());<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> distribution.addHostsAndBlockWeight(new String[]{"test"}, 10);<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> assertEquals("Should be one host", 1, distribution.getHostAndWeights().size());<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> distribution.add(new MockHDFSBlocksDistribution());<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> assertEquals("Should be one host", 1, distribution.getHostAndWeights().size());<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> assertEquals("Total weight should be 10", 10, distribution.getUniqueBlocksTotalWeight());<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> }<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> @Test<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> public void testLocalHostCompatibility() throws Exception {<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> String currentHost = DNS.getDefaultHost("default", "default");<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> HDFSBlocksDistribution distribution = new HDFSBlocksDistribution();<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> assertEquals("Locality should be 0.0", 0.0,<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> distribution.getBlockLocalityIndex(currentHost), 0.01);<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> distribution.addHostsAndBlockWeight(new String[] { "localhost" }, 10);<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> assertEquals("Should be one host", 1, distribution.getHostAndWeights().size());<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> assertEquals("Locality should be 0.0", 0.0,<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> distribution.getBlockLocalityIndex("test"), 0.01);<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> assertNotEquals("Locality should be 0.0", 0.0,<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> distribution.getBlockLocalityIndex(currentHost), 0.01);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span>}<a name="line.101"></a> |
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| </pre> |
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