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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.snapshot;<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><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.ArrayList;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.testclassification.RegionServerTests;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.junit.ClassRule;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.junit.Test;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.junit.experimental.categories.Category;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span><a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotFileInfo;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span><a name="line.33"></a> |
| <span class="sourceLineNo">034</span>/**<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * Test Export Snapshot Tool helpers<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> */<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>@Category({ RegionServerTests.class, SmallTests.class })<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>public class TestExportSnapshotHelpers {<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> @ClassRule<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> HBaseClassTestRule.forClass(TestExportSnapshotHelpers.class);<a name="line.42"></a> |
| <span class="sourceLineNo">043</span><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> /**<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * Verfy the result of getBalanceSplits() method. The result are groups of files, used as input<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * list for the "export" mappers. All the groups should have similar amount of data. The input<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * list is a pair of file path and length. The getBalanceSplits() function sort it by length, and<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * assign to each group a file, going back and forth through the groups.<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> */<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> @Test<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> public void testBalanceSplit() throws Exception {<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> // Create a list of files<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> List<Pair<SnapshotFileInfo, Long>> files = new ArrayList<>(21);<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> for (long i = 0; i <= 20; i++) {<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> SnapshotFileInfo fileInfo = SnapshotFileInfo.newBuilder().setType(SnapshotFileInfo.Type.HFILE)<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> .setHfile("file-" + i).build();<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> files.add(new Pair<>(fileInfo, i));<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> }<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> // Create 5 groups (total size 210)<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> // group 0: 20, 11, 10, 1 (total size: 42)<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> // group 1: 19, 12, 9, 2 (total size: 42)<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> // group 2: 18, 13, 8, 3 (total size: 42)<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> // group 3: 17, 12, 7, 4 (total size: 42)<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> // group 4: 16, 11, 6, 5 (total size: 42)<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> List<List<Pair<SnapshotFileInfo, Long>>> splits = ExportSnapshot.getBalancedSplits(files, 5);<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> assertEquals(5, splits.size());<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> String[] split0 = new String[] { "file-20", "file-11", "file-10", "file-1", "file-0" };<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> verifyBalanceSplit(splits.get(0), split0, 42);<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> String[] split1 = new String[] { "file-19", "file-12", "file-9", "file-2" };<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> verifyBalanceSplit(splits.get(1), split1, 42);<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> String[] split2 = new String[] { "file-18", "file-13", "file-8", "file-3" };<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> verifyBalanceSplit(splits.get(2), split2, 42);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> String[] split3 = new String[] { "file-17", "file-14", "file-7", "file-4" };<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> verifyBalanceSplit(splits.get(3), split3, 42);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> String[] split4 = new String[] { "file-16", "file-15", "file-6", "file-5" };<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> verifyBalanceSplit(splits.get(4), split4, 42);<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> }<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> private void verifyBalanceSplit(final List<Pair<SnapshotFileInfo, Long>> split,<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> final String[] expected, final long expectedSize) {<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> assertEquals(expected.length, split.size());<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> long totalSize = 0;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> for (int i = 0; i < expected.length; ++i) {<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> Pair<SnapshotFileInfo, Long> fileInfo = split.get(i);<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> assertEquals(expected[i], fileInfo.getFirst().getHfile());<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> totalSize += fileInfo.getSecond();<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> }<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> assertEquals(expectedSize, totalSize);<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> }<a name="line.91"></a> |
| <span class="sourceLineNo">092</span>}<a name="line.92"></a> |
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