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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.wal;<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.io.IOException;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.NavigableSet;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.apache.hadoop.fs.FileStatus;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.hadoop.fs.FileSystem;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.hadoop.fs.Path;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.hadoop.fs.PathFilter;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.HBaseCommonTestingUtility;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.testclassification.RegionServerTests;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.junit.AfterClass;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.junit.BeforeClass;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.junit.ClassRule;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.junit.Test;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.junit.experimental.categories.Category;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.slf4j.Logger;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.slf4j.LoggerFactory;<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span>@Category({ RegionServerTests.class, SmallTests.class })<a name="line.41"></a>
<span class="sourceLineNo">042</span>public class TestReadWriteSeqIdFiles {<a name="line.42"></a>
<span class="sourceLineNo">043</span><a name="line.43"></a>
<span class="sourceLineNo">044</span> @ClassRule<a name="line.44"></a>
<span class="sourceLineNo">045</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.45"></a>
<span class="sourceLineNo">046</span> HBaseClassTestRule.forClass(TestReadWriteSeqIdFiles.class);<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span> private static final Logger LOG = LoggerFactory.getLogger(TestReadWriteSeqIdFiles.class);<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span> private static final HBaseCommonTestingUtility UTIL = new HBaseCommonTestingUtility();<a name="line.50"></a>
<span class="sourceLineNo">051</span><a name="line.51"></a>
<span class="sourceLineNo">052</span> private static FileSystem walFS;<a name="line.52"></a>
<span class="sourceLineNo">053</span><a name="line.53"></a>
<span class="sourceLineNo">054</span> private static Path REGION_DIR;<a name="line.54"></a>
<span class="sourceLineNo">055</span><a name="line.55"></a>
<span class="sourceLineNo">056</span> @BeforeClass<a name="line.56"></a>
<span class="sourceLineNo">057</span> public static void setUp() throws IOException {<a name="line.57"></a>
<span class="sourceLineNo">058</span> walFS = FileSystem.getLocal(UTIL.getConfiguration());<a name="line.58"></a>
<span class="sourceLineNo">059</span> REGION_DIR = UTIL.getDataTestDir();<a name="line.59"></a>
<span class="sourceLineNo">060</span> }<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span> @AfterClass<a name="line.62"></a>
<span class="sourceLineNo">063</span> public static void tearDown() throws IOException {<a name="line.63"></a>
<span class="sourceLineNo">064</span> UTIL.cleanupTestDir();<a name="line.64"></a>
<span class="sourceLineNo">065</span> }<a name="line.65"></a>
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span> @Test<a name="line.67"></a>
<span class="sourceLineNo">068</span> public void test() throws IOException {<a name="line.68"></a>
<span class="sourceLineNo">069</span> WALSplitUtil.writeRegionSequenceIdFile(walFS, REGION_DIR, 1000L);<a name="line.69"></a>
<span class="sourceLineNo">070</span> assertEquals(1000L, WALSplitUtil.getMaxRegionSequenceId(walFS, REGION_DIR));<a name="line.70"></a>
<span class="sourceLineNo">071</span> WALSplitUtil.writeRegionSequenceIdFile(walFS, REGION_DIR, 2000L);<a name="line.71"></a>
<span class="sourceLineNo">072</span> assertEquals(2000L, WALSplitUtil.getMaxRegionSequenceId(walFS, REGION_DIR));<a name="line.72"></a>
<span class="sourceLineNo">073</span> // can not write a sequence id which is smaller<a name="line.73"></a>
<span class="sourceLineNo">074</span> try {<a name="line.74"></a>
<span class="sourceLineNo">075</span> WALSplitUtil.writeRegionSequenceIdFile(walFS, REGION_DIR, 1500L);<a name="line.75"></a>
<span class="sourceLineNo">076</span> } catch (IOException e) {<a name="line.76"></a>
<span class="sourceLineNo">077</span> // expected<a name="line.77"></a>
<span class="sourceLineNo">078</span> LOG.info("Expected error", e);<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> Path editsdir = WALSplitUtil.getRegionDirRecoveredEditsDir(REGION_DIR);<a name="line.81"></a>
<span class="sourceLineNo">082</span> FileStatus[] files = FSUtils.listStatus(walFS, editsdir, new PathFilter() {<a name="line.82"></a>
<span class="sourceLineNo">083</span> @Override<a name="line.83"></a>
<span class="sourceLineNo">084</span> public boolean accept(Path p) {<a name="line.84"></a>
<span class="sourceLineNo">085</span> return WALSplitUtil.isSequenceIdFile(p);<a name="line.85"></a>
<span class="sourceLineNo">086</span> }<a name="line.86"></a>
<span class="sourceLineNo">087</span> });<a name="line.87"></a>
<span class="sourceLineNo">088</span> // only one seqid file should exist<a name="line.88"></a>
<span class="sourceLineNo">089</span> assertEquals(1, files.length);<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>
<span class="sourceLineNo">091</span> // verify all seqId files aren't treated as recovered.edits files<a name="line.91"></a>
<span class="sourceLineNo">092</span> NavigableSet&lt;Path&gt; recoveredEdits = WALSplitUtil.getSplitEditFilesSorted(walFS, REGION_DIR);<a name="line.92"></a>
<span class="sourceLineNo">093</span> assertEquals(0, recoveredEdits.size());<a name="line.93"></a>
<span class="sourceLineNo">094</span> }<a name="line.94"></a>
<span class="sourceLineNo">095</span>}<a name="line.95"></a>
</pre>
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