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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.assertNotNull;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import static org.junit.Assert.assertSame;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span><a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.io.IOException;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.List;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.concurrent.ExecutionException;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.concurrent.ForkJoinPool;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.concurrent.Future;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.conf.Configuration;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.testclassification.RegionServerTests;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.junit.ClassRule;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.junit.Test;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.junit.experimental.categories.Category;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.mockito.Mockito;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span><a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hbase.thirdparty.com.google.common.collect.Iterables;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span><a name="line.40"></a> |
| <span class="sourceLineNo">041</span>/**<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * Testcase for HBASE-21503.<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> */<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>@Category({ RegionServerTests.class, SmallTests.class })<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>public class TestRaceBetweenGetWALAndGetWALs {<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> @ClassRule<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> HBaseClassTestRule.forClass(TestRaceBetweenGetWALAndGetWALs.class);<a name="line.49"></a> |
| <span class="sourceLineNo">050</span><a name="line.50"></a> |
| <span class="sourceLineNo">051</span> private static Future<List<WAL>> GET_WALS_FUTURE;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span><a name="line.52"></a> |
| <span class="sourceLineNo">053</span> private static final class FSWALProvider extends AbstractFSWALProvider<AbstractFSWAL<?>> {<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> @Override<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> protected AbstractFSWAL<?> createWAL() throws IOException {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> // just like what may do in the WALListeners, schedule an asynchronous task to call the<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> // getWALs method.<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> GET_WALS_FUTURE = ForkJoinPool.commonPool().submit(this::getWALs);<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> // sleep a while to make the getWALs arrive before we return<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> Threads.sleep(2000);<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> return Mockito.mock(AbstractFSWAL.class);<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> @Override<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> protected void doInit(Configuration conf) throws IOException {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> }<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> }<a name="line.68"></a> |
| <span class="sourceLineNo">069</span><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> @Test<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> public void testRace() throws IOException, InterruptedException, ExecutionException {<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> FSWALProvider p = new FSWALProvider();<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> WAL wal = p.getWAL(null);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> assertNotNull(GET_WALS_FUTURE);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> List<WAL> wals = GET_WALS_FUTURE.get();<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> assertSame(wal, Iterables.getOnlyElement(wals));<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> }<a name="line.77"></a> |
| <span class="sourceLineNo">078</span>}<a name="line.78"></a> |
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