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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.io;<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.assertFalse;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static org.junit.Assert.assertNotEquals;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import static org.junit.Assert.assertTrue;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span><a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.io.FileNotFoundException;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.io.IOException;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.ArrayList;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.List;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.conf.Configuration;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.fs.FSDataInputStream;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.fs.FSDataOutputStream;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.fs.FileSystem;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.fs.Path;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HBaseTestingUtil;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.testclassification.IOTests;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hdfs.DistributedFileSystem;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hdfs.MiniDFSCluster;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hdfs.client.HdfsDataInputStream;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.junit.ClassRule;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.junit.Test;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.junit.experimental.categories.Category;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span>/**<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * Test that FileLink switches between alternate locations when the current location moves or gets<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * deleted.<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> */<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>@Category({ IOTests.class, MediumTests.class })<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>public class TestFileLink {<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> @ClassRule<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> HBaseClassTestRule.forClass(TestFileLink.class);<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> @Test<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> public void testEquals() {<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> Path p1 = new Path("/p1");<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> Path p2 = new Path("/p2");<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> Path p3 = new Path("/p3");<a name="line.62"></a> |
| <span class="sourceLineNo">063</span><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> assertEquals(new FileLink(), new FileLink());<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> assertEquals(new FileLink(p1), new FileLink(p1));<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> assertEquals(new FileLink(p1, p2), new FileLink(p1, p2));<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> assertEquals(new FileLink(p1, p2, p3), new FileLink(p1, p2, p3));<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> assertNotEquals(new FileLink(p1), new FileLink(p3));<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> assertNotEquals(new FileLink(p1, p2), new FileLink(p1));<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> assertNotEquals(new FileLink(p1, p2), new FileLink(p2));<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> assertNotEquals(new FileLink(p1, p2), new FileLink(p2, p1)); // ordering important!<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 testHashCode() {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> Path p1 = new Path("/p1");<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> Path p2 = new Path("/p2");<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> Path p3 = new Path("/p3");<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> assertEquals(new FileLink().hashCode(), new FileLink().hashCode());<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> assertEquals(new FileLink(p1).hashCode(), new FileLink(p1).hashCode());<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> assertEquals(new FileLink(p1, p2).hashCode(), new FileLink(p1, p2).hashCode());<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> assertEquals(new FileLink(p1, p2, p3).hashCode(), new FileLink(p1, p2, p3).hashCode());<a name="line.84"></a> |
| <span class="sourceLineNo">085</span><a name="line.85"></a> |
| <span class="sourceLineNo">086</span> assertNotEquals(new FileLink(p1).hashCode(), new FileLink(p3).hashCode());<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> assertNotEquals(new FileLink(p1, p2).hashCode(), new FileLink(p1).hashCode());<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> assertNotEquals(new FileLink(p1, p2).hashCode(), new FileLink(p2).hashCode());<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> assertNotEquals(new FileLink(p1, p2).hashCode(), new FileLink(p2, p1).hashCode()); // ordering<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> }<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> |
| <span class="sourceLineNo">093</span> * Test that the returned link from {@link FileLink#open(FileSystem)} can be unwrapped to a<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * {@link HdfsDataInputStream} by<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> * {@link FileLink#getUnderlyingFileLinkInputStream(FSDataInputStream)}<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> */<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> @Test<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> public void testGetUnderlyingFSDataInputStream() throws Exception {<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> HBaseTestingUtil testUtil = new HBaseTestingUtil();<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> Configuration conf = testUtil.getConfiguration();<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> conf.setInt("dfs.blocksize", 1024 * 1024);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> conf.setInt("dfs.client.read.prefetch.size", 2 * 1024 * 1024);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> testUtil.startMiniDFSCluster(1);<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> try {<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> MiniDFSCluster cluster = testUtil.getDFSCluster();<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> FileSystem fs = cluster.getFileSystem();<a name="line.107"></a> |
| <span class="sourceLineNo">108</span><a name="line.108"></a> |
| <span class="sourceLineNo">109</span> Path originalPath = new Path(testUtil.getDefaultRootDirPath(), "test.file");<a name="line.109"></a> |
| <span class="sourceLineNo">110</span><a name="line.110"></a> |
| <span class="sourceLineNo">111</span> writeSomeData(fs, originalPath, 256 << 20, (byte) 2);<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> List<Path> files = new ArrayList<Path>();<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> files.add(originalPath);<a name="line.114"></a> |
| <span class="sourceLineNo">115</span><a name="line.115"></a> |
| <span class="sourceLineNo">116</span> FileLink link = new FileLink(files);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> FSDataInputStream stream = link.open(fs);<a name="line.117"></a> |
| <span class="sourceLineNo">118</span><a name="line.118"></a> |
| <span class="sourceLineNo">119</span> FSDataInputStream underlying = FileLink.getUnderlyingFileLinkInputStream(stream);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> assertTrue(underlying instanceof HdfsDataInputStream);<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> } finally {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> testUtil.shutdownMiniCluster();<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> }<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> }<a name="line.124"></a> |
| <span class="sourceLineNo">125</span><a name="line.125"></a> |
| <span class="sourceLineNo">126</span> /**<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> * Test, on HDFS, that the FileLink is still readable even when the current file gets renamed.<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> */<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> @Test<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> public void testHDFSLinkReadDuringRename() throws Exception {<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> HBaseTestingUtil testUtil = new HBaseTestingUtil();<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> Configuration conf = testUtil.getConfiguration();<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> conf.setInt("dfs.blocksize", 1024 * 1024);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> conf.setInt("dfs.client.read.prefetch.size", 2 * 1024 * 1024);<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> testUtil.startMiniDFSCluster(1);<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> MiniDFSCluster cluster = testUtil.getDFSCluster();<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> FileSystem fs = cluster.getFileSystem();<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> assertEquals("hdfs", fs.getUri().getScheme());<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> try {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> testLinkReadDuringRename(fs, testUtil.getDefaultRootDirPath());<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> } finally {<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> testUtil.shutdownMiniCluster();<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> }<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> }<a name="line.146"></a> |
| <span class="sourceLineNo">147</span><a name="line.147"></a> |
| <span class="sourceLineNo">148</span> private static class MyDistributedFileSystem extends DistributedFileSystem {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> MyDistributedFileSystem() {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> }<a name="line.150"></a> |
| <span class="sourceLineNo">151</span><a name="line.151"></a> |
| <span class="sourceLineNo">152</span> @Override<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> public FSDataInputStream open(Path f, final int bufferSize) throws IOException {<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> throw new RemoteException(FileNotFoundException.class.getName(), "");<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> }<a name="line.155"></a> |
| <span class="sourceLineNo">156</span><a name="line.156"></a> |
| <span class="sourceLineNo">157</span> @Override<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> public Configuration getConf() {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> return new Configuration();<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> }<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> }<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> @Test(expected = FileNotFoundException.class)<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> public void testLinkReadWithMissingFile() throws Exception {<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> HBaseTestingUtil testUtil = new HBaseTestingUtil();<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> FileSystem fs = new MyDistributedFileSystem();<a name="line.166"></a> |
| <span class="sourceLineNo">167</span><a name="line.167"></a> |
| <span class="sourceLineNo">168</span> Path originalPath = new Path(testUtil.getDefaultRootDirPath(), "test.file");<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> Path archivedPath = new Path(testUtil.getDefaultRootDirPath(), "archived.file");<a name="line.169"></a> |
| <span class="sourceLineNo">170</span><a name="line.170"></a> |
| <span class="sourceLineNo">171</span> List<Path> files = new ArrayList<Path>();<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> files.add(originalPath);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> files.add(archivedPath);<a name="line.173"></a> |
| <span class="sourceLineNo">174</span><a name="line.174"></a> |
| <span class="sourceLineNo">175</span> FileLink link = new FileLink(files);<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> link.open(fs);<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> }<a name="line.177"></a> |
| <span class="sourceLineNo">178</span><a name="line.178"></a> |
| <span class="sourceLineNo">179</span> /**<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> * Test, on a local filesystem, that the FileLink is still readable even when the current file<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * gets renamed.<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> */<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> @Test<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> public void testLocalLinkReadDuringRename() throws IOException {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> HBaseTestingUtil testUtil = new HBaseTestingUtil();<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> FileSystem fs = testUtil.getTestFileSystem();<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> assertEquals("file", fs.getUri().getScheme());<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> testLinkReadDuringRename(fs, testUtil.getDataTestDir());<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> }<a name="line.189"></a> |
| <span class="sourceLineNo">190</span><a name="line.190"></a> |
| <span class="sourceLineNo">191</span> /**<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> * Test that link is still readable even when the current file gets renamed.<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> */<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> private void testLinkReadDuringRename(FileSystem fs, Path rootDir) throws IOException {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> Path originalPath = new Path(rootDir, "test.file");<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> Path archivedPath = new Path(rootDir, "archived.file");<a name="line.196"></a> |
| <span class="sourceLineNo">197</span><a name="line.197"></a> |
| <span class="sourceLineNo">198</span> writeSomeData(fs, originalPath, 256 << 20, (byte) 2);<a name="line.198"></a> |
| <span class="sourceLineNo">199</span><a name="line.199"></a> |
| <span class="sourceLineNo">200</span> List<Path> files = new ArrayList<>();<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> files.add(originalPath);<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> files.add(archivedPath);<a name="line.202"></a> |
| <span class="sourceLineNo">203</span><a name="line.203"></a> |
| <span class="sourceLineNo">204</span> FileLink link = new FileLink(files);<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> FSDataInputStream in = link.open(fs);<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> try {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> byte[] data = new byte[8192];<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> long size = 0;<a name="line.208"></a> |
| <span class="sourceLineNo">209</span><a name="line.209"></a> |
| <span class="sourceLineNo">210</span> // Read from origin<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> int n = in.read(data);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> dataVerify(data, n, (byte) 2);<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> size += n;<a name="line.213"></a> |
| <span class="sourceLineNo">214</span><a name="line.214"></a> |
| <span class="sourceLineNo">215</span> if (FSUtils.WINDOWS) {<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> in.close();<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> }<a name="line.217"></a> |
| <span class="sourceLineNo">218</span><a name="line.218"></a> |
| <span class="sourceLineNo">219</span> // Move origin to archive<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> assertFalse(fs.exists(archivedPath));<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> fs.rename(originalPath, archivedPath);<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> assertFalse(fs.exists(originalPath));<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> assertTrue(fs.exists(archivedPath));<a name="line.223"></a> |
| <span class="sourceLineNo">224</span><a name="line.224"></a> |
| <span class="sourceLineNo">225</span> if (FSUtils.WINDOWS) {<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> in = link.open(fs); // re-read from beginning<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> in.read(data);<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span><a name="line.229"></a> |
| <span class="sourceLineNo">230</span> // Try to read to the end<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> while ((n = in.read(data)) > 0) {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> dataVerify(data, n, (byte) 2);<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> size += n;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> }<a name="line.234"></a> |
| <span class="sourceLineNo">235</span><a name="line.235"></a> |
| <span class="sourceLineNo">236</span> assertEquals(256 << 20, size);<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> } finally {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> in.close();<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> if (fs.exists(originalPath)) fs.delete(originalPath, true);<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> if (fs.exists(archivedPath)) fs.delete(archivedPath, true);<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> }<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> }<a name="line.242"></a> |
| <span class="sourceLineNo">243</span><a name="line.243"></a> |
| <span class="sourceLineNo">244</span> /**<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> * Test that link is still readable even when the current file gets deleted. NOTE: This test is<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> * valid only on HDFS. When a file is deleted from a local file-system, it is simply 'unlinked'.<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> * The inode, which contains the file's data, is not deleted until all processes have finished<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> * with it. In HDFS when the request exceed the cached block locations, a query to the namenode is<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> * performed, using the filename, and the deleted file doesn't exists anymore<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> * (FileNotFoundException).<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> */<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> @Test<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> public void testHDFSLinkReadDuringDelete() throws Exception {<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> HBaseTestingUtil testUtil = new HBaseTestingUtil();<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> Configuration conf = testUtil.getConfiguration();<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> conf.setInt("dfs.blocksize", 1024 * 1024);<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> conf.setInt("dfs.client.read.prefetch.size", 2 * 1024 * 1024);<a name="line.257"></a> |
| <span class="sourceLineNo">258</span><a name="line.258"></a> |
| <span class="sourceLineNo">259</span> testUtil.startMiniDFSCluster(1);<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> MiniDFSCluster cluster = testUtil.getDFSCluster();<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> FileSystem fs = cluster.getFileSystem();<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> assertEquals("hdfs", fs.getUri().getScheme());<a name="line.262"></a> |
| <span class="sourceLineNo">263</span><a name="line.263"></a> |
| <span class="sourceLineNo">264</span> try {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> List<Path> files = new ArrayList<>();<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> for (int i = 0; i < 3; i++) {<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> Path path = new Path(String.format("test-data-%d", i));<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> writeSomeData(fs, path, 1 << 20, (byte) i);<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> files.add(path);<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> }<a name="line.270"></a> |
| <span class="sourceLineNo">271</span><a name="line.271"></a> |
| <span class="sourceLineNo">272</span> FileLink link = new FileLink(files);<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> FSDataInputStream in = link.open(fs);<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> try {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> byte[] data = new byte[8192];<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> int n;<a name="line.276"></a> |
| <span class="sourceLineNo">277</span><a name="line.277"></a> |
| <span class="sourceLineNo">278</span> // Switch to file 1<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> n = in.read(data);<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> dataVerify(data, n, (byte) 0);<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> fs.delete(files.get(0), true);<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> skipBuffer(in, (byte) 0);<a name="line.282"></a> |
| <span class="sourceLineNo">283</span><a name="line.283"></a> |
| <span class="sourceLineNo">284</span> // Switch to file 2<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> n = in.read(data);<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> dataVerify(data, n, (byte) 1);<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> fs.delete(files.get(1), true);<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> skipBuffer(in, (byte) 1);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span><a name="line.289"></a> |
| <span class="sourceLineNo">290</span> // Switch to file 3<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> n = in.read(data);<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> dataVerify(data, n, (byte) 2);<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> fs.delete(files.get(2), true);<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> skipBuffer(in, (byte) 2);<a name="line.294"></a> |
| <span class="sourceLineNo">295</span><a name="line.295"></a> |
| <span class="sourceLineNo">296</span> // No more files available<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> try {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> n = in.read(data);<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> assert (n <= 0);<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> } catch (FileNotFoundException e) {<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> assertTrue(true);<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> }<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> } finally {<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> in.close();<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> }<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> } finally {<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> testUtil.shutdownMiniCluster();<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> }<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> }<a name="line.309"></a> |
| <span class="sourceLineNo">310</span><a name="line.310"></a> |
| <span class="sourceLineNo">311</span> /**<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> * Write up to 'size' bytes with value 'v' into a new file called 'path'.<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> */<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> private void writeSomeData(FileSystem fs, Path path, long size, byte v) throws IOException {<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> byte[] data = new byte[4096];<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> for (int i = 0; i < data.length; i++) {<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> data[i] = v;<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> }<a name="line.318"></a> |
| <span class="sourceLineNo">319</span><a name="line.319"></a> |
| <span class="sourceLineNo">320</span> FSDataOutputStream stream = fs.create(path);<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> try {<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> long written = 0;<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> while (written < size) {<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> stream.write(data, 0, data.length);<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> written += data.length;<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> }<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> } finally {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> stream.close();<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> }<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> }<a name="line.330"></a> |
| <span class="sourceLineNo">331</span><a name="line.331"></a> |
| <span class="sourceLineNo">332</span> /**<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> * Verify that all bytes in 'data' have 'v' as value.<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> */<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> private static void dataVerify(byte[] data, int n, byte v) {<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> for (int i = 0; i < n; ++i) {<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> assertEquals(v, data[i]);<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> }<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> }<a name="line.339"></a> |
| <span class="sourceLineNo">340</span><a name="line.340"></a> |
| <span class="sourceLineNo">341</span> private static void skipBuffer(FSDataInputStream in, byte v) throws IOException {<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> byte[] data = new byte[8192];<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> try {<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> int n;<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> while ((n = in.read(data)) == data.length) {<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> for (int i = 0; i < data.length; ++i) {<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> if (data[i] != v) throw new Exception("File changed");<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> }<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> }<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> } catch (Exception e) {<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> }<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> }<a name="line.352"></a> |
| <span class="sourceLineNo">353</span>}<a name="line.353"></a> |
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| </div> |
| </body> |
| </html> |
