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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.regionserver;<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.assertThrows;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import static org.junit.Assert.assertTrue;<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.ArrayList;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.Arrays;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.Cell;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.CellComparatorImpl;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.testclassification.RegionServerTests;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.util.CollectionBackedScanner;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.junit.ClassRule;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.junit.Test;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.junit.experimental.categories.Category;<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span>@Category({ RegionServerTests.class, SmallTests.class })<a name="line.40"></a>
<span class="sourceLineNo">041</span>public class TestKeyValueHeap {<a name="line.41"></a>
<span class="sourceLineNo">042</span><a name="line.42"></a>
<span class="sourceLineNo">043</span> @ClassRule<a name="line.43"></a>
<span class="sourceLineNo">044</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.44"></a>
<span class="sourceLineNo">045</span> HBaseClassTestRule.forClass(TestKeyValueHeap.class);<a name="line.45"></a>
<span class="sourceLineNo">046</span><a name="line.46"></a>
<span class="sourceLineNo">047</span> private byte[] row1 = Bytes.toBytes("row1");<a name="line.47"></a>
<span class="sourceLineNo">048</span> private byte[] fam1 = Bytes.toBytes("fam1");<a name="line.48"></a>
<span class="sourceLineNo">049</span> private byte[] col1 = Bytes.toBytes("col1");<a name="line.49"></a>
<span class="sourceLineNo">050</span> private byte[] data = Bytes.toBytes("data");<a name="line.50"></a>
<span class="sourceLineNo">051</span><a name="line.51"></a>
<span class="sourceLineNo">052</span> private byte[] row2 = Bytes.toBytes("row2");<a name="line.52"></a>
<span class="sourceLineNo">053</span> private byte[] fam2 = Bytes.toBytes("fam2");<a name="line.53"></a>
<span class="sourceLineNo">054</span> private byte[] col2 = Bytes.toBytes("col2");<a name="line.54"></a>
<span class="sourceLineNo">055</span><a name="line.55"></a>
<span class="sourceLineNo">056</span> private byte[] col3 = Bytes.toBytes("col3");<a name="line.56"></a>
<span class="sourceLineNo">057</span> private byte[] col4 = Bytes.toBytes("col4");<a name="line.57"></a>
<span class="sourceLineNo">058</span> private byte[] col5 = Bytes.toBytes("col5");<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span> // Variable name encoding. kv&lt;row#&gt;&lt;fam#&gt;&lt;col#&gt;<a name="line.60"></a>
<span class="sourceLineNo">061</span> Cell kv111 = new KeyValue(row1, fam1, col1, data);<a name="line.61"></a>
<span class="sourceLineNo">062</span> Cell kv112 = new KeyValue(row1, fam1, col2, data);<a name="line.62"></a>
<span class="sourceLineNo">063</span> Cell kv113 = new KeyValue(row1, fam1, col3, data);<a name="line.63"></a>
<span class="sourceLineNo">064</span> Cell kv114 = new KeyValue(row1, fam1, col4, data);<a name="line.64"></a>
<span class="sourceLineNo">065</span> Cell kv115 = new KeyValue(row1, fam1, col5, data);<a name="line.65"></a>
<span class="sourceLineNo">066</span> Cell kv121 = new KeyValue(row1, fam2, col1, data);<a name="line.66"></a>
<span class="sourceLineNo">067</span> Cell kv122 = new KeyValue(row1, fam2, col2, data);<a name="line.67"></a>
<span class="sourceLineNo">068</span> Cell kv211 = new KeyValue(row2, fam1, col1, data);<a name="line.68"></a>
<span class="sourceLineNo">069</span> Cell kv212 = new KeyValue(row2, fam1, col2, data);<a name="line.69"></a>
<span class="sourceLineNo">070</span> Cell kv213 = new KeyValue(row2, fam1, col3, data);<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span> TestScanner s1 = new TestScanner(Arrays.asList(kv115, kv211, kv212));<a name="line.72"></a>
<span class="sourceLineNo">073</span> TestScanner s2 = new TestScanner(Arrays.asList(kv111, kv112));<a name="line.73"></a>
<span class="sourceLineNo">074</span> TestScanner s3 = new TestScanner(Arrays.asList(kv113, kv114, kv121, kv122, kv213));<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span> List&lt;KeyValueScanner&gt; scanners = new ArrayList&lt;&gt;(Arrays.asList(s1, s2, s3));<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>
<span class="sourceLineNo">079</span> * Uses {@code scanners} to build a KeyValueHeap, iterates over it and asserts that returned Cells<a name="line.79"></a>
<span class="sourceLineNo">080</span> * are same as {@code expected}.<a name="line.80"></a>
<span class="sourceLineNo">081</span> * @return List of Cells returned from scanners.<a name="line.81"></a>
<span class="sourceLineNo">082</span> */<a name="line.82"></a>
<span class="sourceLineNo">083</span> public List&lt;Cell&gt; assertCells(List&lt;Cell&gt; expected, List&lt;KeyValueScanner&gt; scanners)<a name="line.83"></a>
<span class="sourceLineNo">084</span> throws IOException {<a name="line.84"></a>
<span class="sourceLineNo">085</span> // Creating KeyValueHeap<a name="line.85"></a>
<span class="sourceLineNo">086</span> try (KeyValueHeap kvh = new KeyValueHeap(scanners, CellComparatorImpl.COMPARATOR)) {<a name="line.86"></a>
<span class="sourceLineNo">087</span> List&lt;Cell&gt; actual = new ArrayList&lt;&gt;();<a name="line.87"></a>
<span class="sourceLineNo">088</span> while (kvh.peek() != null) {<a name="line.88"></a>
<span class="sourceLineNo">089</span> actual.add(kvh.next());<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> assertEquals(expected, actual);<a name="line.92"></a>
<span class="sourceLineNo">093</span> return actual;<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>
<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 testSorted() throws IOException {<a name="line.98"></a>
<span class="sourceLineNo">099</span> // Cases that need to be checked are:<a name="line.99"></a>
<span class="sourceLineNo">100</span> // 1. The "smallest" Cell is in the same scanners as current<a name="line.100"></a>
<span class="sourceLineNo">101</span> // 2. Current scanner gets empty<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span> List&lt;Cell&gt; expected =<a name="line.103"></a>
<span class="sourceLineNo">104</span> Arrays.asList(kv111, kv112, kv113, kv114, kv115, kv121, kv122, kv211, kv212, kv213);<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span> List&lt;Cell&gt; actual = assertCells(expected, scanners);<a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
<span class="sourceLineNo">108</span> // Check if result is sorted according to Comparator<a name="line.108"></a>
<span class="sourceLineNo">109</span> for (int i = 0; i &lt; actual.size() - 1; i++) {<a name="line.109"></a>
<span class="sourceLineNo">110</span> int ret = CellComparatorImpl.COMPARATOR.compare(actual.get(i), actual.get(i + 1));<a name="line.110"></a>
<span class="sourceLineNo">111</span> assertTrue(ret &lt; 0);<a name="line.111"></a>
<span class="sourceLineNo">112</span> }<a name="line.112"></a>
<span class="sourceLineNo">113</span> }<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span> @Test<a name="line.115"></a>
<span class="sourceLineNo">116</span> public void testSeek() throws IOException {<a name="line.116"></a>
<span class="sourceLineNo">117</span> // Cases:<a name="line.117"></a>
<span class="sourceLineNo">118</span> // 1. Seek Cell that is not in scanner<a name="line.118"></a>
<span class="sourceLineNo">119</span> // 2. Check that smallest that is returned from a seek is correct<a name="line.119"></a>
<span class="sourceLineNo">120</span> List&lt;Cell&gt; expected = Arrays.asList(kv211);<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span> // Creating KeyValueHeap<a name="line.122"></a>
<span class="sourceLineNo">123</span> try (KeyValueHeap kvh = new KeyValueHeap(scanners, CellComparatorImpl.COMPARATOR)) {<a name="line.123"></a>
<span class="sourceLineNo">124</span> Cell seekKv = new KeyValue(row2, fam1, null, null);<a name="line.124"></a>
<span class="sourceLineNo">125</span> kvh.seek(seekKv);<a name="line.125"></a>
<span class="sourceLineNo">126</span><a name="line.126"></a>
<span class="sourceLineNo">127</span> List&lt;Cell&gt; actual = Arrays.asList(kvh.peek());<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
<span class="sourceLineNo">129</span> assertEquals("Expected = " + Arrays.toString(expected.toArray()) + "\n Actual = "<a name="line.129"></a>
<span class="sourceLineNo">130</span> + Arrays.toString(actual.toArray()), expected, actual);<a name="line.130"></a>
<span class="sourceLineNo">131</span> }<a name="line.131"></a>
<span class="sourceLineNo">132</span> }<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
<span class="sourceLineNo">134</span> @Test<a name="line.134"></a>
<span class="sourceLineNo">135</span> public void testScannerLeak() throws IOException {<a name="line.135"></a>
<span class="sourceLineNo">136</span> // Test for unclosed scanners (HBASE-1927)<a name="line.136"></a>
<span class="sourceLineNo">137</span><a name="line.137"></a>
<span class="sourceLineNo">138</span> TestScanner s4 = new TestScanner(new ArrayList&lt;&gt;());<a name="line.138"></a>
<span class="sourceLineNo">139</span> scanners.add(s4);<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span> // Creating KeyValueHeap<a name="line.141"></a>
<span class="sourceLineNo">142</span> try (KeyValueHeap kvh = new KeyValueHeap(scanners, CellComparatorImpl.COMPARATOR)) {<a name="line.142"></a>
<span class="sourceLineNo">143</span> for (;;) {<a name="line.143"></a>
<span class="sourceLineNo">144</span> if (kvh.next() == null) {<a name="line.144"></a>
<span class="sourceLineNo">145</span> break;<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> // Once the internal scanners go out of Cells, those will be removed from KVHeap's priority<a name="line.148"></a>
<span class="sourceLineNo">149</span> // queue and added to a Set for lazy close. The actual close will happen only on<a name="line.149"></a>
<span class="sourceLineNo">150</span> // KVHeap#close()<a name="line.150"></a>
<span class="sourceLineNo">151</span> assertEquals(4, kvh.scannersForDelayedClose.size());<a name="line.151"></a>
<span class="sourceLineNo">152</span> assertTrue(kvh.scannersForDelayedClose.contains(s1));<a name="line.152"></a>
<span class="sourceLineNo">153</span> assertTrue(kvh.scannersForDelayedClose.contains(s2));<a name="line.153"></a>
<span class="sourceLineNo">154</span> assertTrue(kvh.scannersForDelayedClose.contains(s3));<a name="line.154"></a>
<span class="sourceLineNo">155</span> assertTrue(kvh.scannersForDelayedClose.contains(s4));<a name="line.155"></a>
<span class="sourceLineNo">156</span> }<a name="line.156"></a>
<span class="sourceLineNo">157</span><a name="line.157"></a>
<span class="sourceLineNo">158</span> for (KeyValueScanner scanner : scanners) {<a name="line.158"></a>
<span class="sourceLineNo">159</span> assertTrue(((TestScanner) scanner).isClosed());<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<a name="line.163"></a>
<span class="sourceLineNo">164</span> public void testScannerException() throws IOException {<a name="line.164"></a>
<span class="sourceLineNo">165</span> // Test for NPE issue when exception happens in scanners (HBASE-13835)<a name="line.165"></a>
<span class="sourceLineNo">166</span><a name="line.166"></a>
<span class="sourceLineNo">167</span> TestScanner s1 = new SeekTestScanner(Arrays.asList(kv115, kv211, kv212));<a name="line.167"></a>
<span class="sourceLineNo">168</span> TestScanner s2 = new SeekTestScanner(Arrays.asList(kv111, kv112));<a name="line.168"></a>
<span class="sourceLineNo">169</span> TestScanner s3 = new SeekTestScanner(Arrays.asList(kv113, kv114, kv121, kv122, kv213));<a name="line.169"></a>
<span class="sourceLineNo">170</span> TestScanner s4 = new SeekTestScanner(new ArrayList&lt;&gt;());<a name="line.170"></a>
<span class="sourceLineNo">171</span><a name="line.171"></a>
<span class="sourceLineNo">172</span> List&lt;KeyValueScanner&gt; scanners = new ArrayList&lt;&gt;(Arrays.asList(s1, s2, s3, s4));<a name="line.172"></a>
<span class="sourceLineNo">173</span><a name="line.173"></a>
<span class="sourceLineNo">174</span> // Creating KeyValueHeap<a name="line.174"></a>
<span class="sourceLineNo">175</span> try (KeyValueHeap kvh = new KeyValueHeap(scanners, CellComparatorImpl.COMPARATOR)) {<a name="line.175"></a>
<span class="sourceLineNo">176</span> for (KeyValueScanner scanner : scanners) {<a name="line.176"></a>
<span class="sourceLineNo">177</span> ((SeekTestScanner) scanner).setRealSeekDone(false);<a name="line.177"></a>
<span class="sourceLineNo">178</span> }<a name="line.178"></a>
<span class="sourceLineNo">179</span> // The pollRealKV should throw IOE.<a name="line.179"></a>
<span class="sourceLineNo">180</span> assertThrows(IOException.class, () -&gt; {<a name="line.180"></a>
<span class="sourceLineNo">181</span> for (;;) {<a name="line.181"></a>
<span class="sourceLineNo">182</span> if (kvh.next() == null) {<a name="line.182"></a>
<span class="sourceLineNo">183</span> break;<a name="line.183"></a>
<span class="sourceLineNo">184</span> }<a name="line.184"></a>
<span class="sourceLineNo">185</span> }<a name="line.185"></a>
<span class="sourceLineNo">186</span> });<a name="line.186"></a>
<span class="sourceLineNo">187</span> }<a name="line.187"></a>
<span class="sourceLineNo">188</span> // It implies there is no NPE thrown from kvh.close() if getting here<a name="line.188"></a>
<span class="sourceLineNo">189</span> for (KeyValueScanner scanner : scanners) {<a name="line.189"></a>
<span class="sourceLineNo">190</span> // Verify that close is called and only called once for each scanner<a name="line.190"></a>
<span class="sourceLineNo">191</span> assertTrue(((SeekTestScanner) scanner).isClosed());<a name="line.191"></a>
<span class="sourceLineNo">192</span> assertEquals(1, ((SeekTestScanner) scanner).getClosedNum());<a name="line.192"></a>
<span class="sourceLineNo">193</span> }<a name="line.193"></a>
<span class="sourceLineNo">194</span> }<a name="line.194"></a>
<span class="sourceLineNo">195</span><a name="line.195"></a>
<span class="sourceLineNo">196</span> @Test<a name="line.196"></a>
<span class="sourceLineNo">197</span> public void testPriorityId() throws IOException {<a name="line.197"></a>
<span class="sourceLineNo">198</span> Cell kv113A = new KeyValue(row1, fam1, col3, Bytes.toBytes("aaa"));<a name="line.198"></a>
<span class="sourceLineNo">199</span> Cell kv113B = new KeyValue(row1, fam1, col3, Bytes.toBytes("bbb"));<a name="line.199"></a>
<span class="sourceLineNo">200</span> TestScanner scan1 = new TestScanner(Arrays.asList(kv111, kv112, kv113A), 1);<a name="line.200"></a>
<span class="sourceLineNo">201</span> TestScanner scan2 = new TestScanner(Arrays.asList(kv113B), 2);<a name="line.201"></a>
<span class="sourceLineNo">202</span> List&lt;Cell&gt; expected = Arrays.asList(kv111, kv112, kv113B, kv113A);<a name="line.202"></a>
<span class="sourceLineNo">203</span> assertCells(expected, Arrays.asList(scan1, scan2));<a name="line.203"></a>
<span class="sourceLineNo">204</span><a name="line.204"></a>
<span class="sourceLineNo">205</span> scan1 = new TestScanner(Arrays.asList(kv111, kv112, kv113A), 2);<a name="line.205"></a>
<span class="sourceLineNo">206</span> scan2 = new TestScanner(Arrays.asList(kv113B), 1);<a name="line.206"></a>
<span class="sourceLineNo">207</span> expected = Arrays.asList(kv111, kv112, kv113A, kv113B);<a name="line.207"></a>
<span class="sourceLineNo">208</span> assertCells(expected, Arrays.asList(scan1, scan2));<a name="line.208"></a>
<span class="sourceLineNo">209</span> }<a name="line.209"></a>
<span class="sourceLineNo">210</span><a name="line.210"></a>
<span class="sourceLineNo">211</span> private static class TestScanner extends CollectionBackedScanner {<a name="line.211"></a>
<span class="sourceLineNo">212</span> private boolean closed = false;<a name="line.212"></a>
<span class="sourceLineNo">213</span> private long scannerOrder = 0;<a name="line.213"></a>
<span class="sourceLineNo">214</span><a name="line.214"></a>
<span class="sourceLineNo">215</span> public TestScanner(List&lt;Cell&gt; list) {<a name="line.215"></a>
<span class="sourceLineNo">216</span> super(list);<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> public TestScanner(List&lt;Cell&gt; list, long scannerOrder) {<a name="line.219"></a>
<span class="sourceLineNo">220</span> this(list);<a name="line.220"></a>
<span class="sourceLineNo">221</span> this.scannerOrder = scannerOrder;<a name="line.221"></a>
<span class="sourceLineNo">222</span> }<a name="line.222"></a>
<span class="sourceLineNo">223</span><a name="line.223"></a>
<span class="sourceLineNo">224</span> @Override<a name="line.224"></a>
<span class="sourceLineNo">225</span> public long getScannerOrder() {<a name="line.225"></a>
<span class="sourceLineNo">226</span> return scannerOrder;<a name="line.226"></a>
<span class="sourceLineNo">227</span> }<a name="line.227"></a>
<span class="sourceLineNo">228</span><a name="line.228"></a>
<span class="sourceLineNo">229</span> @Override<a name="line.229"></a>
<span class="sourceLineNo">230</span> public void close() {<a name="line.230"></a>
<span class="sourceLineNo">231</span> closed = true;<a name="line.231"></a>
<span class="sourceLineNo">232</span> }<a name="line.232"></a>
<span class="sourceLineNo">233</span><a name="line.233"></a>
<span class="sourceLineNo">234</span> public boolean isClosed() {<a name="line.234"></a>
<span class="sourceLineNo">235</span> return closed;<a name="line.235"></a>
<span class="sourceLineNo">236</span> }<a name="line.236"></a>
<span class="sourceLineNo">237</span> }<a name="line.237"></a>
<span class="sourceLineNo">238</span><a name="line.238"></a>
<span class="sourceLineNo">239</span> private static class SeekTestScanner extends TestScanner {<a name="line.239"></a>
<span class="sourceLineNo">240</span> private int closedNum = 0;<a name="line.240"></a>
<span class="sourceLineNo">241</span> private boolean realSeekDone = true;<a name="line.241"></a>
<span class="sourceLineNo">242</span><a name="line.242"></a>
<span class="sourceLineNo">243</span> public SeekTestScanner(List&lt;Cell&gt; list) {<a name="line.243"></a>
<span class="sourceLineNo">244</span> super(list);<a name="line.244"></a>
<span class="sourceLineNo">245</span> }<a name="line.245"></a>
<span class="sourceLineNo">246</span><a name="line.246"></a>
<span class="sourceLineNo">247</span> @Override<a name="line.247"></a>
<span class="sourceLineNo">248</span> public void close() {<a name="line.248"></a>
<span class="sourceLineNo">249</span> super.close();<a name="line.249"></a>
<span class="sourceLineNo">250</span> closedNum++;<a name="line.250"></a>
<span class="sourceLineNo">251</span> }<a name="line.251"></a>
<span class="sourceLineNo">252</span><a name="line.252"></a>
<span class="sourceLineNo">253</span> public int getClosedNum() {<a name="line.253"></a>
<span class="sourceLineNo">254</span> return closedNum;<a name="line.254"></a>
<span class="sourceLineNo">255</span> }<a name="line.255"></a>
<span class="sourceLineNo">256</span><a name="line.256"></a>
<span class="sourceLineNo">257</span> @Override<a name="line.257"></a>
<span class="sourceLineNo">258</span> public boolean realSeekDone() {<a name="line.258"></a>
<span class="sourceLineNo">259</span> return realSeekDone;<a name="line.259"></a>
<span class="sourceLineNo">260</span> }<a name="line.260"></a>
<span class="sourceLineNo">261</span><a name="line.261"></a>
<span class="sourceLineNo">262</span> public void setRealSeekDone(boolean done) {<a name="line.262"></a>
<span class="sourceLineNo">263</span> realSeekDone = done;<a name="line.263"></a>
<span class="sourceLineNo">264</span> }<a name="line.264"></a>
<span class="sourceLineNo">265</span><a name="line.265"></a>
<span class="sourceLineNo">266</span> @Override<a name="line.266"></a>
<span class="sourceLineNo">267</span> public void enforceSeek() throws IOException {<a name="line.267"></a>
<span class="sourceLineNo">268</span> throw new IOException("enforceSeek must not be called on a " + "non-lazy scanner");<a name="line.268"></a>
<span class="sourceLineNo">269</span> }<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>
</pre>
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