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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/ObjectPool.html#objectFactory">objectFactory</a></span></code> </td> </tr> <tr class="rowColor"> +<td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/Lock.html?is-external=true"; title="class or interface in java.util.concurrent.locks">Lock</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/ObjectPool.html#purgeLock">purgeLock</a></span></code> +<div class="block">For preventing parallel purge</div> +</td> +</tr> +<tr class="altColor"> <td class="colFirst"><code>protected <a href="http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentMap.html?is-external=true"; title="class or interface in java.util.concurrent">ConcurrentMap</a><<a href="../../../../../org/apache/hadoop/hbase/util/ObjectPool.html" title="type parameter in ObjectPool">K</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ref/Reference.html?is-external=true"; title="class or interface in java.lang.ref">Reference</a><<a href="../../../../../org/apache/hadoop/hbase/util/ObjectPool.html" title="type parameter in ObjectPool">V</a>>></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/ObjectPool.html#referenceCache">referenceCache</a></span></code> <div class="block">Does not permit null keys.</div> </td> </tr> -<tr class="altColor"> +<tr class="rowColor"> <td class="colFirst"><code>protected <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ref/ReferenceQueue.html?is-external=true"; title="class or interface in java.lang.ref">ReferenceQueue</a><<a href="../../../../../org/apache/hadoop/hbase/util/ObjectPool.html" title="type parameter in ObjectPool">V</a>></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/ObjectPool.html#staleRefQueue">staleRefQueue</a></span></code> </td> </tr> @@ -251,12 +257,18 @@ extends <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html? 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b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileUtil.html index 4329724..f872117 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileUtil.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/HFileUtil.html @@ -28,27 +28,29 @@ <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> <span class="sourceLineNo">021</span><a name="line.21"></a> <span class="sourceLineNo">022</span>import org.apache.hadoop.fs.FSDataInputStream;<a name="line.22"></a> -<span class="sourceLineNo">023</span><a name="line.23"></a> -<span class="sourceLineNo">024</span>public class HFileUtil {<a name="line.24"></a> -<span class="sourceLineNo">025</span><a name="line.25"></a> -<span class="sourceLineNo">026</span> /** guards against NullPointer<a name="line.26"></a> -<span class="sourceLineNo">027</span> * utility which tries to seek on the DFSIS and will try an alternative source<a name="line.27"></a> -<span class="sourceLineNo">028</span> * 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name="line.38"></a> -<span class="sourceLineNo">039</span> // this can occur if the blockReader on the DFSInputStream is null<a name="line.39"></a> -<span class="sourceLineNo">040</span> istream.seekToNewSource(offset);<a name="line.40"></a> -<span class="sourceLineNo">041</span> }<a name="line.41"></a> -<span class="sourceLineNo">042</span> }<a name="line.42"></a> -<span class="sourceLineNo">043</span>}<a name="line.43"></a> +<span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.23"></a> +<span class="sourceLineNo">024</span><a name="line.24"></a> +<span class="sourceLineNo">025</span>@InterfaceAudience.Private<a name="line.25"></a> +<span class="sourceLineNo">026</span>class HFileUtil {<a name="line.26"></a> +<span class="sourceLineNo">027</span><a name="line.27"></a> +<span class="sourceLineNo">028</span> /** guards against NullPointer<a name="line.28"></a> +<span class="sourceLineNo">029</span> * utility which tries to seek on the DFSIS and will try an alternative source<a name="line.29"></a> +<span class="sourceLineNo">030</span> * if the FSDataInputStream throws an NPE HBASE-17501<a name="line.30"></a> +<span class="sourceLineNo">031</span> * @param istream<a name="line.31"></a> +<span class="sourceLineNo">032</span> * @param offset<a name="line.32"></a> +<span class="sourceLineNo">033</span> * @throws IOException<a name="line.33"></a> +<span class="sourceLineNo">034</span> */<a name="line.34"></a> +<span class="sourceLineNo">035</span> static public void seekOnMultipleSources(FSDataInputStream istream, long offset) throws IOException {<a name="line.35"></a> +<span class="sourceLineNo">036</span> try {<a name="line.36"></a> +<span class="sourceLineNo">037</span> // attempt to seek inside of current blockReader<a name="line.37"></a> +<span class="sourceLineNo">038</span> istream.seek(offset);<a name="line.38"></a> +<span class="sourceLineNo">039</span> } catch (NullPointerException e) {<a name="line.39"></a> +<span class="sourceLineNo">040</span> // retry the seek on an alternate copy of the data<a name="line.40"></a> +<span class="sourceLineNo">041</span> // this can occur if the blockReader on the DFSInputStream is null<a name="line.41"></a> +<span class="sourceLineNo">042</span> istream.seekToNewSource(offset);<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>}<a name="line.45"></a>
