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apache / hadoop-site / 952d547359cafef280f0a0324055741b2ed55be1 / . / content / docs / r3.3.1 / hadoop-mapreduce-client / hadoop-mapreduce-client-nativetask / apidocs / org / apache / hadoop / mapred / nativetask / util / NativeTaskOutputFiles.html
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<div class="subTitle">org.apache.hadoop.mapred.nativetask.util</div>
<h2 title="Class NativeTaskOutputFiles" class="title">Class NativeTaskOutputFiles</h2>
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<li>org.apache.hadoop.mapred.nativetask.util.NativeTaskOutputFiles</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></dd>
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<pre>@InterfaceAudience.Private
public class <span class="typeNameLabel">NativeTaskOutputFiles</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></pre>
<div class="block">Manipulate the working area for the transient store for maps and reduces.
This class is used by map and reduce tasks to identify the directories that they need
to write to/read from for intermediate files. The callers of these methods are from
child space and see mapreduce.cluster.local.dir as
taskTracker/jobCache/jobId/attemptId.
This class should not be used from TaskTracker space.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#NativeTaskOutputFiles-org.apache.hadoop.conf.Configuration-java.lang.String-">NativeTaskOutputFiles</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id)</code>&nbsp;</td>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getInputFile-int-">getInputFile</a></span>(int&nbsp;mapId)</code>
<div class="block">Return a local reduce input file created earlier</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getInputFileForWrite-org.apache.hadoop.mapred.TaskID-long-org.apache.hadoop.conf.Configuration-">getInputFileForWrite</a></span>(org.apache.hadoop.mapred.TaskID&nbsp;mapId,
long&nbsp;size,
org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block">Create a local reduce input file name.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getOutputFile--">getOutputFile</a></span>()</code>
<div class="block">Return the path to local map output file created earlier</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getOutputFileForWrite-long-">getOutputFileForWrite</a></span>(long&nbsp;size)</code>
<div class="block">Create a local map output file name.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getOutputIndexFile--">getOutputIndexFile</a></span>()</code>
<div class="block">Return the path to a local map output index file created earlier</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getOutputIndexFileForWrite-long-">getOutputIndexFileForWrite</a></span>(long&nbsp;size)</code>
<div class="block">Create a local map output index file name.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getOutputName-int-">getOutputName</a></span>(int&nbsp;partition)</code>&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getSpillFile-int-">getSpillFile</a></span>(int&nbsp;spillNumber)</code>
<div class="block">Return a local map spill file created earlier.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getSpillFileForWrite-int-long-">getSpillFileForWrite</a></span>(int&nbsp;spillNumber,
long&nbsp;size)</code>
<div class="block">Create a local map spill file name.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getSpillIndexFile-int-">getSpillIndexFile</a></span>(int&nbsp;spillNumber)</code>
<div class="block">Return a local map spill index file created earlier</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#getSpillIndexFileForWrite-int-long-">getSpillIndexFileForWrite</a></span>(int&nbsp;spillNumber,
long&nbsp;size)</code>
<div class="block">Create a local map spill index file name.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutputFiles.html#removeAll--">removeAll</a></span>()</code>
<div class="block">Removes all of the files related to a task.</div>
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<h4>NativeTaskOutputFiles</h4>
<pre>public&nbsp;NativeTaskOutputFiles(org.apache.hadoop.conf.Configuration&nbsp;conf,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id)</pre>
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<h4>getOutputFile</h4>
<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getOutputFile()
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Return the path to local map output file created earlier</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getOutputFile--">getOutputFile</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
</dl>
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<h4>getOutputFileForWrite</h4>
<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getOutputFileForWrite(long&nbsp;size)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Create a local map output file name.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getOutputFileForWrite-long-">getOutputFileForWrite</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>size</code> - the size of the file</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>getOutputIndexFile</h4>
<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getOutputIndexFile()
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Return the path to a local map output index file created earlier</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getOutputIndexFile--">getOutputIndexFile</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>getOutputIndexFileForWrite</h4>
<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getOutputIndexFileForWrite(long&nbsp;size)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Create a local map output index file name.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getOutputIndexFileForWrite-long-">getOutputIndexFileForWrite</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>size</code> - the size of the file</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>getSpillFile</h4>
<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getSpillFile(int&nbsp;spillNumber)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Return a local map spill file created earlier.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getSpillFile-int-">getSpillFile</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>spillNumber</code> - the number</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getSpillFileForWrite(int&nbsp;spillNumber,
long&nbsp;size)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Create a local map spill file name.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getSpillFileForWrite-int-long-">getSpillFileForWrite</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>spillNumber</code> - the number</dd>
<dd><code>size</code> - the size of the file</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getSpillIndexFile(int&nbsp;spillNumber)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Return a local map spill index file created earlier</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getSpillIndexFile-int-">getSpillIndexFile</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>spillNumber</code> - the number</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>getSpillIndexFileForWrite</h4>
<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getSpillIndexFileForWrite(int&nbsp;spillNumber,
long&nbsp;size)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Create a local map spill index file name.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getSpillIndexFileForWrite-int-long-">getSpillIndexFileForWrite</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>spillNumber</code> - the number</dd>
<dd><code>size</code> - the size of the file</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getInputFile(int&nbsp;mapId)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Return a local reduce input file created earlier</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getInputFile-int-">getInputFile</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mapId</code> - a map task id</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getInputFileForWrite(org.apache.hadoop.mapred.TaskID&nbsp;mapId,
long&nbsp;size,
org.apache.hadoop.conf.Configuration&nbsp;conf)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Create a local reduce input file name.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getInputFileForWrite-org.apache.hadoop.mapred.TaskID-long-org.apache.hadoop.conf.Configuration-">getInputFileForWrite</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mapId</code> - a map task id</dd>
<dd><code>size</code> - the size of the file</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;void&nbsp;removeAll()
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<div class="block">Removes all of the files related to a task.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#removeAll--">removeAll</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>getOutputName</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getOutputName(int&nbsp;partition)</pre>
<dl>
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<dd><code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html#getOutputName-int-">getOutputName</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapred/nativetask/util/NativeTaskOutput.html" title="interface in org.apache.hadoop.mapred.nativetask.util">NativeTaskOutput</a></code></dd>
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