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<div class="subTitle">org.apache.mahout.classifier.df.mapreduce</div>
<h2 title="Class Builder" class="title">Class Builder</h2>
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<li><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<li>org.apache.mahout.classifier.df.mapreduce.Builder</li>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/inmem/InMemBuilder.html" title="class in org.apache.mahout.classifier.df.mapreduce.inmem">InMemBuilder</a>, <a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/partial/PartialBuilder.html" title="class in org.apache.mahout.classifier.df.mapreduce.partial">PartialBuilder</a></dd>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span></div>
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<pre><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public abstract class <span class="typeNameLabel">Builder</span>
extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">Base class for Mapred DecisionForest builders. Takes care of storing the parameters common to the mapred
implementations.<br>
The child classes must implement at least :
<ul>
<li>void configureJob(Job) : to further configure the job before its launch; and</li>
<li>DecisionForest parseOutput(Job, PredictionCallback) : in order to convert the job outputs into a
DecisionForest and its corresponding oob predictions</li>
</ul></div>
</li>
</ul>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier</th>
<th class="colLast" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#Builder-org.apache.mahout.classifier.df.builder.TreeBuilder-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-java.lang.Long-org.apache.hadoop.conf.Configuration-">Builder</a></span>(<a href="../../../../../../org/apache/mahout/classifier/df/builder/TreeBuilder.html" title="interface in org.apache.mahout.classifier.df.builder">TreeBuilder</a>&nbsp;treeBuilder,
org.apache.hadoop.fs.Path&nbsp;dataPath,
org.apache.hadoop.fs.Path&nbsp;datasetPath,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>&nbsp;seed,
org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/mahout/classifier/df/DecisionForest.html" title="class in org.apache.mahout.classifier.df">DecisionForest</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#build-int-">build</a></span>(int&nbsp;nbTrees)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#configureJob-org.apache.hadoop.mapreduce.Job-">configureJob</a></span>(org.apache.hadoop.mapreduce.Job&nbsp;job)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Used by the inheriting classes to configure the job</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>protected org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#getDataPath--">getDataPath</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#getDistributedCacheFile-org.apache.hadoop.conf.Configuration-int-">getDistributedCacheFile</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf,
int&nbsp;index)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Helper method.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#getNbTrees-org.apache.hadoop.conf.Configuration-">getNbTrees</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Get the number of trees for the map-reduce job.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#getNumMaps-org.apache.hadoop.conf.Configuration-">getNumMaps</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Return the value of "mapred.map.tasks".</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>protected org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#getOutputPath-org.apache.hadoop.conf.Configuration-">getOutputPath</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Output Directory name</div>
</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>static <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#getRandomSeed-org.apache.hadoop.conf.Configuration-">getRandomSeed</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Returns the random seed</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static <a href="../../../../../../org/apache/mahout/classifier/df/builder/TreeBuilder.html" title="interface in org.apache.mahout.classifier.df.builder">TreeBuilder</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#getTreeBuilder-org.apache.hadoop.conf.Configuration-">getTreeBuilder</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>protected static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#isOutput-org.apache.hadoop.conf.Configuration-">isOutput</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Used only for DEBUG purposes.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static <a href="../../../../../../org/apache/mahout/classifier/df/data/Dataset.html" title="class in org.apache.mahout.classifier.df.data">Dataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#loadDataset-org.apache.hadoop.conf.Configuration-">loadDataset</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Helper method.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>protected abstract <a href="../../../../../../org/apache/mahout/classifier/df/DecisionForest.html" title="class in org.apache.mahout.classifier.df">DecisionForest</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#parseOutput-org.apache.hadoop.mapreduce.Job-">parseOutput</a></span>(org.apache.hadoop.mapreduce.Job&nbsp;job)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Parse the output files to extract the trees and pass the predictions to the callback</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#runJob-org.apache.hadoop.mapreduce.Job-">runJob</a></span>(org.apache.hadoop.mapreduce.Job&nbsp;job)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Sequential implementation should override this method to simulate the job execution</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#setNbTrees-org.apache.hadoop.conf.Configuration-int-">setNbTrees</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf,
int&nbsp;nbTrees)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Set the number of trees to grow for the map-reduce job</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#setOutputDirName-java.lang.String-">setOutputDirName</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Sets the Output directory name, will be creating in the working directory</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/classifier/df/mapreduce/Builder.html#sortSplits-org.apache.hadoop.mapreduce.InputSplit:A-">sortSplits</a></span>(org.apache.hadoop.mapreduce.InputSplit[]&nbsp;splits)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">sort the splits into order based on size, so that the biggest go first.<br>
This is the same code used by Hadoop's JobClient.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Constructor Detail</h3>
<a name="Builder-org.apache.mahout.classifier.df.builder.TreeBuilder-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-java.lang.Long-org.apache.hadoop.conf.Configuration-">
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<h4>Builder</h4>
<pre>protected&nbsp;Builder(<a href="../../../../../../org/apache/mahout/classifier/df/builder/TreeBuilder.html" title="interface in org.apache.mahout.classifier.df.builder">TreeBuilder</a>&nbsp;treeBuilder,
org.apache.hadoop.fs.Path&nbsp;dataPath,
org.apache.hadoop.fs.Path&nbsp;datasetPath,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>&nbsp;seed,
org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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<h4>getDataPath</h4>
<pre>protected&nbsp;org.apache.hadoop.fs.Path&nbsp;getDataPath()</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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<a name="getNumMaps-org.apache.hadoop.conf.Configuration-">
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<h4>getNumMaps</h4>
<pre>public static&nbsp;int&nbsp;getNumMaps(org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Return the value of "mapred.map.tasks".</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - configuration</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of map tasks</dd>
</dl>
</li>
</ul>
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<h4>isOutput</h4>
<pre>protected static&nbsp;boolean&nbsp;isOutput(org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Used only for DEBUG purposes. if false, the mappers doesn't output anything, so the builder has nothing
to process</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - configuration</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the builder has to return output. false otherwise</dd>
</dl>
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<a name="getRandomSeed-org.apache.hadoop.conf.Configuration-">
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<h4>getRandomSeed</h4>
<pre>public static&nbsp;<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>&nbsp;getRandomSeed(org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Returns the random seed</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - configuration</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>null if no seed is available</dd>
</dl>
</li>
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<a name="getTreeBuilder-org.apache.hadoop.conf.Configuration-">
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<h4>getTreeBuilder</h4>
<pre>public static&nbsp;<a href="../../../../../../org/apache/mahout/classifier/df/builder/TreeBuilder.html" title="interface in org.apache.mahout.classifier.df.builder">TreeBuilder</a>&nbsp;getTreeBuilder(org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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<h4>getNbTrees</h4>
<pre>public static&nbsp;int&nbsp;getNbTrees(org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Get the number of trees for the map-reduce job.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - configuration</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of trees to build</dd>
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<h4>setNbTrees</h4>
<pre>public static&nbsp;void&nbsp;setNbTrees(org.apache.hadoop.conf.Configuration&nbsp;conf,
int&nbsp;nbTrees)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Set the number of trees to grow for the map-reduce job</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - configuration</dd>
<dd><code>nbTrees</code> - number of trees to build</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if (nbTrees <= 0)</dd>
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<h4>setOutputDirName</h4>
<pre>public&nbsp;void&nbsp;setOutputDirName(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Sets the Output directory name, will be creating in the working directory</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - output dir. name</dd>
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<h4>getOutputPath</h4>
<pre>protected&nbsp;org.apache.hadoop.fs.Path&nbsp;getOutputPath(org.apache.hadoop.conf.Configuration&nbsp;conf)
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Output Directory name</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - configuration</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>output dir. path (%WORKING_DIRECTORY%/OUTPUT_DIR_NAME%)</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if we cannot get the default FileSystem</dd>
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<h4>getDistributedCacheFile</h4>
<pre>public static&nbsp;org.apache.hadoop.fs.Path&nbsp;getDistributedCacheFile(org.apache.hadoop.conf.Configuration&nbsp;conf,
int&nbsp;index)
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Helper method. Get a path from the DistributedCache</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - configuration</dd>
<dd><code>index</code> - index of the path in the DistributedCache files</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>path from the DistributedCache</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if no path is found</dd>
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<h4>loadDataset</h4>
<pre>public static&nbsp;<a href="../../../../../../org/apache/mahout/classifier/df/data/Dataset.html" title="class in org.apache.mahout.classifier.df.data">Dataset</a>&nbsp;loadDataset(org.apache.hadoop.conf.Configuration&nbsp;conf)
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Helper method. Load a Dataset stored in the DistributedCache</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - configuration</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>loaded Dataset</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if we cannot retrieve the Dataset path from the DistributedCache, or the Dataset could not be
loaded</dd>
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<h4>configureJob</h4>
<pre>protected abstract&nbsp;void&nbsp;configureJob(org.apache.hadoop.mapreduce.Job&nbsp;job)
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Used by the inheriting classes to configure the job</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>job</code> - Hadoop's Job</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if anything goes wrong while configuring the job</dd>
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<h4>runJob</h4>
<pre>protected&nbsp;boolean&nbsp;runJob(org.apache.hadoop.mapreduce.Job&nbsp;job)
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a>,
<a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Sequential implementation should override this method to simulate the job execution</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>job</code> - Hadoop's job</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true is the job succeeded</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a></code></dd>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd>
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<h4>parseOutput</h4>
<pre>protected abstract&nbsp;<a href="../../../../../../org/apache/mahout/classifier/df/DecisionForest.html" title="class in org.apache.mahout.classifier.df">DecisionForest</a>&nbsp;parseOutput(org.apache.hadoop.mapreduce.Job&nbsp;job)
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">Parse the output files to extract the trees and pass the predictions to the callback</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>job</code> - Hadoop's job</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Built DecisionForest</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if anything goes wrong while parsing the output</dd>
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<h4>build</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/mahout/classifier/df/DecisionForest.html" title="class in org.apache.mahout.classifier.df">DecisionForest</a>&nbsp;build(int&nbsp;nbTrees)
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a>,
<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a></code></dd>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd>
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<h4>sortSplits</h4>
<pre>public static&nbsp;void&nbsp;sortSplits(org.apache.hadoop.mapreduce.InputSplit[]&nbsp;splits)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
<div class="block">sort the splits into order based on size, so that the biggest go first.<br>
This is the same code used by Hadoop's JobClient.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>splits</code> - input splits</dd>
</dl>
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