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<div class="subTitle">org.apache.spark.rdd</div>
<h2 title="Class PartitionPruningRDD" class="title">Class PartitionPruningRDD<T></h2>
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<li>java.lang.Object</li>
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<li><a href="../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">org.apache.spark.rdd.RDD</a><T></li>
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<li>org.apache.spark.rdd.PartitionPruningRDD<T></li>
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<pre>public class <span class="strong">PartitionPruningRDD<T></span>
extends <a href="../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><T></pre>
<div class="block">:: DeveloperApi ::
A RDD used to prune RDD partitions/partitions so we can avoid launching tasks on
all partitions. An example use case: If we know the RDD is partitioned by range,
and the execution DAG has a filter on the key, we can avoid launching tasks
on partitions that don't have the range covering the key.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../serialized-form.html#org.apache.spark.rdd.PartitionPruningRDD">Serialized Form</a></dd></dl>
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<td class="colOne"><code><strong><a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html#PartitionPruningRDD(org.apache.spark.rdd.RDD, scala.Function1, scala.reflect.ClassTag)">PartitionPruningRDD</a></strong>(<a href="../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html" title="type parameter in PartitionPruningRDD">T</a>> prev,
scala.Function1<java.lang.Object,java.lang.Object> partitionFilterFunc,
scala.reflect.ClassTag<<a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html" title="type parameter in PartitionPruningRDD">T</a>> evidence$1)</code> </td>
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<td class="colFirst"><code>scala.collection.Iterator<<a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html" title="type parameter in PartitionPruningRDD">T</a>></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html#compute(org.apache.spark.Partition, org.apache.spark.TaskContext)">compute</a></strong>(<a href="../../../../org/apache/spark/Partition.html" title="interface in org.apache.spark">Partition</a> split,
<a href="../../../../org/apache/spark/TaskContext.html" title="class in org.apache.spark">TaskContext</a> context)</code>
<div class="block">:: DeveloperApi ::
Implemented by subclasses to compute a given partition.</div>
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<td class="colFirst"><code>static <T> <a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html" title="class in org.apache.spark.rdd">PartitionPruningRDD</a><T></code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html#create(org.apache.spark.rdd.RDD, scala.Function1)">create</a></strong>(<a href="../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><T> rdd,
scala.Function1<java.lang.Object,java.lang.Object> partitionFilterFunc)</code>
<div class="block">Create a PartitionPruningRDD.</div>
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<td class="colFirst"><code>protected <a href="../../../../org/apache/spark/Partition.html" title="interface in org.apache.spark">Partition</a>[]</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html#getPartitions()">getPartitions</a></strong>()</code>
<div class="block">Implemented by subclasses to return the set of partitions in this RDD.</div>
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<h4>PartitionPruningRDD</h4>
<pre>public PartitionPruningRDD(<a href="../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html" title="type parameter in PartitionPruningRDD">T</a>> prev,
scala.Function1<java.lang.Object,java.lang.Object> partitionFilterFunc,
scala.reflect.ClassTag<<a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html" title="type parameter in PartitionPruningRDD">T</a>> evidence$1)</pre>
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<h4>create</h4>
<pre>public static <T> <a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html" title="class in org.apache.spark.rdd">PartitionPruningRDD</a><T> create(<a href="../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><T> rdd,
scala.Function1<java.lang.Object,java.lang.Object> partitionFilterFunc)</pre>
<div class="block">Create a PartitionPruningRDD. This function can be used to create the PartitionPruningRDD
when its type T is not known at compile time.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>rdd</code> - (undocumented)</dd><dd><code>partitionFilterFunc</code> - (undocumented)</dd>
<dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<h4>compute</h4>
<pre>public scala.collection.Iterator<<a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html" title="type parameter in PartitionPruningRDD">T</a>> compute(<a href="../../../../org/apache/spark/Partition.html" title="interface in org.apache.spark">Partition</a> split,
<a href="../../../../org/apache/spark/TaskContext.html" title="class in org.apache.spark">TaskContext</a> context)</pre>
<div class="block"><strong>Description copied from class: <code><a href="../../../../org/apache/spark/rdd/RDD.html#compute(org.apache.spark.Partition, org.apache.spark.TaskContext)">RDD</a></code></strong></div>
<div class="block">:: DeveloperApi ::
Implemented by subclasses to compute a given partition.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../org/apache/spark/rdd/RDD.html#compute(org.apache.spark.Partition, org.apache.spark.TaskContext)">compute</a></code> in class <code><a href="../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html" title="type parameter in PartitionPruningRDD">T</a>></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>split</code> - (undocumented)</dd><dd><code>context</code> - (undocumented)</dd>
<dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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<h4>getPartitions</h4>
<pre>protected <a href="../../../../org/apache/spark/Partition.html" title="interface in org.apache.spark">Partition</a>[] getPartitions()</pre>
<div class="block"><strong>Description copied from class: <code><a href="../../../../org/apache/spark/rdd/RDD.html#getPartitions()">RDD</a></code></strong></div>
<div class="block">Implemented by subclasses to return the set of partitions in this RDD. This method will only
be called once, so it is safe to implement a time-consuming computation in it.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../org/apache/spark/rdd/RDD.html#getPartitions()">getPartitions</a></code> in class <code><a href="../../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../../org/apache/spark/rdd/PartitionPruningRDD.html" title="type parameter in PartitionPruningRDD">T</a>></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl>
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