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Posted to commits@spark.apache.org by sr...@apache.org on 2018/02/28 18:49:28 UTC
[22/51] [partial] spark-website git commit: Apache Spark 2.3.0
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http://git-wip-us.apache.org/repos/asf/spark-website/blob/26c57a24/site/docs/2.3.0/api/java/org/apache/spark/NarrowDependency.html
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+<!-- ======== START OF CLASS DATA ======== -->
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+<div class="subTitle">org.apache.spark</div>
+<h2 title="Class NarrowDependency" class="title">Class NarrowDependency<T></h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>Object</li>
+<li>
+<ul class="inheritance">
+<li><a href="../../../org/apache/spark/Dependency.html" title="class in org.apache.spark">org.apache.spark.Dependency</a><T></li>
+<li>
+<ul class="inheritance">
+<li>org.apache.spark.NarrowDependency<T></li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+<div class="description">
+<ul class="blockList">
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+<dl>
+<dt>All Implemented Interfaces:</dt>
+<dd>java.io.Serializable</dd>
+</dl>
+<dl>
+<dt>Direct Known Subclasses:</dt>
+<dd><a href="../../../org/apache/spark/OneToOneDependency.html" title="class in org.apache.spark">OneToOneDependency</a>, <a href="../../../org/apache/spark/RangeDependency.html" title="class in org.apache.spark">RangeDependency</a></dd>
+</dl>
+<hr>
+<br>
+<pre>public abstract class <span class="typeNameLabel">NarrowDependency<T></span>
+extends <a href="../../../org/apache/spark/Dependency.html" title="class in org.apache.spark">Dependency</a><T></pre>
+<div class="block">:: DeveloperApi ::
+ Base class for dependencies where each partition of the child RDD depends on a small number
+ of partitions of the parent RDD. Narrow dependencies allow for pipelined execution.</div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../serialized-form.html#org.apache.spark.NarrowDependency">Serialized Form</a></dd>
+</dl>
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+<caption><span>Constructors</span><span class="tabEnd"> </span></caption>
+<tr>
+<th class="colOne" scope="col">Constructor and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/apache/spark/NarrowDependency.html#NarrowDependency-org.apache.spark.rdd.RDD-">NarrowDependency</a></span>(<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../org/apache/spark/NarrowDependency.html" title="type parameter in NarrowDependency">T</a>> _rdd)</code> </td>
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+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </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>abstract scala.collection.Seq<Object></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/NarrowDependency.html#getParents-int-">getParents</a></span>(int partitionId)</code>
+<div class="block">Get the parent partitions for a child partition.</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code><a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../org/apache/spark/NarrowDependency.html" title="type parameter in NarrowDependency">T</a>></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/NarrowDependency.html#rdd--">rdd</a></span>()</code> </td>
+</tr>
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+</a>
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+</li>
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+<!-- ========= CONSTRUCTOR DETAIL ======== -->
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+<!-- -->
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+<a name="NarrowDependency-org.apache.spark.rdd.RDD-">
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+<ul class="blockListLast">
+<li class="blockList">
+<h4>NarrowDependency</h4>
+<pre>public NarrowDependency(<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../org/apache/spark/NarrowDependency.html" title="type parameter in NarrowDependency">T</a>> _rdd)</pre>
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+<h4>getParents</h4>
+<pre>public abstract scala.collection.Seq<Object> getParents(int partitionId)</pre>
+<div class="block">Get the parent partitions for a child partition.</div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>partitionId</code> - a partition of the child RDD</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>the partitions of the parent RDD that the child partition depends upon</dd>
+</dl>
+</li>
+</ul>
+<a name="rdd--">
+<!-- -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>rdd</h4>
+<pre>public <a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../org/apache/spark/NarrowDependency.html" title="type parameter in NarrowDependency">T</a>> rdd()</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../org/apache/spark/Dependency.html#rdd--">rdd</a></code> in class <code><a href="../../../org/apache/spark/Dependency.html" title="class in org.apache.spark">Dependency</a><<a href="../../../org/apache/spark/NarrowDependency.html" title="type parameter in NarrowDependency">T</a>></code></dd>
+</dl>
+</li>
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http://git-wip-us.apache.org/repos/asf/spark-website/blob/26c57a24/site/docs/2.3.0/api/java/org/apache/spark/OneToOneDependency.html
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+<li><a href="#constructor.summary">Constr</a> | </li>
+<li><a href="#method.summary">Method</a></li>
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+<li>Detail: </li>
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+<!-- ========= END OF TOP NAVBAR ========= -->
+<!-- ======== START OF CLASS DATA ======== -->
+<div class="header">
+<div class="subTitle">org.apache.spark</div>
+<h2 title="Class OneToOneDependency" class="title">Class OneToOneDependency<T></h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>Object</li>
+<li>
+<ul class="inheritance">
+<li><a href="../../../org/apache/spark/Dependency.html" title="class in org.apache.spark">org.apache.spark.Dependency</a><T></li>
+<li>
+<ul class="inheritance">
+<li><a href="../../../org/apache/spark/NarrowDependency.html" title="class in org.apache.spark">org.apache.spark.NarrowDependency</a><T></li>
+<li>
+<ul class="inheritance">
+<li>org.apache.spark.OneToOneDependency<T></li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl>
+<dt>All Implemented Interfaces:</dt>
+<dd>java.io.Serializable</dd>
+</dl>
+<hr>
+<br>
+<pre>public class <span class="typeNameLabel">OneToOneDependency<T></span>
+extends <a href="../../../org/apache/spark/NarrowDependency.html" title="class in org.apache.spark">NarrowDependency</a><T></pre>
+<div class="block">:: DeveloperApi ::
+ Represents a one-to-one dependency between partitions of the parent and child RDDs.</div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../serialized-form.html#org.apache.spark.OneToOneDependency">Serialized Form</a></dd>
+</dl>
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+<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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+<caption><span>Constructors</span><span class="tabEnd"> </span></caption>
+<tr>
+<th class="colOne" scope="col">Constructor and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/apache/spark/OneToOneDependency.html#OneToOneDependency-org.apache.spark.rdd.RDD-">OneToOneDependency</a></span>(<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../org/apache/spark/OneToOneDependency.html" title="type parameter in OneToOneDependency">T</a>> rdd)</code> </td>
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+</ul>
+<!-- ========== METHOD SUMMARY =========== -->
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+<h3>Method Summary</h3>
+<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </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>scala.collection.immutable.List<Object></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/OneToOneDependency.html#getParents-int-">getParents</a></span>(int partitionId)</code>
+<div class="block">Get the parent partitions for a child partition.</div>
+</td>
+</tr>
+</table>
+<ul class="blockList">
+<li class="blockList"><a name="methods.inherited.from.class.org.apache.spark.NarrowDependency">
+<!-- -->
+</a>
+<h3>Methods inherited from class org.apache.spark.<a href="../../../org/apache/spark/NarrowDependency.html" title="class in org.apache.spark">NarrowDependency</a></h3>
+<code><a href="../../../org/apache/spark/NarrowDependency.html#rdd--">rdd</a></code></li>
+</ul>
+<ul class="blockList">
+<li class="blockList"><a name="methods.inherited.from.class.Object">
+<!-- -->
+</a>
+<h3>Methods inherited from class Object</h3>
+<code>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
+</ul>
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+</li>
+</ul>
+</div>
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+<li class="blockList">
+<!-- ========= CONSTRUCTOR DETAIL ======== -->
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+<li class="blockList"><a name="constructor.detail">
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+<h4>OneToOneDependency</h4>
+<pre>public OneToOneDependency(<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../org/apache/spark/OneToOneDependency.html" title="type parameter in OneToOneDependency">T</a>> rdd)</pre>
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+<pre>public scala.collection.immutable.List<Object> getParents(int partitionId)</pre>
+<div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../org/apache/spark/NarrowDependency.html#getParents-int-">NarrowDependency</a></code></span></div>
+<div class="block">Get the parent partitions for a child partition.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../org/apache/spark/NarrowDependency.html#getParents-int-">getParents</a></code> in class <code><a href="../../../org/apache/spark/NarrowDependency.html" title="class in org.apache.spark">NarrowDependency</a><<a href="../../../org/apache/spark/OneToOneDependency.html" title="type parameter in OneToOneDependency">T</a>></code></dd>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>partitionId</code> - a partition of the child RDD</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>the partitions of the parent RDD that the child partition depends upon</dd>
+</dl>
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+<h2 title="Interface Partition" class="title">Interface Partition</h2>
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+<pre>public interface <span class="typeNameLabel">Partition</span>
+extends scala.Serializable</pre>
+<div class="block">An identifier for a partition in an RDD.</div>
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+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr id="i0" class="altColor">
+<td class="colFirst"><code>boolean</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Partition.html#equals-java.lang.Object-">equals</a></span>(Object other)</code> </td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>int</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Partition.html#hashCode--">hashCode</a></span>()</code> </td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code>int</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Partition.html#index--">index</a></span>()</code>
+<div class="block">Get the partition's index within its parent RDD</div>
+</td>
+</tr>
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+<pre>int index()</pre>
+<div class="block">Get the partition's index within its parent RDD</div>
+<dl>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>(undocumented)</dd>
+</dl>
+</li>
+</ul>
+<a name="hashCode--">
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+<pre>int hashCode()</pre>
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+<dd><code>hashCode</code> in class <code>Object</code></dd>
+</dl>
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+<dd><code>equals</code> in class <code>Object</code></dd>
+</dl>
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+<h2 title="Class Partitioner" class="title">Class Partitioner</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>Object</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.spark.Partitioner</li>
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+<dd>java.io.Serializable</dd>
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+<dd><a href="../../../org/apache/spark/HashPartitioner.html" title="class in org.apache.spark">HashPartitioner</a>, <a href="../../../org/apache/spark/RangePartitioner.html" title="class in org.apache.spark">RangePartitioner</a></dd>
+</dl>
+<hr>
+<br>
+<pre>public abstract class <span class="typeNameLabel">Partitioner</span>
+extends Object
+implements scala.Serializable</pre>
+<div class="block">An object that defines how the elements in a key-value pair RDD are partitioned by key.
+ Maps each key to a partition ID, from 0 to <code>numPartitions - 1</code>.</div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../serialized-form.html#org.apache.spark.Partitioner">Serialized Form</a></dd>
+</dl>
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+<th class="colOne" scope="col">Constructor and Description</th>
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+<tr class="altColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Partitioner.html#Partitioner--">Partitioner</a></span>()</code> </td>
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+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
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+<tr id="i0" class="altColor">
+<td class="colFirst"><code>static <a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark">Partitioner</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Partitioner.html#defaultPartitioner-org.apache.spark.rdd.RDD-scala.collection.Seq-">defaultPartitioner</a></span>(<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><?> rdd,
+ scala.collection.Seq<<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><?>> others)</code>
+<div class="block">Choose a partitioner to use for a cogroup-like operation between a number of RDDs.</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>abstract int</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Partitioner.html#getPartition-java.lang.Object-">getPartition</a></span>(Object key)</code> </td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code>abstract int</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Partitioner.html#numPartitions--">numPartitions</a></span>()</code> </td>
+</tr>
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+<pre>public Partitioner()</pre>
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+<h4>defaultPartitioner</h4>
+<pre>public static <a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark">Partitioner</a> defaultPartitioner(<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><?> rdd,
+ scala.collection.Seq<<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><?>> others)</pre>
+<div class="block">Choose a partitioner to use for a cogroup-like operation between a number of RDDs.
+ <p>
+ If spark.default.parallelism is set, we'll use the value of SparkContext defaultParallelism
+ as the default partitions number, otherwise we'll use the max number of upstream partitions.
+ <p>
+ When available, we choose the partitioner from rdds with maximum number of partitions. If this
+ partitioner is eligible (number of partitions within an order of maximum number of partitions
+ in rdds), or has partition number higher than default partitions number - we use this
+ partitioner.
+ <p>
+ Otherwise, we'll use a new HashPartitioner with the default partitions number.
+ <p>
+ Unless spark.default.parallelism is set, the number of partitions will be the same as the
+ number of partitions in the largest upstream RDD, as this should be least likely to cause
+ out-of-memory errors.
+ <p>
+ We use two method parameters (rdd, others) to enforce callers passing at least 1 RDD.</div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>rdd</code> - (undocumented)</dd>
+<dd><code>others</code> - (undocumented)</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>(undocumented)</dd>
+</dl>
+</li>
+</ul>
+<a name="numPartitions--">
+<!-- -->
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+<h4>numPartitions</h4>
+<pre>public abstract int numPartitions()</pre>
+</li>
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+<div class="subTitle">org.apache.spark</div>
+<h2 title="Class RangeDependency" class="title">Class RangeDependency<T></h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>Object</li>
+<li>
+<ul class="inheritance">
+<li><a href="../../../org/apache/spark/Dependency.html" title="class in org.apache.spark">org.apache.spark.Dependency</a><T></li>
+<li>
+<ul class="inheritance">
+<li><a href="../../../org/apache/spark/NarrowDependency.html" title="class in org.apache.spark">org.apache.spark.NarrowDependency</a><T></li>
+<li>
+<ul class="inheritance">
+<li>org.apache.spark.RangeDependency<T></li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl>
+<dt>All Implemented Interfaces:</dt>
+<dd>java.io.Serializable</dd>
+</dl>
+<hr>
+<br>
+<pre>public class <span class="typeNameLabel">RangeDependency<T></span>
+extends <a href="../../../org/apache/spark/NarrowDependency.html" title="class in org.apache.spark">NarrowDependency</a><T></pre>
+<div class="block">:: DeveloperApi ::
+ Represents a one-to-one dependency between ranges of partitions in the parent and child RDDs.
+ param: rdd the parent RDD
+ param: inStart the start of the range in the parent RDD
+ param: outStart the start of the range in the child RDD
+ param: length the length of the range</div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../serialized-form.html#org.apache.spark.RangeDependency">Serialized Form</a></dd>
+</dl>
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+<tr>
+<th class="colOne" scope="col">Constructor and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangeDependency.html#RangeDependency-org.apache.spark.rdd.RDD-int-int-int-">RangeDependency</a></span>(<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../org/apache/spark/RangeDependency.html" title="type parameter in RangeDependency">T</a>> rdd,
+ int inStart,
+ int outStart,
+ int length)</code> </td>
+</tr>
+</table>
+</li>
+</ul>
+<!-- ========== METHOD SUMMARY =========== -->
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+<h3>Method Summary</h3>
+<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </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>scala.collection.immutable.List<Object></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangeDependency.html#getParents-int-">getParents</a></span>(int partitionId)</code>
+<div class="block">Get the parent partitions for a child partition.</div>
+</td>
+</tr>
+</table>
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+<li class="blockList"><a name="methods.inherited.from.class.org.apache.spark.NarrowDependency">
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+<h3>Methods inherited from class org.apache.spark.<a href="../../../org/apache/spark/NarrowDependency.html" title="class in org.apache.spark">NarrowDependency</a></h3>
+<code><a href="../../../org/apache/spark/NarrowDependency.html#rdd--">rdd</a></code></li>
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+<h4>RangeDependency</h4>
+<pre>public RangeDependency(<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><<a href="../../../org/apache/spark/RangeDependency.html" title="type parameter in RangeDependency">T</a>> rdd,
+ int inStart,
+ int outStart,
+ int length)</pre>
+</li>
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+<h4>getParents</h4>
+<pre>public scala.collection.immutable.List<Object> getParents(int partitionId)</pre>
+<div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../org/apache/spark/NarrowDependency.html#getParents-int-">NarrowDependency</a></code></span></div>
+<div class="block">Get the parent partitions for a child partition.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../org/apache/spark/NarrowDependency.html#getParents-int-">getParents</a></code> in class <code><a href="../../../org/apache/spark/NarrowDependency.html" title="class in org.apache.spark">NarrowDependency</a><<a href="../../../org/apache/spark/RangeDependency.html" title="type parameter in RangeDependency">T</a>></code></dd>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>partitionId</code> - a partition of the child RDD</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>the partitions of the parent RDD that the child partition depends upon</dd>
+</dl>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</div>
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+<div class="header">
+<div class="subTitle">org.apache.spark</div>
+<h2 title="Class RangePartitioner" class="title">Class RangePartitioner<K,V></h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>Object</li>
+<li>
+<ul class="inheritance">
+<li><a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark">org.apache.spark.Partitioner</a></li>
+<li>
+<ul class="inheritance">
+<li>org.apache.spark.RangePartitioner<K,V></li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl>
+<dt>All Implemented Interfaces:</dt>
+<dd>java.io.Serializable</dd>
+</dl>
+<hr>
+<br>
+<pre>public class <span class="typeNameLabel">RangePartitioner<K,V></span>
+extends <a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark">Partitioner</a></pre>
+<div class="block">A <a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark"><code>Partitioner</code></a> that partitions sortable records by range into roughly
+ equal ranges. The ranges are determined by sampling the content of the RDD passed in.
+ <p></div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../serialized-form.html#org.apache.spark.RangePartitioner">Serialized Form</a></dd>
+<dt><span class="simpleTagLabel">Note:</span></dt>
+<dd>The actual number of partitions created by the RangePartitioner might not be the same
+ as the <code>partitions</code> parameter, in the case where the number of sampled records is less than
+ the value of <code>partitions</code>.</dd>
+</dl>
+</li>
+</ul>
+</div>
+<div class="summary">
+<ul class="blockList">
+<li class="blockList">
+<!-- ======== CONSTRUCTOR SUMMARY ======== -->
+<ul class="blockList">
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+<!-- -->
+</a>
+<h3>Constructor Summary</h3>
+<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation">
+<caption><span>Constructors</span><span class="tabEnd"> </span></caption>
+<tr>
+<th class="colOne" scope="col">Constructor and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangePartitioner.html#RangePartitioner-int-org.apache.spark.rdd.RDD-boolean-int-scala.math.Ordering-scala.reflect.ClassTag-">RangePartitioner</a></span>(int partitions,
+ <a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><? extends scala.Product2<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>,<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">V</a>>> rdd,
+ boolean ascending,
+ int samplePointsPerPartitionHint,
+ scala.math.Ordering<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>> evidence$1,
+ scala.reflect.ClassTag<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>> evidence$2)</code> </td>
+</tr>
+<tr class="rowColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangePartitioner.html#RangePartitioner-int-org.apache.spark.rdd.RDD-boolean-scala.math.Ordering-scala.reflect.ClassTag-">RangePartitioner</a></span>(int partitions,
+ <a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><? extends scala.Product2<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>,<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">V</a>>> rdd,
+ boolean ascending,
+ scala.math.Ordering<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>> evidence$3,
+ scala.reflect.ClassTag<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>> evidence$4)</code> </td>
+</tr>
+</table>
+</li>
+</ul>
+<!-- ========== METHOD SUMMARY =========== -->
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+<li class="blockList"><a name="method.summary">
+<!-- -->
+</a>
+<h3>Method Summary</h3>
+<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </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>static <K> Object</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangePartitioner.html#determineBounds-scala.collection.mutable.ArrayBuffer-int-scala.math.Ordering-scala.reflect.ClassTag-">determineBounds</a></span>(scala.collection.mutable.ArrayBuffer<scala.Tuple2<K,Object>> candidates,
+ int partitions,
+ scala.math.Ordering<K> evidence$6,
+ scala.reflect.ClassTag<K> evidence$7)</code>
+<div class="block">Determines the bounds for range partitioning from candidates with weights indicating how many
+ items each represents.</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>boolean</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangePartitioner.html#equals-java.lang.Object-">equals</a></span>(Object other)</code> </td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code>int</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangePartitioner.html#getPartition-java.lang.Object-">getPartition</a></span>(Object key)</code> </td>
+</tr>
+<tr id="i3" class="rowColor">
+<td class="colFirst"><code>int</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangePartitioner.html#hashCode--">hashCode</a></span>()</code> </td>
+</tr>
+<tr id="i4" class="altColor">
+<td class="colFirst"><code>int</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangePartitioner.html#numPartitions--">numPartitions</a></span>()</code> </td>
+</tr>
+<tr id="i5" class="rowColor">
+<td class="colFirst"><code>int</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangePartitioner.html#samplePointsPerPartitionHint--">samplePointsPerPartitionHint</a></span>()</code> </td>
+</tr>
+<tr id="i6" class="altColor">
+<td class="colFirst"><code>static <K> scala.Tuple2<Object,scala.Tuple3<Object,Object,Object>[]></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/RangePartitioner.html#sketch-org.apache.spark.rdd.RDD-int-scala.reflect.ClassTag-">sketch</a></span>(<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><K> rdd,
+ int sampleSizePerPartition,
+ scala.reflect.ClassTag<K> evidence$5)</code>
+<div class="block">Sketches the input RDD via reservoir sampling on each partition.</div>
+</td>
+</tr>
+</table>
+<ul class="blockList">
+<li class="blockList"><a name="methods.inherited.from.class.org.apache.spark.Partitioner">
+<!-- -->
+</a>
+<h3>Methods inherited from class org.apache.spark.<a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark">Partitioner</a></h3>
+<code><a href="../../../org/apache/spark/Partitioner.html#defaultPartitioner-org.apache.spark.rdd.RDD-scala.collection.Seq-">defaultPartitioner</a></code></li>
+</ul>
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+<h3>Methods inherited from class Object</h3>
+<code>getClass, notify, notifyAll, toString, wait, wait, wait</code></li>
+</ul>
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+</li>
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+<div class="details">
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+<li class="blockList">
+<!-- ========= CONSTRUCTOR DETAIL ======== -->
+<ul class="blockList">
+<li class="blockList"><a name="constructor.detail">
+<!-- -->
+</a>
+<h3>Constructor Detail</h3>
+<a name="RangePartitioner-int-org.apache.spark.rdd.RDD-boolean-int-scala.math.Ordering-scala.reflect.ClassTag-">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>RangePartitioner</h4>
+<pre>public RangePartitioner(int partitions,
+ <a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><? extends scala.Product2<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>,<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">V</a>>> rdd,
+ boolean ascending,
+ int samplePointsPerPartitionHint,
+ scala.math.Ordering<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>> evidence$1,
+ scala.reflect.ClassTag<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>> evidence$2)</pre>
+</li>
+</ul>
+<a name="RangePartitioner-int-org.apache.spark.rdd.RDD-boolean-scala.math.Ordering-scala.reflect.ClassTag-">
+<!-- -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>RangePartitioner</h4>
+<pre>public RangePartitioner(int partitions,
+ <a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><? extends scala.Product2<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>,<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">V</a>>> rdd,
+ boolean ascending,
+ scala.math.Ordering<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>> evidence$3,
+ scala.reflect.ClassTag<<a href="../../../org/apache/spark/RangePartitioner.html" title="type parameter in RangePartitioner">K</a>> evidence$4)</pre>
+</li>
+</ul>
+</li>
+</ul>
+<!-- ============ METHOD DETAIL ========== -->
+<ul class="blockList">
+<li class="blockList"><a name="method.detail">
+<!-- -->
+</a>
+<h3>Method Detail</h3>
+<a name="sketch-org.apache.spark.rdd.RDD-int-scala.reflect.ClassTag-">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>sketch</h4>
+<pre>public static <K> scala.Tuple2<Object,scala.Tuple3<Object,Object,Object>[]> sketch(<a href="../../../org/apache/spark/rdd/RDD.html" title="class in org.apache.spark.rdd">RDD</a><K> rdd,
+ int sampleSizePerPartition,
+ scala.reflect.ClassTag<K> evidence$5)</pre>
+<div class="block">Sketches the input RDD via reservoir sampling on each partition.
+ <p></div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>rdd</code> - the input RDD to sketch</dd>
+<dd><code>sampleSizePerPartition</code> - max sample size per partition</dd>
+<dd><code>evidence$5</code> - (undocumented)</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>(total number of items, an array of (partitionId, number of items, sample))</dd>
+</dl>
+</li>
+</ul>
+<a name="determineBounds-scala.collection.mutable.ArrayBuffer-int-scala.math.Ordering-scala.reflect.ClassTag-">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>determineBounds</h4>
+<pre>public static <K> Object determineBounds(scala.collection.mutable.ArrayBuffer<scala.Tuple2<K,Object>> candidates,
+ int partitions,
+ scala.math.Ordering<K> evidence$6,
+ scala.reflect.ClassTag<K> evidence$7)</pre>
+<div class="block">Determines the bounds for range partitioning from candidates with weights indicating how many
+ items each represents. Usually this is 1 over the probability used to sample this candidate.
+ <p></div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>candidates</code> - unordered candidates with weights</dd>
+<dd><code>partitions</code> - number of partitions</dd>
+<dd><code>evidence$6</code> - (undocumented)</dd>
+<dd><code>evidence$7</code> - (undocumented)</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>selected bounds</dd>
+</dl>
+</li>
+</ul>
+<a name="samplePointsPerPartitionHint--">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>samplePointsPerPartitionHint</h4>
+<pre>public int samplePointsPerPartitionHint()</pre>
+</li>
+</ul>
+<a name="numPartitions--">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>numPartitions</h4>
+<pre>public int numPartitions()</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../org/apache/spark/Partitioner.html#numPartitions--">numPartitions</a></code> in class <code><a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark">Partitioner</a></code></dd>
+</dl>
+</li>
+</ul>
+<a name="getPartition-java.lang.Object-">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getPartition</h4>
+<pre>public int getPartition(Object key)</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../org/apache/spark/Partitioner.html#getPartition-java.lang.Object-">getPartition</a></code> in class <code><a href="../../../org/apache/spark/Partitioner.html" title="class in org.apache.spark">Partitioner</a></code></dd>
+</dl>
+</li>
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+<!-- -->
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+<h4>equals</h4>
+<pre>public boolean equals(Object other)</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
+<dd><code>equals</code> in class <code>Object</code></dd>
+</dl>
+</li>
+</ul>
+<a name="hashCode--">
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+<pre>public int hashCode()</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
+<dd><code>hashCode</code> in class <code>Object</code></dd>
+</dl>
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