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+<div class="subTitle">org.apache.spark.api.java.function</div>
+<h2 title="Interface CoGroupFunction" class="title">Interface 
CoGroupFunction&lt;K,V1,V2,R&gt;</h2>
+</div>
+<div class="contentContainer">
+<div class="description">
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+<li class="blockList">
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+<br>
+<pre>public interface <span 
class="strong">CoGroupFunction&lt;K,V1,V2,R&gt;</span>
+extends java.io.Serializable</pre>
+<div class="block">A function that returns zero or more output records from 
each grouping key and its values from 2
+ Datasets.</div>
+</li>
+</ul>
+</div>
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+<!-- ========== METHOD SUMMARY =========== -->
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summary="Method Summary table, listing methods, and an explanation">
+<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/CoGroupFunction.html"
 title="type parameter in CoGroupFunction">R</a>&gt;</code></td>
+<td class="colLast"><code><strong><a 
href="../../../../../../org/apache/spark/api/java/function/CoGroupFunction.html#call(K,%20java.util.Iterator,%20java.util.Iterator)">call</a></strong>(<a
 
href="../../../../../../org/apache/spark/api/java/function/CoGroupFunction.html"
 title="type parameter in CoGroupFunction">K</a>&nbsp;key,
+    java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/CoGroupFunction.html"
 title="type parameter in CoGroupFunction">V1</a>&gt;&nbsp;left,
+    java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/CoGroupFunction.html"
 title="type parameter in 
CoGroupFunction">V2</a>&gt;&nbsp;right)</code>&nbsp;</td>
+</tr>
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+<h4>call</h4>
+<pre>java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/CoGroupFunction.html"
 title="type parameter in CoGroupFunction">R</a>&gt;&nbsp;call(<a 
href="../../../../../../org/apache/spark/api/java/function/CoGroupFunction.html"
 title="type parameter in CoGroupFunction">K</a>&nbsp;key,
+                         java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/CoGroupFunction.html"
 title="type parameter in CoGroupFunction">V1</a>&gt;&nbsp;left,
+                         java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/CoGroupFunction.html"
 title="type parameter in CoGroupFunction">V2</a>&gt;&nbsp;right)
+                           throws Exception</pre>
+<dl><dt><span class="strong">Throws:</span></dt>
+<dd><code>Exception</code></dd></dl>
+</li>
+</ul>
+</li>
+</ul>
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+<div class="subTitle">org.apache.spark.api.java.function</div>
+<h2 title="Interface DoubleFlatMapFunction" class="title">Interface 
DoubleFlatMapFunction&lt;T&gt;</h2>
+</div>
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+<br>
+<pre>public interface <span 
class="strong">DoubleFlatMapFunction&lt;T&gt;</span>
+extends java.io.Serializable</pre>
+<div class="block">A function that returns zero or more records of type Double 
from each input record.</div>
+</li>
+</ul>
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+<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" 
summary="Method Summary table, listing methods, and an explanation">
+<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>java.util.Iterator&lt;Double&gt;</code></td>
+<td class="colLast"><code><strong><a 
href="../../../../../../org/apache/spark/api/java/function/DoubleFlatMapFunction.html#call(T)">call</a></strong>(<a
 
href="../../../../../../org/apache/spark/api/java/function/DoubleFlatMapFunction.html"
 title="type parameter in DoubleFlatMapFunction">T</a>&nbsp;t)</code>&nbsp;</td>
+</tr>
+</table>
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+<h4>call</h4>
+<pre>java.util.Iterator&lt;Double&gt;&nbsp;call(<a 
href="../../../../../../org/apache/spark/api/java/function/DoubleFlatMapFunction.html"
 title="type parameter in DoubleFlatMapFunction">T</a>&nbsp;t)
+                                throws Exception</pre>
+<dl><dt><span class="strong">Throws:</span></dt>
+<dd><code>Exception</code></dd></dl>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
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http://git-wip-us.apache.org/repos/asf/spark-website/blob/3a634959/site/docs/2.1.3/api/java/org/apache/spark/api/java/function/DoubleFunction.html
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+<div class="subTitle">org.apache.spark.api.java.function</div>
+<h2 title="Interface DoubleFunction" class="title">Interface 
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+<div class="block">A function that returns Doubles, and can be used to 
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href="../../../../../../org/apache/spark/api/java/function/DoubleFunction.html#call(T)">call</a></strong>(<a
 
href="../../../../../../org/apache/spark/api/java/function/DoubleFunction.html" 
title="type parameter in DoubleFunction">T</a>&nbsp;t)</code>&nbsp;</td>
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title="type parameter in DoubleFunction">T</a>&nbsp;t)
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+extends java.io.Serializable</pre>
+<div class="block">Base interface for a function used in Dataset's filter 
function.
+
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summary="Method Summary table, listing methods, and an explanation">
+<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>boolean</code></td>
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href="../../../../../../org/apache/spark/api/java/function/FilterFunction.html" 
title="type parameter in FilterFunction">T</a>&nbsp;value)</code>&nbsp;</td>
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+<dl><dt><span class="strong">Throws:</span></dt>
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+</li>
+</ul>
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+<div class="subTitle">org.apache.spark.api.java.function</div>
+<h2 title="Interface FlatMapFunction" class="title">Interface 
FlatMapFunction&lt;T,R&gt;</h2>
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+<div class="contentContainer">
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+<ul class="blockList">
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+<dl>
+<dt>All Superinterfaces:</dt>
+<dd>java.io.Serializable</dd>
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+<br>
+<pre>public interface <span class="strong">FlatMapFunction&lt;T,R&gt;</span>
+extends java.io.Serializable</pre>
+<div class="block">A function that returns zero or more output records from 
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summary="Method Summary table, listing methods, and an explanation">
+<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction.html"
 title="type parameter in FlatMapFunction">R</a>&gt;</code></td>
+<td class="colLast"><code><strong><a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction.html#call(T)">call</a></strong>(<a
 
href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction.html"
 title="type parameter in FlatMapFunction">T</a>&nbsp;t)</code>&nbsp;</td>
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href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction.html"
 title="type parameter in FlatMapFunction">T</a>&nbsp;t)
+                           throws Exception</pre>
+<dl><dt><span class="strong">Throws:</span></dt>
+<dd><code>Exception</code></dd></dl>
+</li>
+</ul>
+</li>
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+<!-- ======== START OF CLASS DATA ======== -->
+<div class="header">
+<div class="subTitle">org.apache.spark.api.java.function</div>
+<h2 title="Interface FlatMapFunction2" class="title">Interface 
FlatMapFunction2&lt;T1,T2,R&gt;</h2>
+</div>
+<div class="contentContainer">
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl>
+<dt>All Superinterfaces:</dt>
+<dd>java.io.Serializable</dd>
+</dl>
+<hr>
+<br>
+<pre>public interface <span 
class="strong">FlatMapFunction2&lt;T1,T2,R&gt;</span>
+extends java.io.Serializable</pre>
+<div class="block">A function that takes two inputs and returns zero or more 
output records.</div>
+</li>
+</ul>
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summary="Method Summary table, listing methods, and an explanation">
+<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction2.html"
 title="type parameter in FlatMapFunction2">R</a>&gt;</code></td>
+<td class="colLast"><code><strong><a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction2.html#call(T1,%20T2)">call</a></strong>(<a
 
href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction2.html"
 title="type parameter in FlatMapFunction2">T1</a>&nbsp;t1,
+    <a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction2.html"
 title="type parameter in FlatMapFunction2">T2</a>&nbsp;t2)</code>&nbsp;</td>
+</tr>
+</table>
+</li>
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+<pre>java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction2.html"
 title="type parameter in FlatMapFunction2">R</a>&gt;&nbsp;call(<a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction2.html"
 title="type parameter in FlatMapFunction2">T1</a>&nbsp;t1,
+                         <a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapFunction2.html"
 title="type parameter in FlatMapFunction2">T2</a>&nbsp;t2)
+                           throws Exception</pre>
+<dl><dt><span class="strong">Throws:</span></dt>
+<dd><code>Exception</code></dd></dl>
+</li>
+</ul>
+</li>
+</ul>
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+<div class="header">
+<div class="subTitle">org.apache.spark.api.java.function</div>
+<h2 title="Interface FlatMapGroupsFunction" class="title">Interface 
FlatMapGroupsFunction&lt;K,V,R&gt;</h2>
+</div>
+<div class="contentContainer">
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
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+<dt>All Superinterfaces:</dt>
+<dd>java.io.Serializable</dd>
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+<br>
+<pre>public interface <span 
class="strong">FlatMapGroupsFunction&lt;K,V,R&gt;</span>
+extends java.io.Serializable</pre>
+<div class="block">A function that returns zero or more output records from 
each grouping key and its values.</div>
+</li>
+</ul>
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+<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" 
summary="Method Summary table, listing methods, and an explanation">
+<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapGroupsFunction.html"
 title="type parameter in FlatMapGroupsFunction">R</a>&gt;</code></td>
+<td class="colLast"><code><strong><a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapGroupsFunction.html#call(K,%20java.util.Iterator)">call</a></strong>(<a
 
href="../../../../../../org/apache/spark/api/java/function/FlatMapGroupsFunction.html"
 title="type parameter in FlatMapGroupsFunction">K</a>&nbsp;key,
+    java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapGroupsFunction.html"
 title="type parameter in 
FlatMapGroupsFunction">V</a>&gt;&nbsp;values)</code>&nbsp;</td>
+</tr>
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+</ul>
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+<!-- ============ METHOD DETAIL ========== -->
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+<!--   -->
+</a><a name="call(K, java.util.Iterator)">
+<!--   -->
+</a>
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+<h4>call</h4>
+<pre>java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapGroupsFunction.html"
 title="type parameter in FlatMapGroupsFunction">R</a>&gt;&nbsp;call(<a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapGroupsFunction.html"
 title="type parameter in FlatMapGroupsFunction">K</a>&nbsp;key,
+                         java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/FlatMapGroupsFunction.html"
 title="type parameter in FlatMapGroupsFunction">V</a>&gt;&nbsp;values)
+                           throws Exception</pre>
+<dl><dt><span class="strong">Throws:</span></dt>
+<dd><code>Exception</code></dd></dl>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</div>
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+<pre>public interface <span class="strong">ForeachFunction&lt;T&gt;</span>
+extends java.io.Serializable</pre>
+<div class="block">Base interface for a function used in Dataset's foreach 
function.
+
+ Spark will invoke the call function on each element in the input 
Dataset.</div>
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+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><strong><a 
href="../../../../../../org/apache/spark/api/java/function/ForeachFunction.html#call(T)">call</a></strong>(<a
 
href="../../../../../../org/apache/spark/api/java/function/ForeachFunction.html"
 title="type parameter in ForeachFunction">T</a>&nbsp;t)</code>&nbsp;</td>
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+<pre>void&nbsp;call(<a 
href="../../../../../../org/apache/spark/api/java/function/ForeachFunction.html"
 title="type parameter in ForeachFunction">T</a>&nbsp;t)
+          throws Exception</pre>
+<dl><dt><span class="strong">Throws:</span></dt>
+<dd><code>Exception</code></dd></dl>
+</li>
+</ul>
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+</div>
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+<pre>public interface <span 
class="strong">ForeachPartitionFunction&lt;T&gt;</span>
+extends java.io.Serializable</pre>
+<div class="block">Base interface for a function used in Dataset's 
foreachPartition function.</div>
+</li>
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+<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><strong><a 
href="../../../../../../org/apache/spark/api/java/function/ForeachPartitionFunction.html#call(java.util.Iterator)">call</a></strong>(java.util.Iterator&lt;<a
 
href="../../../../../../org/apache/spark/api/java/function/ForeachPartitionFunction.html"
 title="type parameter in 
ForeachPartitionFunction">T</a>&gt;&nbsp;t)</code>&nbsp;</td>
+</tr>
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+<pre>void&nbsp;call(java.util.Iterator&lt;<a 
href="../../../../../../org/apache/spark/api/java/function/ForeachPartitionFunction.html"
 title="type parameter in ForeachPartitionFunction">T</a>&gt;&nbsp;t)
+          throws Exception</pre>
+<dl><dt><span class="strong">Throws:</span></dt>
+<dd><code>Exception</code></dd></dl>
+</li>
+</ul>
+</li>
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+<div class="subTitle">org.apache.spark.api.java.function</div>
+<h2 title="Interface Function" class="title">Interface 
Function&lt;T1,R&gt;</h2>
+</div>
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+<pre>public interface <span class="strong">Function&lt;T1,R&gt;</span>
+extends java.io.Serializable</pre>
+<div class="block">Base interface for functions whose return types do not 
create special RDDs. PairFunction and
+ DoubleFunction are handled separately, to allow PairRDDs and DoubleRDDs to be 
constructed
+ when mapping RDDs of other types.</div>
+</li>
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+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
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+<td class="colFirst"><code><a 
href="../../../../../../org/apache/spark/api/java/function/Function.html" 
title="type parameter in Function">R</a></code></td>
+<td class="colLast"><code><strong><a 
href="../../../../../../org/apache/spark/api/java/function/Function.html#call(T1)">call</a></strong>(<a
 href="../../../../../../org/apache/spark/api/java/function/Function.html" 
title="type parameter in Function">T1</a>&nbsp;v1)</code>&nbsp;</td>
+</tr>
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