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From sro...@apache.org
Subject [29/51] [partial] spark-website git commit: Apache Spark 2.3.0 Release: Generated Docs
Date Wed, 28 Feb 2018 18:49:35 GMT
http://git-wip-us.apache.org/repos/asf/spark-website/blob/26c57a24/site/docs/2.3.0/api/java/org/apache/spark/Accumulable.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<!-- NewPage -->
+<html lang="en">
+<head>
+<!-- Generated by javadoc (1.8.0_144) on Wed Feb 28 00:07:24 PST 2018 -->
+<title>Accumulable (Spark 2.3.0 JavaDoc)</title>
+<meta name="date" content="2018-02-28">
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+<script type="text/javascript"><!--
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+            parent.document.title="Accumulable (Spark 2.3.0 JavaDoc)";
+        }
+    }
+    catch(err) {
+    }
+//-->
+var methods = {"i0":42,"i1":42,"i2":42,"i3":42,"i4":42,"i5":42,"i6":42,"i7":42,"i8":42};
+var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],8:["t4","Concrete Methods"],32:["t6","Deprecated Methods"]};
+var altColor = "altColor";
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+<div>JavaScript is disabled on your browser.</div>
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+<ul class="subNavList">
+<li>Summary:&nbsp;</li>
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+<!-- ======== START OF CLASS DATA ======== -->
+<div class="header">
+<div class="subTitle">org.apache.spark</div>
+<h2 title="Class Accumulable" class="title">Class Accumulable&lt;R,T&gt;</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>Object</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.spark.Accumulable&lt;R,T&gt;</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>
+<dl>
+<dt>Direct Known Subclasses:</dt>
+<dd><a href="../../../org/apache/spark/Accumulator.html" title="class in org.apache.spark">Accumulator</a></dd>
+</dl>
+<hr>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
+<div class="block"><span class="deprecationComment">use AccumulatorV2. Since 2.0.0.</span></div>
+</div>
+<br>
+<pre>public class <span class="typeNameLabel">Accumulable&lt;R,T&gt;</span>
+extends Object
+implements java.io.Serializable</pre>
+<div class="block">A data type that can be accumulated, i.e. has a commutative and associative "add" operation,
+ but where the result type, <code>R</code>, may be different from the element type being added, <code>T</code>.
+ <p>
+ You must define how to add data, and how to merge two of these together.  For some data types,
+ such as a counter, these might be the same operation. In that case, you can use the simpler
+ <a href="../../../org/apache/spark/Accumulator.html" title="class in org.apache.spark"><code>Accumulator</code></a>. They won't always be the same, though -- e.g., imagine you are
+ accumulating a set. You will add items to the set, and you will union two sets together.
+ <p>
+ Operations are not thread-safe.
+ <p>
+ param:  id ID of this accumulator; for internal use only.
+ param:  initialValue initial value of accumulator
+ param:  param helper object defining how to add elements of type <code>R</code> and <code>T</code>
+ param:  name human-readable name for use in Spark's web UI
+ param:  countFailedValues whether to accumulate values from failed tasks. This is set to true
+                          for system and time metrics like serialization time or bytes spilled,
+                          and false for things with absolute values like number of input rows.
+                          This should be used for internal metrics only.</div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../serialized-form.html#org.apache.spark.Accumulable">Serialized Form</a></dd>
+</dl>
+</li>
+</ul>
+</div>
+<div class="summary">
+<ul class="blockList">
+<li class="blockList">
+<!-- ======== CONSTRUCTOR SUMMARY ======== -->
+<ul class="blockList">
+<li class="blockList"><a name="constructor.summary">
+<!--   -->
+</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">&nbsp;</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/Accumulable.html#Accumulable-R-org.apache.spark.AccumulableParam-">Accumulable</a></span>(<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>&nbsp;initialValue,
+           <a href="../../../org/apache/spark/AccumulableParam.html" title="interface in org.apache.spark">AccumulableParam</a>&lt;<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>,<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">T</a>&gt;&nbsp;param)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+&nbsp;</td>
+</tr>
+</table>
+</li>
+</ul>
+<!-- ========== METHOD SUMMARY =========== -->
+<ul class="blockList">
+<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">&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="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>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulable.html#add-T-">add</a></span>(<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">T</a>&nbsp;term)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Add more data to this accumulator / accumulable</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>long</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulable.html#id--">id</a></span>()</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+&nbsp;</td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code><a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulable.html#localValue--">localValue</a></span>()</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Get the current value of this accumulator from within a task.</div>
+</td>
+</tr>
+<tr id="i3" class="rowColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulable.html#merge-R-">merge</a></span>(<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>&nbsp;term)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Merge two accumulable objects together</div>
+</td>
+</tr>
+<tr id="i4" class="altColor">
+<td class="colFirst"><code>scala.Option&lt;String&gt;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulable.html#name--">name</a></span>()</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+&nbsp;</td>
+</tr>
+<tr id="i5" class="rowColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulable.html#setValue-R-">setValue</a></span>(<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>&nbsp;newValue)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Set the accumulator's value.</div>
+</td>
+</tr>
+<tr id="i6" class="altColor">
+<td class="colFirst"><code>String</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulable.html#toString--">toString</a></span>()</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+&nbsp;</td>
+</tr>
+<tr id="i7" class="rowColor">
+<td class="colFirst"><code><a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulable.html#value--">value</a></span>()</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Access the accumulator's current value; only allowed on driver.</div>
+</td>
+</tr>
+<tr id="i8" class="altColor">
+<td class="colFirst"><code><a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulable.html#zero--">zero</a></span>()</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+&nbsp;</td>
+</tr>
+</table>
+<ul class="blockList">
+<li class="blockList"><a name="methods.inherited.from.class.Object">
+<!--   -->
+</a>
+<h3>Methods inherited from class&nbsp;Object</h3>
+<code>equals, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="details">
+<ul class="blockList">
+<li class="blockList">
+<!-- ========= CONSTRUCTOR DETAIL ======== -->
+<ul class="blockList">
+<li class="blockList"><a name="constructor.detail">
+<!--   -->
+</a>
+<h3>Constructor Detail</h3>
+<a name="Accumulable-java.lang.Object-org.apache.spark.AccumulableParam-">
+<!--   -->
+</a><a name="Accumulable-R-org.apache.spark.AccumulableParam-">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>Accumulable</h4>
+<pre>public&nbsp;Accumulable(<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>&nbsp;initialValue,
+                   <a href="../../../org/apache/spark/AccumulableParam.html" title="interface in org.apache.spark">AccumulableParam</a>&lt;<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>,<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">T</a>&gt;&nbsp;param)</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+</li>
+</ul>
+</li>
+</ul>
+<!-- ============ METHOD DETAIL ========== -->
+<ul class="blockList">
+<li class="blockList"><a name="method.detail">
+<!--   -->
+</a>
+<h3>Method Detail</h3>
+<a name="id--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>id</h4>
+<pre>public&nbsp;long&nbsp;id()</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+</li>
+</ul>
+<a name="name--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>name</h4>
+<pre>public&nbsp;scala.Option&lt;String&gt;&nbsp;name()</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+</li>
+</ul>
+<a name="zero--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>zero</h4>
+<pre>public&nbsp;<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>&nbsp;zero()</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+</li>
+</ul>
+<a name="add-java.lang.Object-">
+<!--   -->
+</a><a name="add-T-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>add</h4>
+<pre>public&nbsp;void&nbsp;add(<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">T</a>&nbsp;term)</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Add more data to this accumulator / accumulable</div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>term</code> - the data to add</dd>
+</dl>
+</li>
+</ul>
+<a name="merge-java.lang.Object-">
+<!--   -->
+</a><a name="merge-R-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>merge</h4>
+<pre>public&nbsp;void&nbsp;merge(<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>&nbsp;term)</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Merge two accumulable objects together
+ <p>
+ Normally, a user will not want to use this version, but will instead call <code>add</code>.</div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>term</code> - the other <code>R</code> that will get merged with this</dd>
+</dl>
+</li>
+</ul>
+<a name="value--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>value</h4>
+<pre>public&nbsp;<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>&nbsp;value()</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Access the accumulator's current value; only allowed on driver.</div>
+<dl>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>(undocumented)</dd>
+</dl>
+</li>
+</ul>
+<a name="localValue--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>localValue</h4>
+<pre>public&nbsp;<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>&nbsp;localValue()</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Get the current value of this accumulator from within a task.
+ <p>
+ This is NOT the global value of the accumulator.  To get the global value after a
+ completed operation on the dataset, call <code>value</code>.
+ <p>
+ The typical use of this method is to directly mutate the local value, eg., to add
+ an element to a Set.</div>
+<dl>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>(undocumented)</dd>
+</dl>
+</li>
+</ul>
+<a name="setValue-java.lang.Object-">
+<!--   -->
+</a><a name="setValue-R-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>setValue</h4>
+<pre>public&nbsp;void&nbsp;setValue(<a href="../../../org/apache/spark/Accumulable.html" title="type parameter in Accumulable">R</a>&nbsp;newValue)</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Set the accumulator's value. For internal use only.</div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>newValue</code> - (undocumented)</dd>
+</dl>
+</li>
+</ul>
+<a name="toString--">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>toString</h4>
+<pre>public&nbsp;String&nbsp;toString()</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
+<dd><code>toString</code>&nbsp;in class&nbsp;<code>Object</code></dd>
+</dl>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+</div>
+<!-- ========= END OF CLASS DATA ========= -->
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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/AccumulableParam.html
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+<div class="subTitle">org.apache.spark</div>
+<h2 title="Interface AccumulableParam" class="title">Interface AccumulableParam&lt;R,T&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>
+<dl>
+<dt>All Known Subinterfaces:</dt>
+<dd><a href="../../../org/apache/spark/AccumulatorParam.html" title="interface in org.apache.spark">AccumulatorParam</a>&lt;T&gt;</dd>
+</dl>
+<dl>
+<dt>All Known Implementing Classes:</dt>
+<dd><a href="../../../org/apache/spark/AccumulatorParam.DoubleAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.DoubleAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.FloatAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.FloatAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.IntAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.IntAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.LongAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.LongAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.StringAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.StringAccumulatorParam$</a></dd>
+</dl>
+<hr>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
+<div class="block"><span class="deprecationComment">use AccumulatorV2. Since 2.0.0.</span></div>
+</div>
+<br>
+<pre>public interface <span class="typeNameLabel">AccumulableParam&lt;R,T&gt;</span>
+extends java.io.Serializable</pre>
+<div class="block">Helper object defining how to accumulate values of a particular type. An implicit
+ AccumulableParam needs to be available when you create <a href="../../../org/apache/spark/Accumulable.html" title="class in org.apache.spark"><code>Accumulable</code></a>s of a specific type.
+ <p></div>
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+<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">&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="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/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/AccumulableParam.html#addAccumulator-R-T-">addAccumulator</a></span>(<a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;r,
+              <a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">T</a>&nbsp;t)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Add additional data to the accumulator value.</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code><a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/AccumulableParam.html#addInPlace-R-R-">addInPlace</a></span>(<a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;r1,
+          <a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;r2)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Merge two accumulated values together.</div>
+</td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code><a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/AccumulableParam.html#zero-R-">zero</a></span>(<a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;initialValue)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Return the "zero" (identity) value for an accumulator type, given its initial value.</div>
+</td>
+</tr>
+</table>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="details">
+<ul class="blockList">
+<li class="blockList">
+<!-- ============ METHOD DETAIL ========== -->
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+<li class="blockList"><a name="method.detail">
+<!--   -->
+</a>
+<h3>Method Detail</h3>
+<a name="addAccumulator-java.lang.Object-java.lang.Object-">
+<!--   -->
+</a><a name="addAccumulator-R-T-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>addAccumulator</h4>
+<pre><a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;addAccumulator(<a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;r,
+                 <a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">T</a>&nbsp;t)</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Add additional data to the accumulator value. Is allowed to modify and return <code>r</code>
+ for efficiency (to avoid allocating objects).
+ <p></div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>r</code> - the current value of the accumulator</dd>
+<dd><code>t</code> - the data to be added to the accumulator</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>the new value of the accumulator</dd>
+</dl>
+</li>
+</ul>
+<a name="addInPlace-java.lang.Object-java.lang.Object-">
+<!--   -->
+</a><a name="addInPlace-R-R-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>addInPlace</h4>
+<pre><a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;addInPlace(<a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;r1,
+             <a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;r2)</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Merge two accumulated values together. Is allowed to modify and return the first value
+ for efficiency (to avoid allocating objects).
+ <p></div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>r1</code> - one set of accumulated data</dd>
+<dd><code>r2</code> - another set of accumulated data</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>both data sets merged together</dd>
+</dl>
+</li>
+</ul>
+<a name="zero-java.lang.Object-">
+<!--   -->
+</a><a name="zero-R-">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>zero</h4>
+<pre><a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;zero(<a href="../../../org/apache/spark/AccumulableParam.html" title="type parameter in AccumulableParam">R</a>&nbsp;initialValue)</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Return the "zero" (identity) value for an accumulator type, given its initial value. For
+ example, if R was a vector of N dimensions, this would return a vector of N zeroes.</div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>initialValue</code> - (undocumented)</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>(undocumented)</dd>
+</dl>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
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+    catch(err) {
+    }
+//-->
+var methods = {"i0":41,"i1":41,"i2":41,"i3":41,"i4":41,"i5":41,"i6":41,"i7":41,"i8":41,"i9":41,"i10":41,"i11":41};
+var tabs = {65535:["t0","All Methods"],1:["t1","Static Methods"],8:["t4","Concrete Methods"],32:["t6","Deprecated Methods"]};
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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 Accumulator" class="title">Class Accumulator&lt;T&gt;</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>Object</li>
+<li>
+<ul class="inheritance">
+<li><a href="../../../org/apache/spark/Accumulable.html" title="class in org.apache.spark">org.apache.spark.Accumulable</a>&lt;T,T&gt;</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.spark.Accumulator&lt;T&gt;</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>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
+<div class="block"><span class="deprecationComment">use AccumulatorV2. Since 2.0.0.</span></div>
+</div>
+<br>
+<pre>public class <span class="typeNameLabel">Accumulator&lt;T&gt;</span>
+extends <a href="../../../org/apache/spark/Accumulable.html" title="class in org.apache.spark">Accumulable</a>&lt;T,T&gt;</pre>
+<div class="block">A simpler value of <a href="../../../org/apache/spark/Accumulable.html" title="class in org.apache.spark"><code>Accumulable</code></a> where the result type being accumulated is the same
+ as the types of elements being merged, i.e. variables that are only "added" to through an
+ associative and commutative operation and can therefore be efficiently supported in parallel.
+ They can be used to implement counters (as in MapReduce) or sums. Spark natively supports
+ accumulators of numeric value types, and programmers can add support for new types.
+ <p>
+ An accumulator is created from an initial value <code>v</code> by calling <code>SparkContext.accumulator</code>.
+ Tasks running on the cluster can then add to it using the <code>+=</code> operator.
+ However, they cannot read its value. Only the driver program can read the accumulator's value,
+ using its <a href="../../../org/apache/spark/Accumulator.html#value--"><code>value()</code></a> method.
+ <p>
+ The interpreter session below shows an accumulator being used to add up the elements of an array:
+ <p>
+ <pre><code>
+ scala&gt; val accum = sc.accumulator(0)
+ accum: org.apache.spark.Accumulator[Int] = 0
+
+ scala&gt; sc.parallelize(Array(1, 2, 3, 4)).foreach(x =&gt; accum += x)
+ ...
+ 10/09/29 18:41:08 INFO SparkContext: Tasks finished in 0.317106 s
+
+ scala&gt; accum.value
+ res2: Int = 10
+ </code></pre>
+ <p>
+ param:  initialValue initial value of accumulator
+ param:  param helper object defining how to add elements of type <code>T</code>
+ param:  name human-readable name associated with this accumulator
+ param:  countFailedValues whether to accumulate values from failed tasks</div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../serialized-form.html#org.apache.spark.Accumulator">Serialized Form</a></dd>
+</dl>
+</li>
+</ul>
+</div>
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+<td class="colFirst"><code>static void</code></td>
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+<td class="colFirst"><code>static long</code></td>
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+<td class="colFirst"><code>static R</code></td>
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+<td class="colFirst"><code>static void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulator.html#merge-R-">merge</a></span>(R&nbsp;term)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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+<td class="colFirst"><code>static scala.Option&lt;String&gt;</code></td>
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+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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+<tr id="i8" class="altColor">
+<td class="colFirst"><code>static String</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/Accumulator.html#toString--">toString</a></span>()</code>
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+<td class="colFirst"><code>static void</code></td>
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+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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+<h4>setValue</h4>
+<pre>public static&nbsp;void&nbsp;setValue(R&nbsp;newValue)</pre>
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+<h2 title="Class AccumulatorParam.DoubleAccumulatorParam$" class="title">Class AccumulatorParam.DoubleAccumulatorParam$</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>Object</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.spark.AccumulatorParam.DoubleAccumulatorParam$</li>
+</ul>
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+</dl>
+<dl>
+<dt>Enclosing interface:</dt>
+<dd><a href="../../../org/apache/spark/AccumulatorParam.html" title="interface in org.apache.spark">AccumulatorParam</a>&lt;<a href="../../../org/apache/spark/AccumulatorParam.html" title="type parameter in AccumulatorParam">T</a>&gt;</dd>
+</dl>
+<hr>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
+<div class="block"><span class="deprecationComment">use AccumulatorV2. Since 2.0.0.</span></div>
+</div>
+<br>
+<pre>public static class <span class="typeNameLabel">AccumulatorParam.DoubleAccumulatorParam$</span>
+extends Object
+implements <a href="../../../org/apache/spark/AccumulatorParam.html" title="interface in org.apache.spark">AccumulatorParam</a>&lt;Object&gt;</pre>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../serialized-form.html#org.apache.spark.AccumulatorParam.DoubleAccumulatorParam$">Serialized Form</a></dd>
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+<code><a href="../../../org/apache/spark/AccumulatorParam.DoubleAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.DoubleAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.FloatAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.FloatAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.IntAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.IntAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.LongAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.LongAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.StringAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.StringAccumulatorParam$</a></code></li>
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+<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Field and Description</th>
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+<tr class="altColor">
+<td class="colFirst"><code>static <a href="../../../org/apache/spark/AccumulatorParam.DoubleAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.DoubleAccumulatorParam$</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/AccumulatorParam.DoubleAccumulatorParam$.html#MODULE:D">MODULE$</a></span></code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Static reference to the singleton instance of this Scala object.</div>
+</td>
+</tr>
+</table>
+</li>
+</ul>
+<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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+<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colOne" scope="col">Constructor and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/apache/spark/AccumulatorParam.DoubleAccumulatorParam$.html#DoubleAccumulatorParam:D--">DoubleAccumulatorParam$</a></span>()</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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+          double&nbsp;t2)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+&nbsp;</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>double</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/AccumulatorParam.DoubleAccumulatorParam$.html#zero-double-">zero</a></span>(double&nbsp;initialValue)</code>
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+<code><a href="../../../org/apache/spark/AccumulableParam.html#addInPlace-R-R-">addInPlace</a>, <a href="../../../org/apache/spark/AccumulableParam.html#zero-R-">zero</a></code></li>
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+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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+                         double&nbsp;t2)</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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+<div class="subTitle">org.apache.spark</div>
+<h2 title="Class AccumulatorParam.FloatAccumulatorParam$" class="title">Class AccumulatorParam.FloatAccumulatorParam$</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>Object</li>
+<li>
+<ul class="inheritance">
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+<dt>Enclosing interface:</dt>
+<dd><a href="../../../org/apache/spark/AccumulatorParam.html" title="interface in org.apache.spark">AccumulatorParam</a>&lt;<a href="../../../org/apache/spark/AccumulatorParam.html" title="type parameter in AccumulatorParam">T</a>&gt;</dd>
+</dl>
+<hr>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
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+</div>
+<br>
+<pre>public static class <span class="typeNameLabel">AccumulatorParam.FloatAccumulatorParam$</span>
+extends Object
+implements <a href="../../../org/apache/spark/AccumulatorParam.html" title="interface in org.apache.spark">AccumulatorParam</a>&lt;Object&gt;</pre>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../serialized-form.html#org.apache.spark.AccumulatorParam.FloatAccumulatorParam$">Serialized Form</a></dd>
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+<code><a href="../../../org/apache/spark/AccumulatorParam.DoubleAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.DoubleAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.FloatAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.FloatAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.IntAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.IntAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.LongAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.LongAccumulatorParam$</a>, <a href="../../../org/apache/spark/AccumulatorParam.StringAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.StringAccumulatorParam$</a></code></li>
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+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Field and Description</th>
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+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/AccumulatorParam.FloatAccumulatorParam$.html#MODULE:D">MODULE$</a></span></code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Static reference to the singleton instance of this Scala object.</div>
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+<th class="colOne" scope="col">Constructor and Description</th>
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+<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/apache/spark/AccumulatorParam.FloatAccumulatorParam$.html#FloatAccumulatorParam:D--">FloatAccumulatorParam$</a></span>()</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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+<th class="colLast" scope="col">Method and Description</th>
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+<tr id="i0" class="altColor">
+<td class="colFirst"><code>float</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/AccumulatorParam.FloatAccumulatorParam$.html#addInPlace-float-float-">addInPlace</a></span>(float&nbsp;t1,
+          float&nbsp;t2)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+&nbsp;</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>float</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/spark/AccumulatorParam.FloatAccumulatorParam$.html#zero-float-">zero</a></span>(float&nbsp;initialValue)</code>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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+<code><a href="../../../org/apache/spark/AccumulatorParam.html#addAccumulator-T-T-">addAccumulator</a></code></li>
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+<code><a href="../../../org/apache/spark/AccumulableParam.html#addInPlace-R-R-">addInPlace</a>, <a href="../../../org/apache/spark/AccumulableParam.html#zero-R-">zero</a></code></li>
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+<li class="blockList">
+<h4>MODULE$</h4>
+<pre>public static final&nbsp;<a href="../../../org/apache/spark/AccumulatorParam.FloatAccumulatorParam$.html" title="class in org.apache.spark">AccumulatorParam.FloatAccumulatorParam$</a> MODULE$</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+<div class="block">Static reference to the singleton instance of this Scala object.</div>
+</li>
+</ul>
+</li>
+</ul>
+<!-- ========= CONSTRUCTOR DETAIL ======== -->
+<ul class="blockList">
+<li class="blockList"><a name="constructor.detail">
+<!--   -->
+</a>
+<h3>Constructor Detail</h3>
+<a name="FloatAccumulatorParam:D--">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>FloatAccumulatorParam$</h4>
+<pre>public&nbsp;FloatAccumulatorParam$()</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+</li>
+</ul>
+</li>
+</ul>
+<!-- ============ METHOD DETAIL ========== -->
+<ul class="blockList">
+<li class="blockList"><a name="method.detail">
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+<a name="addInPlace-float-float-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>addInPlace</h4>
+<pre>public&nbsp;float&nbsp;addInPlace(float&nbsp;t1,
+                        float&nbsp;t2)</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+</li>
+</ul>
+<a name="zero-float-">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>zero</h4>
+<pre>public&nbsp;float&nbsp;zero(float&nbsp;initialValue)</pre>
+<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
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