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From da...@apache.org
Subject [29/52] [partial] beam-site git commit: Publish Javadoc for version 0.4.0
Date Mon, 09 Jan 2017 22:32:04 GMT
http://git-wip-us.apache.org/repos/asf/beam-site/blob/de6a0417/content/documentation/sdks/javadoc/0.4.0/org/apache/beam/runners/core/SystemReduceFn.html
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+<title>SystemReduceFn (Apache Beam SDK for Java, version 0.4.0)</title>
+<meta name="date" content="2016-12-29">
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+<li>Summary:&nbsp;</li>
+<li><a href="#nested.classes.inherited.from.class.org.apache.beam.runners.core.ReduceFn">Nested</a>&nbsp;|&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
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+<!-- ======== START OF CLASS DATA ======== -->
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+<div class="subTitle">org.apache.beam.runners.core</div>
+<h2 title="Class SystemReduceFn" class="title">Class SystemReduceFn&lt;K,InputT,AccumT,OutputT,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>&gt;</h2>
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+<ul class="inheritance">
+<li><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
+<li>
+<ul class="inheritance">
+<li><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">org.apache.beam.runners.core.ReduceFn</a>&lt;K,InputT,OutputT,W&gt;</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.beam.runners.core.SystemReduceFn&lt;K,InputT,AccumT,OutputT,W&gt;</li>
+</ul>
+</li>
+</ul>
+</li>
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+<dt><span class="paramLabel">Type Parameters:</span></dt>
+<dd><code>K</code> - The type of key being processed.</dd>
+<dd><code>InputT</code> - The type of values associated with the key.</dd>
+<dd><code>OutputT</code> - The output type that will be produced for each key.</dd>
+<dd><code>W</code> - The type of windows this operates on.</dd>
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+<dt>All Implemented Interfaces:</dt>
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+<pre>public abstract class <span class="typeNameLabel">SystemReduceFn&lt;K,InputT,AccumT,OutputT,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>&gt;</span>
+extends <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a>&lt;K,InputT,OutputT,W&gt;</pre>
+<div class="block"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core"><code>ReduceFn</code></a> implementing the default reduction behaviors of <a href="../../../../../org/apache/beam/sdk/transforms/GroupByKey.html" title="class in org.apache.beam.sdk.transforms"><code>GroupByKey</code></a>.</div>
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+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../../../serialized-form.html#org.apache.beam.runners.core.SystemReduceFn">Serialized Form</a></dd>
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+<code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a>, <a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnMergeContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnMergeContext</a>, <a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnTriggerContext</a>, <a href="../../../../../org/apache/beam/runners/core/ReduceFn.ProcessValueContext.html" title="class in org.apache.beam.runners.core">ReduceFn.ProcessValueContext</a></code></li>
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+<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colOne" scope="col">Constructor and Description</th>
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+<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#SystemReduceFn-org.apache.beam.sdk.util.state.StateTag-">SystemReduceFn</a></span>(<a href="../../../../../org/apache/beam/sdk/util/state/StateTag.html" title="interface in org.apache.beam.sdk.util.state">StateTag</a>&lt;? super <a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">K</a>,? extends <a href="../../../../../org/apache/beam/sdk/util/state/CombiningState.html" title="interface in org.apache.beam.sdk.util.state">CombiningState</a>&lt;<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">InputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">OutputT</a>&gt;&gt;&nbsp;bufferTag)</code>&nbsp;</td>
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+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete 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>
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+<td class="colFirst"><code>static &lt;K,T,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>&gt;<br><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="class in org.apache.beam.runners.core">SystemReduceFn</a>&lt;K,T,<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;T&gt;,<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;T&gt;,W&gt;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#buffering-org.apache.beam.sdk.coders.Coder-">buffering</a></span>(<a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders">Coder</a>&lt;T&gt;&nbsp;inputCoder)</code>
+<div class="block">Create a factory that produces <a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="class in org.apache.beam.runners.core"><code>SystemReduceFn</code></a> instances that that buffer all of the
+ input values in persistent state and produces an <code>Iterable&lt;T&gt;</code>.</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#clearState-org.apache.beam.runners.core.ReduceFn.Context-">clearState</a></span>(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a>&nbsp;c)</code>
+<div class="block">Called to clear any persisted state that the <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core"><code>ReduceFn</code></a> may be holding.</div>
+</td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code>static &lt;K,InputT,AccumT,OutputT,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>&gt;<br><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="class in org.apache.beam.runners.core">SystemReduceFn</a>&lt;K,InputT,AccumT,OutputT,W&gt;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#combining-org.apache.beam.sdk.coders.Coder-org.apache.beam.sdk.util.AppliedCombineFn-">combining</a></span>(<a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders">Coder</a>&lt;K&gt;&nbsp;keyCoder,
+         <a href="../../../../../org/apache/beam/sdk/util/AppliedCombineFn.html" title="class in org.apache.beam.sdk.util">AppliedCombineFn</a>&lt;K,InputT,AccumT,OutputT&gt;&nbsp;combineFn)</code>
+<div class="block">Create a factory that produces <a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="class in org.apache.beam.runners.core"><code>SystemReduceFn</code></a> instances that combine all of the input
+ values using a <a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms"><code>Combine.CombineFn</code></a>.</div>
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+<div class="block">Returns true if the there is no buffered state.</div>
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+<tr id="i4" class="altColor">
+<td class="colFirst"><code>void</code></td>
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+<div class="block">Called when triggers fire.</div>
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+<tr id="i5" class="rowColor">
+<td class="colFirst"><code>void</code></td>
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+<div class="block">Called before <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-"><code>ReduceFn.onTrigger(org.apache.beam.runners.core.ReduceFn&lt;K, InputT, OutputT, W&gt;.OnTriggerContext)</code></a> is invoked to provide an opportunity to prefetch any needed
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+</td>
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+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#processValue-org.apache.beam.runners.core.ReduceFn.ProcessValueContext-">processValue</a></span>(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.ProcessValueContext.html" title="class in org.apache.beam.runners.core">ReduceFn.ProcessValueContext</a>&nbsp;c)</code>
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+<div class="bottomNav"><a name="navbar.bottom">
+<!--   -->
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+<li>Field&nbsp;|&nbsp;</li>
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+<li>Summary:&nbsp;</li>
+<li><a href="#nested.classes.inherited.from.class.org.apache.beam.sdk.io.UnboundedSource">Nested</a>&nbsp;|&nbsp;</li>
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+<div class="subTitle">org.apache.beam.runners.core</div>
+<h2 title="Class UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter" class="title">Class UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter&lt;T&gt;</h2>
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+<div class="contentContainer">
+<ul class="inheritance">
+<li><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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+<dt>All Implemented Interfaces:</dt>
+<dd><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display">HasDisplayData</a></dd>
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+<dd><a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.html" title="class in org.apache.beam.runners.core">UnboundedReadFromBoundedSource</a>&lt;<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.html" title="type parameter in UnboundedReadFromBoundedSource">T</a>&gt;</dd>
+</dl>
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+<br>
+<pre>public static class <span class="typeNameLabel">UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter&lt;T&gt;</span>
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+<div class="block">A <code>BoundedSource</code> to <code>UnboundedSource</code> adapter.</div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../../../serialized-form.html#org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">Serialized Form</a></dd>
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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/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html#BoundedToUnboundedSourceAdapter-org.apache.beam.sdk.io.BoundedSource-">BoundedToUnboundedSourceAdapter</a></span>(<a href="../../../../../org/apache/beam/sdk/io/BoundedSource.html" title="class in org.apache.beam.sdk.io">BoundedSource</a>&lt;<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>&gt;&nbsp;boundedSource)</code>&nbsp;</td>
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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="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete 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>org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Reader</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html#createReader-org.apache.beam.sdk.options.PipelineOptions-org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint-">createReader</a></span>(<a href="../../../../../org/apache/beam/sdk/options/PipelineOptions.html" title="interface in org.apache.beam.sdk.options">PipelineOptions</a>&nbsp;options,
+            org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint&lt;<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>&gt;&nbsp;checkpoint)</code>
+<div class="block">Create a new <a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.UnboundedReader.html" title="class in org.apache.beam.sdk.io"><code>UnboundedSource.UnboundedReader</code></a> to read from this source, resuming from the given
+ checkpoint if present.</div>
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+<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="class in org.apache.beam.runners.core">UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter</a>&lt;<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>&gt;&gt;</code></td>
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+                     <a href="../../../../../org/apache/beam/sdk/options/PipelineOptions.html" title="interface in org.apache.beam.sdk.options">PipelineOptions</a>&nbsp;options)</code>
+<div class="block">Returns a list of <code>UnboundedSource</code> objects representing the instances of this source
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+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders">Coder</a>&lt;org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint&lt;<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>&gt;&gt;</code></td>
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+<td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders">Coder</a>&lt;<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>&gt;</code></td>
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+</td>
+</tr>
+<tr id="i4" class="altColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html#validate--">validate</a></span>()</code>
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+<div class="block">Checks that this source is valid, before it can be used in a pipeline.
+
+ <p>It is recommended to use <code>Preconditions</code> for implementing
+ this method.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../../../org/apache/beam/sdk/io/Source.html#validate--">validate</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/beam/sdk/io/Source.html" title="class in org.apache.beam.sdk.io">Source</a>&lt;<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>&gt;</code></dd>
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+                                                                                                     <a href="../../../../../org/apache/beam/sdk/options/PipelineOptions.html" title="interface in org.apache.beam.sdk.options">PipelineOptions</a>&nbsp;options)
+                                                                                              throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre>
+<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html#generateInitialSplits-int-org.apache.beam.sdk.options.PipelineOptions-">UnboundedSource</a></code></span></div>
+<div class="block">Returns a list of <code>UnboundedSource</code> objects representing the instances of this source
+ that should be used when executing the workflow.  Each split should return a separate partition
+ of the input data.
+
+ <p>For example, for a source reading from a growing directory of files, each split
+ could correspond to a prefix of file names.
+
+ <p>Some sources are not splittable, such as reading from a single TCP stream.  In that
+ case, only a single split should be returned.
+
+ <p>Some data sources automatically partition their data among readers.  For these types of
+ inputs, <code>n</code> identical replicas of the top-level source can be returned.
+
+ <p>The size of the returned list should be as close to <code>desiredNumSplits</code>
+ as possible, but does not have to match exactly.  A low number of splits
+ will limit the amount of parallelism in the source.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
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+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd>
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+</ul>
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+<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html#createReader-org.apache.beam.sdk.options.PipelineOptions-CheckpointMarkT-">UnboundedSource</a></code></span></div>
+<div class="block">Create a new <a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.UnboundedReader.html" title="class in org.apache.beam.sdk.io"><code>UnboundedSource.UnboundedReader</code></a> to read from this source, resuming from the given
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+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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