|
|
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>
Spark Streaming | Apache Spark
</title>
<!-- Bootstrap core CSS -->
<link href="/css/cerulean.min.css" rel="stylesheet">
<link href="/css/custom.css" rel="stylesheet">
<script type="text/javascript">
<!-- Google Analytics initialization -->
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-32518208-2']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
<!-- Adds slight delay to links to allow async reporting -->
function trackOutboundLink(link, category, action) {
try {
_gaq.push(['_trackEvent', category , action]);
} catch(err){}
setTimeout(function() {
document.location.href = link.href;
}, 100);
}
</script>
<!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script src="https://oss.maxcdn.com/libs/respond.js/1.3.0/respond.min.js"></script>
<![endif]-->
</head>
<body>
<script src="https://code.jquery.com/jquery.js"></script>
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
<script src="/js/lang-tabs.js"></script>
<script src="/js/downloads.js"></script>
<div class="container" style="max-width: 1200px;">
<div class="masthead">
<p class="lead">
<a href="/">
<img src="/images/spark-logo.png"
style="height:100px; width:auto; vertical-align: bottom; margin-top: 20px;"></a>
<a href="#"><span class="subproject">
Streaming
</span></a>
</p>
</div>
<nav class="navbar navbar-default" role="navigation">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse"
data-target="#navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="/downloads.html">Download</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">
Libraries <b class="caret"></b>
</a>
<ul class="dropdown-menu">
<li><a href="/">Apache Spark</a></li>
<li><a href="/sql/">Spark SQL</a></li>
<li><a href="/streaming/">Spark Streaming</a></li>
<li><a href="/mllib/">MLlib (machine learning)</a></li>
<li><a href="/graphx/">GraphX (graph)</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">
Documentation <b class="caret"></b>
</a>
<ul class="dropdown-menu">
<li><a href="/documentation.html">Overview</a></li>
<li><a href="/docs/latest/">Latest Release (Spark 1.1.0)</a></li>
</ul>
</li>
<li><a href="/examples.html">Examples</a></li>
<li class="dropdown">
<a href="/community.html" class="dropdown-toggle" data-toggle="dropdown">
Community <b class="caret"></b>
</a>
<ul class="dropdown-menu">
<li><a href="/community.html">Mailing Lists</a></li>
<li><a href="/community.html#events">Events and Meetups</a></li>
<li><a href="/community.html#history">Project History</a></li>
<li><a href="https://cwiki.apache.org/confluence/display/SPARK/Powered+By+Spark">Powered By</a></li>
<li><a href="https://cwiki.apache.org/confluence/display/SPARK/Committers">Project Committers</a></li>
<li><a href="https://issues.apache.org/jira/browse/SPARK">Issue Tracker</a></li>
</ul>
</li>
<li><a href="/faq.html">FAQ</a></li>
</ul>
</div>
<!-- /.navbar-collapse -->
</nav>
<div class="row">
<div class="col-md-3 col-md-push-9">
<div class="news" style="margin-bottom: 20px;">
<h5>Latest News</h5>
<ul class="list-unstyled">
<li><a href="/news/registration-open-for-spark-summit-east.html">Registration open for Spark Summit East 2015</a>
<span class="small">(Nov 26, 2014)</span></li>
<li><a href="/news/spark-wins-daytona-gray-sort-100tb-benchmark.html">Spark wins Daytona Gray Sort 100TB Benchmark</a>
<span class="small">(Nov 05, 2014)</span></li>
<li><a href="/news/proposals-open-for-spark-summit-east.html">Submissions open for Spark Summit East 2015 in New York</a>
<span class="small">(Oct 18, 2014)</span></li>
<li><a href="/news/spark-1-1-0-released.html">Spark 1.1.0 released</a>
<span class="small">(Sep 11, 2014)</span></li>
</ul>
<p class="small" style="text-align: right;"><a href="/news/index.html">Archive</a></p>
</div>
<div class="hidden-xs hidden-sm">
<a href="/downloads.html" class="btn btn-success btn-lg btn-block" style="margin-bottom: 30px;">
Download Spark
</a>
<p style="font-size: 16px; font-weight: 500; color: #555;">
Built-in Libraries:
</p>
<ul class="list-narrow">
<li><a href="/sql/">Spark SQL</a></li>
<li><a href="/streaming/">Spark Streaming</a></li>
<li><a href="/mllib/">MLlib (machine learning)</a></li>
<li><a href="/graphx/">GraphX (graph)</a></li>
</ul>
</div>
</div>
<div class="col-md-9 col-md-pull-3">
<div class="jumbotron">
<b>Spark Streaming</b> makes it easy to build scalable fault-tolerant streaming
applications.
</div>
<div class="row row-padded">
<div class="col-md-7 col-sm-7">
<h2>Ease of Use</h2>
<p class="lead">
Build applications through high-level operators.
</p>
<p>
Spark Streaming brings <a href="/">Spark</a>'s
language-integrated API to stream processing,
letting you write streaming applications the same way you write batch jobs.
It supports both Java and Scala.
</p>
</div>
<div class="col-md-5 col-sm-5 col-padded-top col-center">
<div style="margin-top: 15px; text-align: left; display: inline-block;">
<div class="code">
TwitterUtils.createStream(...)<br />
.<span class="sparkop">filter</span>(<span class="closure">_.getText.contains("Spark")</span>)<br />
.<span class="sparkop">countByWindow</span>(Seconds(5))
</div>
<div class="caption">Counting tweets on a sliding window</div>
</div>
</div>
</div>
<div class="row row-padded">
<div class="col-md-7 col-sm-7">
<h2>Fault Tolerance</h2>
<p class="lead">
Stateful exactly-once semantics out of the box.
</p>
<p>
Spark Streaming recovers both lost work
and operator state (e.g. sliding windows) out of the box, without any extra code on your part.
</p>
</div>
<div class="col-md-5 col-sm-5 col-padded-top col-center">
<div style="width: 100%; max-width: 300px; display: inline-block;">
<img src="/images/spark-streaming-recovery.png" style="width: 100%; max-width: 300px;" />
</div>
</div>
</div>
<div class="row row-padded">
<div class="col-md-7 col-sm-7">
<h2>Spark Integration</h2>
<p class="lead">
Combine streaming with batch and interactive queries.
</p>
<p>
By running on Spark, Spark Streaming lets you reuse the same code for batch
processing, join streams against historical data, or run ad-hoc
queries on stream state.
Build powerful interactive applications, not just analytics.
</p>
</div>
<div class="col-md-5 col-sm-5 col-padded-top col-center">
<div style="margin-top: 20px; text-align: left; display: inline-block;">
<div class="code">
stream.<span class="sparkop">join</span>(historicCounts).<span class="sparkop">filter</span> {<span class="closure"><br />
case (word, (curCount, oldCount)) =><br />
curCount > oldCount<br />
</span>}
</div>
<div class="caption">Find words with higher frequency than historic data</div>
</div>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-4 col-padded">
<h3>Deployment Options</h3>
<p>
Spark Streaming can read data from
<a href="http://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HdfsUserGuide.html">HDFS</a>,
<a href="http://flume.apache.org">Flume</a>,
<a href="http://kafka.apache.org">Kafka</a>,
<a href="https://dev.twitter.com">Twitter</a> and
<a href="http://zeromq.org">ZeroMQ</a>.
You can also define your own custom data sources.
</p>
<p>
You can run Spark Streaming on Spark's <a href="/docs/latest/spark-standalone.html">standalone cluster mode</a>
or <a href="/docs/latest/ec2-scripts.html">EC2</a>.
It also includes a local run mode for development.
In production,
Spark Streaming uses <a href="http://zookeeper.apache.org">ZooKeeper</a> and <a href="http://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HdfsUserGuide.html">HDFS</a> for high availability.
</p>
</div>
<div class="col-md-4 col-padded">
<h3>Community</h3>
<p>
Spark Streaming is developed as part of Apache Spark. It thus gets
tested and updated with each Spark release.
</p>
<p>
If you have questions about the system, ask on the
<a href="/community.html#mailing-lists">Spark mailing lists</a>.
</p>
<p>
The Spark Streaming developers welcome contributions. If you'd like to help out,
read <a href="https://cwiki.apache.org/confluence/display/SPARK/Contributing+to+Spark">how to
contribute to Spark</a>, and send us a patch!
</p>
</div>
<div class="col-md-4 col-padded">
<h3>Getting Started</h3>
<p>
To get started with Spark Streaming:
</p>
<ul class="list-narrow">
<li><a href="/downloads.html">Download Spark</a>. It includes Streaming as a module.</li>
<li>Read the <a href="/docs/latest/streaming-programming-guide.html">Spark Streaming programming guide</a>, which includes a tutorial and describes system architecture, configuration and high availability.</li>
<li>Check out example programs in <a href="https://github.com/apache/incubator-spark/tree/master/examples/src/main/scala/org/apache/spark/streaming/examples">Scala</a> and <a href="https://github.com/apache/incubator-spark/tree/master/examples/src/main/java/org/apache/spark/streaming/examples">Java</a>.</li>
</ul>
</div>
</div>
<div class="row">
<div class="col-sm-12 col-center">
<a href="/downloads.html" class="btn btn-success btn-lg btn-multiline">
Download Spark<br /><span class="small">Includes Spark Streaming</span>
</a>
</div>
</div>
<footer class="small">
<hr>
Apache Spark, Spark, Apache, and the Spark logo are trademarks of
<a href="http://www.apache.org">The Apache Software Foundation</a>.
</footer>
</div>
</body>
</html>
|