| <!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"> |
| <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags --> |
| <title>Apache Flink: December 2014 in the Flink community</title> |
| <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon"> |
| <link rel="icon" href="/favicon.ico" type="image/x-icon"> |
| |
| <!-- Bootstrap --> |
| <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"> |
| <link rel="stylesheet" href="/css/flink.css"> |
| <link rel="stylesheet" href="/css/syntax.css"> |
| |
| <!-- Blog RSS feed --> |
| <link href="/blog/feed.xml" rel="alternate" type="application/rss+xml" title="Apache Flink Blog: RSS feed" /> |
| |
| <!-- jQuery (necessary for Bootstrap's JavaScript plugins) --> |
| <!-- We need to load Jquery in the header for custom google analytics event tracking--> |
| <script src="/js/jquery.min.js"></script> |
| |
| <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries --> |
| <!-- WARNING: Respond.js doesn't work if you view the page via file:// --> |
| <!--[if lt IE 9]> |
| <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script> |
| <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> |
| <![endif]--> |
| </head> |
| <body> |
| |
| |
| <!-- Main content. --> |
| <div class="container"> |
| <div class="row"> |
| |
| |
| <div id="sidebar" class="col-sm-3"> |
| |
| |
| <!-- Top navbar. --> |
| <nav class="navbar navbar-default"> |
| <!-- The logo. --> |
| <div class="navbar-header"> |
| <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| </button> |
| <div class="navbar-logo"> |
| <a href="/"> |
| <img alt="Apache Flink" src="/img/flink-header-logo.svg" width="147px" height="73px"> |
| </a> |
| </div> |
| </div><!-- /.navbar-header --> |
| |
| <!-- The navigation links. --> |
| <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> |
| <ul class="nav navbar-nav navbar-main"> |
| |
| <!-- First menu section explains visitors what Flink is --> |
| |
| <!-- What is Stream Processing? --> |
| <!-- |
| <li><a href="/streamprocessing1.html">What is Stream Processing?</a></li> |
| --> |
| |
| <!-- What is Flink? --> |
| <li><a href="/flink-architecture.html">What is Apache Flink?</a></li> |
| |
| |
| |
| <!-- What is Stateful Functions? --> |
| |
| <li><a href="/stateful-functions.html">What is Stateful Functions?</a></li> |
| |
| <!-- Use cases --> |
| <li><a href="/usecases.html">Use Cases</a></li> |
| |
| <!-- Powered by --> |
| <li><a href="/poweredby.html">Powered By</a></li> |
| |
| |
| |
| <!-- Second menu section aims to support Flink users --> |
| |
| <!-- Downloads --> |
| <li><a href="/downloads.html">Downloads</a></li> |
| |
| <!-- Getting Started --> |
| <li class="dropdown"> |
| <a class="dropdown-toggle" data-toggle="dropdown" href="#">Getting Started<span class="caret"></span></a> |
| <ul class="dropdown-menu"> |
| <li><a href="https://ci.apache.org/projects/flink/flink-docs-release-1.10/getting-started/index.html" target="_blank">With Flink <small><span class="glyphicon glyphicon-new-window"></span></small></a></li> |
| <li><a href="https://ci.apache.org/projects/flink/flink-statefun-docs-release-2.1/getting-started/project-setup.html" target="_blank">With Flink Stateful Functions <small><span class="glyphicon glyphicon-new-window"></span></small></a></li> |
| <li><a href="/training.html">Training Course</a></li> |
| </ul> |
| </li> |
| |
| <!-- Documentation --> |
| <li class="dropdown"> |
| <a class="dropdown-toggle" data-toggle="dropdown" href="#">Documentation<span class="caret"></span></a> |
| <ul class="dropdown-menu"> |
| <li><a href="https://ci.apache.org/projects/flink/flink-docs-release-1.10" target="_blank">Flink 1.10 (Latest stable release) <small><span class="glyphicon glyphicon-new-window"></span></small></a></li> |
| <li><a href="https://ci.apache.org/projects/flink/flink-docs-master" target="_blank">Flink Master (Latest Snapshot) <small><span class="glyphicon glyphicon-new-window"></span></small></a></li> |
| <li><a href="https://ci.apache.org/projects/flink/flink-statefun-docs-release-2.1" target="_blank">Flink Stateful Functions 2.1 (Latest stable release) <small><span class="glyphicon glyphicon-new-window"></span></small></a></li> |
| <li><a href="https://ci.apache.org/projects/flink/flink-statefun-docs-master" target="_blank">Flink Stateful Functions Master (Latest Snapshot) <small><span class="glyphicon glyphicon-new-window"></span></small></a></li> |
| </ul> |
| </li> |
| |
| <!-- getting help --> |
| <li><a href="/gettinghelp.html">Getting Help</a></li> |
| |
| <!-- Blog --> |
| <li class="active"><a href="/blog/"><b>Flink Blog</b></a></li> |
| |
| |
| <!-- Flink-packages --> |
| <li> |
| <a href="https://flink-packages.org" target="_blank">flink-packages.org <small><span class="glyphicon glyphicon-new-window"></span></small></a> |
| </li> |
| |
| |
| <!-- Third menu section aim to support community and contributors --> |
| |
| <!-- Community --> |
| <li><a href="/community.html">Community & Project Info</a></li> |
| |
| <!-- Roadmap --> |
| <li><a href="/roadmap.html">Roadmap</a></li> |
| |
| <!-- Contribute --> |
| <li><a href="/contributing/how-to-contribute.html">How to Contribute</a></li> |
| |
| |
| <!-- GitHub --> |
| <li> |
| <a href="https://github.com/apache/flink" target="_blank">Flink on GitHub <small><span class="glyphicon glyphicon-new-window"></span></small></a> |
| </li> |
| |
| |
| |
| <!-- Language Switcher --> |
| <li> |
| |
| |
| <!-- link to the Chinese home page when current is blog page --> |
| <a href="/zh">中文版</a> |
| |
| |
| </li> |
| |
| </ul> |
| |
| <ul class="nav navbar-nav navbar-bottom"> |
| <hr /> |
| |
| <!-- Twitter --> |
| <li><a href="https://twitter.com/apacheflink" target="_blank">@ApacheFlink <small><span class="glyphicon glyphicon-new-window"></span></small></a></li> |
| |
| <!-- Visualizer --> |
| <li class=" hidden-md hidden-sm"><a href="/visualizer/" target="_blank">Plan Visualizer <small><span class="glyphicon glyphicon-new-window"></span></small></a></li> |
| |
| <hr /> |
| |
| <li><a href="https://apache.org" target="_blank">Apache Software Foundation <small><span class="glyphicon glyphicon-new-window"></span></small></a></li> |
| |
| <li> |
| <style> |
| .smalllinks:link { |
| display: inline-block !important; background: none; padding-top: 0px; padding-bottom: 0px; padding-right: 0px; min-width: 75px; |
| } |
| </style> |
| |
| <a class="smalllinks" href="https://www.apache.org/licenses/" target="_blank">License</a> <small><span class="glyphicon glyphicon-new-window"></span></small> |
| |
| <a class="smalllinks" href="https://www.apache.org/security/" target="_blank">Security</a> <small><span class="glyphicon glyphicon-new-window"></span></small> |
| |
| <a class="smalllinks" href="https://www.apache.org/foundation/sponsorship.html" target="_blank">Donate</a> <small><span class="glyphicon glyphicon-new-window"></span></small> |
| |
| <a class="smalllinks" href="https://www.apache.org/foundation/thanks.html" target="_blank">Thanks</a> <small><span class="glyphicon glyphicon-new-window"></span></small> |
| </li> |
| |
| </ul> |
| </div><!-- /.navbar-collapse --> |
| </nav> |
| |
| </div> |
| <div class="col-sm-9"> |
| <div class="row-fluid"> |
| <div class="col-sm-12"> |
| <div class="row"> |
| <h1>December 2014 in the Flink community</h1> |
| <p><i></i></p> |
| |
| <article> |
| <p>06 Jan 2015</p> |
| |
| <p>This is the first blog post of a “newsletter” like series where we give a summary of the monthly activity in the Flink community. As the Flink project grows, this can serve as a “tl;dr” for people that are not following the Flink dev and user mailing lists, or those that are simply overwhelmed by the traffic.</p> |
| |
| <h3 id="flink-graduation">Flink graduation</h3> |
| |
| <p>The biggest news is that the Apache board approved Flink as a top-level Apache project! The Flink team is working closely with the Apache press team for an official announcement, so stay tuned for details!</p> |
| |
| <h3 id="new-flink-website">New Flink website</h3> |
| |
| <p>The <a href="http://flink.apache.org">Flink website</a> got a total make-over, both in terms of appearance and content.</p> |
| |
| <h3 id="flink-irc-channel">Flink IRC channel</h3> |
| |
| <p>A new IRC channel called #flink was created at irc.freenode.org. An easy way to access the IRC channel is through the <a href="http://webchat.freenode.net/">web client</a>. Feel free to stop by to ask anything or share your ideas about Apache Flink!</p> |
| |
| <h3 id="meetups-and-talks">Meetups and Talks</h3> |
| |
| <p>Apache Flink was presented in the <a href="http://www.meetup.com/Netherlands-Hadoop-User-Group/events/218635152">Amsterdam Hadoop User Group</a></p> |
| |
| <h2 id="notable-code-contributions">Notable code contributions</h2> |
| |
| <p><strong>Note:</strong> Code contributions listed here may not be part of a release or even the current snapshot yet.</p> |
| |
| <h3 id="streaming-scala-apihttpsgithubcomapacheincubator-flinkpull275"><a href="https://github.com/apache/incubator-flink/pull/275">Streaming Scala API</a></h3> |
| |
| <p>The Flink Streaming Java API recently got its Scala counterpart. Once merged, Flink Streaming users can use both Scala and Java for their development. The Flink Streaming Scala API is built as a thin layer on top of the Java API, making sure that the APIs are kept easily in sync.</p> |
| |
| <h3 id="intermediate-datasetshttpsgithubcomapacheincubator-flinkpull254"><a href="https://github.com/apache/incubator-flink/pull/254">Intermediate datasets</a></h3> |
| |
| <p>This pull request introduces a major change in the Flink runtime. Currently, the Flink runtime is based on the notion of operators that exchange data through channels. With the PR, intermediate data sets that are produced by operators become first-class citizens in the runtime. While this does not have any user-facing impact yet, it lays the groundwork for a slew of future features such as blocking execution, fine-grained fault-tolerance, and more efficient data sharing between cluster and client.</p> |
| |
| <h3 id="configurable-execution-modehttpsgithubcomapacheincubator-flinkpull259"><a href="https://github.com/apache/incubator-flink/pull/259">Configurable execution mode</a></h3> |
| |
| <p>This pull request allows the user to change the object-reuse behaviour. Before this pull request, some operations would reuse objects passed to the user function while others would always create new objects. This introduces a system wide switch and changes all operators to either reuse objects or don’t reuse objects.</p> |
| |
| <h3 id="distributed-coordination-via-akkahttpsgithubcomapacheincubator-flinkpull149"><a href="https://github.com/apache/incubator-flink/pull/149">Distributed Coordination via Akka</a></h3> |
| |
| <p>Another major change is a complete rewrite of the JobManager / TaskManager components in Scala. In addition to that, the old RPC service was replaced by Actors, using the Akka framework.</p> |
| |
| <h3 id="sorting-of-very-large-recordshttpsgithubcomapacheincubator-flinkpull249-"><a href="https://github.com/apache/incubator-flink/pull/249">Sorting of very large records</a></h3> |
| |
| <p>Flink’s internal sort-algorithms were improved to better handle large records (multiple 100s of megabytes or larger). Previously, the system did in some cases hold instances of multiple large records, resulting in high memory consumption and JVM heap thrashing. Through this fix, large records are streamed through the operators, reducing the memory consumption and GC pressure. The system now requires much less memory to support algorithms that work on such large records.</p> |
| |
| <h3 id="kryo-serialization-as-the-new-default-fallbackhttpsgithubcomapacheincubator-flinkpull271"><a href="https://github.com/apache/incubator-flink/pull/271">Kryo Serialization as the new default fallback</a></h3> |
| |
| <p>Flink’s build-in type serialization framework is handles all common types very efficiently. Prior versions uses Avro to serialize types that the built-in framework could not handle. |
| Flink serialization system improved a lot over time and by now surpasses the capabilities of Avro in many cases. Kryo now serves as the default fallback serialization framework, supporting a much broader range of types.</p> |
| |
| <h3 id="hadoop-filesystem-supporthttpsgithubcomapacheincubator-flinkpull268"><a href="https://github.com/apache/incubator-flink/pull/268">Hadoop FileSystem support</a></h3> |
| |
| <p>This change permits users to use all file systems supported by Hadoop with Flink. In practice this means that users can use Flink with Tachyon, Google Cloud Storage (also out of the box Flink YARN support on Google Compute Cloud), FTP and all the other file system implementations for Hadoop.</p> |
| |
| <h2 id="heading-to-the-080-release">Heading to the 0.8.0 release</h2> |
| |
| <p>The community is working hard together with the Apache infra team to migrate the Flink infrastructure to a top-level project. At the same time, the Flink community is working on the Flink 0.8.0 release which should be out very soon.</p> |
| |
| </article> |
| </div> |
| |
| <div class="row"> |
| <div id="disqus_thread"></div> |
| <script type="text/javascript"> |
| /* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */ |
| var disqus_shortname = 'stratosphere-eu'; // required: replace example with your forum shortname |
| |
| /* * * DON'T EDIT BELOW THIS LINE * * */ |
| (function() { |
| var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true; |
| dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js'; |
| (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq); |
| })(); |
| </script> |
| </div> |
| </div> |
| </div> |
| </div> |
| </div> |
| |
| <hr /> |
| |
| <div class="row"> |
| <div class="footer text-center col-sm-12"> |
| <p>Copyright © 2014-2019 <a href="http://apache.org">The Apache Software Foundation</a>. All Rights Reserved.</p> |
| <p>Apache Flink, Flink®, Apache®, the squirrel logo, and the Apache feather logo are either registered trademarks or trademarks of The Apache Software Foundation.</p> |
| <p><a href="/privacy-policy.html">Privacy Policy</a> · <a href="/blog/feed.xml">RSS feed</a></p> |
| </div> |
| </div> |
| </div><!-- /.container --> |
| |
| <!-- Include all compiled plugins (below), or include individual files as needed --> |
| <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script> |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.matchHeight/0.7.0/jquery.matchHeight-min.js"></script> |
| <script src="/js/codetabs.js"></script> |
| <script src="/js/stickysidebar.js"></script> |
| |
| <!-- Google Analytics --> |
| <script> |
| (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ |
| (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), |
| m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) |
| })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); |
| |
| ga('create', 'UA-52545728-1', 'auto'); |
| ga('send', 'pageview'); |
| </script> |
| </body> |
| </html> |
