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Spark Release 0.7.2 | Apache Spark
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<h2>Spark Release 0.7.2</h2>
<p>Spark 0.7.2 is a maintenance release that contains multiple bug fixes and improvements. You can download it as a <a href="http://spark-project.org/download-spark-0.7.2-sources">source package</a> (4 MB tar.gz) or get prebuilt packages for <a href="http://spark-project.org/download-spark-0.7.2-prebuilt-hadoop1">Hadoop 1 / CDH3</a> or <a href="http://spark-project.org/download-spark-0.7.2-prebuilt-cdh4">CDH 4</a> (61 MB tar.gz).</p>
<p>We recommend that all users update to this maintenance release.</p>
<p>The fixes and improvements in this version include:</p>
<ul>
<li>Scala version updated to 2.9.3.</li>
<li>Several improvements to Bagel, including performance fixes and a configurable storage level.</li>
<li>New API methods: subtractByKey, foldByKey, mapWith, filterWith, foreachPartition, and others.</li>
<li>A new metrics reporting interface, SparkListener, to collect information about each computation stage: task lengths, bytes shuffled, etc.</li>
<li>Several new examples using the Java API, including K-means and computing pi.</li>
<li>Support for launching multiple worker instances per host in the standalone mode.</li>
<li>Various bug fixes across the board.</li>
</ul>
<p>The following people contributed to this release:</p>
<ul>
<li>Jey Kottalam (Maven build, bug fixes, EC2 scripts, packaging the release)</li>
<li>Andrew Ash (bug fixes, docs)</li>
<li>Andrey Kouznetsov (bug fixes)</li>
<li>Andy Konwinski (docs)</li>
<li>Charles Reiss (bug fixes)</li>
<li>Christoph Grothaus (bug fixes)</li>
<li>Erik van Oosten (bug fixes)</li>
<li>Giovanni Delussu (bug fixes)</li>
<li>Hiral Patel (bug fixes)</li>
<li>Holden Karau (error reporting, EC2 scripts)</li>
<li>Imran Rashid (metrics reporting system)</li>
<li>Josh Rosen (EC2 scripts)</li>
<li>Mark Hamstra (new API methods, tests)</li>
<li>Mikhail Bautin (build)</li>
<li>Mosharaf Chowdhury (bug fixes)</li>
<li>Nick Pentreath (Bagel, examples)</li>
<li>Patrick Wendell (bug fixes)</li>
<li>Reynold Xin (bug fixes)</li>
<li>Stephen Haberman (bug fixes, tests, subtractByKey)</li>
<li>Kalpit Shah (build, multiple workers per host)</li>
<li>Mike Potts (run scripts)</li>
<li>Matei Zaharia (Bagel, bug fixes, build)</li>
</ul>
<p>We thank everyone who helped with this release, and hope to see more contributions from you in the future!</p>
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