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README.html
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<!DOCTYPE html>
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<title>Intro to Spark Workshop</title>
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</head>
<body class="book">
<div id="header">
<h1>Intro to Spark Workshop</h1>
<div class="details">
<span id="author" class="author">Kon Soulianidis, Timothy Findlay, Ned Shawa, Mark Moloney</span><br>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_melbourne_apache_spark_hadoop_users_group_apr_20_2015">Melbourne Apache Spark + Hadoop Users Group - Apr 20 2015</h2>
<div class="sectionbody">
</div>
</div>
<h1 id="_about" class="sect0">About</h1>
<div class="openblock partintro">
<div class="content">
<div class="paragraph">
<p>The Goal of this workshop is to provide attendees with an introduction to
<a href="http://spark.apache.org">Apache Spark</a>.</p>
</div>
<div class="paragraph">
<p>We’ll cover</p>
</div>
<div class="olist arabic">
<ol class="arabic">
<li>
<p>Intro to Spark</p>
</li>
<li>
<p>Intro to the REPL and executing Spark commands</p>
</li>
<li>
<p>Intro to writing Spark Applications in your IDE</p>
</li>
</ol>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_about_this_project">About this project</h2>
<div class="sectionbody">
<div class="paragraph">
<p>We’ve prepared this project as the goto point for all resources needed for the workshop.</p>
</div>
<div class="paragraph">
<p>It is designed to run without an internet connection but we make no gurantees.</p>
</div>
<div class="paragraph">
<p>You can either use this project, cloned from Github, and run a task to
link:'Get what you need'[Get what you need] or you can grab a USB stick off one of the organisers
to copy everything to your hard-drive.</p>
</div>
<div class="paragraph">
<p>This project uses the <a href="http://gradle.org">Gradle</a> build tool. You don’t need to know Gradle or the
Groovy language in order to use Spark, however Gradle does allow for expressive declarative builds
that allow us to orchestrate what you need in order to get Spark up and running on your local
machine, in addition to being a useful tool for compiling, testing and deploying your Spark apps.</p>
</div>
<div class="paragraph">
<p>We’ve prepared this build file so that you can get to the Spark webpages, and supporting IDEs
quickly and that you can start the command line REPL in order for the workshop.</p>
</div>
<div class="paragraph">
<p>The intent here is that Gradle will download the required parts for you. It is platform agnostic
meaning the same build file will work on Mac, Linux & even Windows.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_requirements">Requirements</h2>
<div class="sectionbody">
<div class="paragraph">
<p>You need to install
<a href="http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html">Java 8</a> for
your platform.</p>
</div>
<div class="paragraph">
<p>Spark has a dependency on Scala, however the Gradle Build File will pull this down for you.</p>
</div>
<div class="paragraph">
<p>You’ll also need a Java IDE with some Scala plugins. There are Gradle tasks to open up the download
pages in your browser for both IntelliJ and Eclipse.</p>
</div>
<div class="sect2">
<h3 id="_ides">IDEs</h3>
<div class="paragraph">
<p>Both IDEs this workshop recommends are free:</p>
</div>
<div class="ulist">
<ul>
<li>
<p><em>IntelliJ Community Edition</em> is a free IDE for Java, Scala + a host of other languages. If you
haven’t used a Java IDE before its recommended you try this.</p>
</li>
<li>
<p><em>ScalaIDE</em> An Eclipse distribution with the Scala plugin already installed. Those used to Eclipse
can stay using it for their Spark endevours.</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>If you already have Eclipse or IDEA installed, you just need to get the Scala plugin. We’ve tested
with the latest versions available. If following on during the workshop it may be best to use one
of the IDEs provided.</p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_get_what_you_need">Get what you need</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_java">Java</h3>
<div class="paragraph">
<p>Install Java 8 from the link in the previous section. <strong>Note:</strong> One of the organisers will have a USB
stick with versions of Java for all the relevant platforms.</p>
</div>
</div>
<div class="sect2">
<h3 id="_gradle">Gradle</h3>
<div class="paragraph">
<p>At a command prompt type:</p>
</div>
<div class="paragraph">
<p><code>./gradlew tasks</code></p>
</div>
<div class="paragraph">
<p>This will download Gradle 2.3 if you don’t already have it and show you a list of tasks you’ll find
useful for this workshop. There is also some 'Documentation' tasks you with quick links to spark
home page, scala IDEs, etc.</p>
</div>
</div>
<div class="sect2">
<h3 id="_an_ide">An IDE</h3>
<div class="paragraph">
<p>If you don’t have an IDE installed, you can use Gradle to download one. Look for <strong>IDE Download Tasks</strong>
in the Gradle. For example</p>
</div>
<div class="paragraph">
<p><code>./gradlew downloadEclipseForMacOSXCocoa64bit</code></p>
</div>
<div class="paragraph">
<p>If using IntelliJ dont forget to get the Scala Plugin using</p>
</div>
<div class="paragraph">
<p><code>./gradlew downloadIdeaForSparkPlugin</code></p>
</div>
</div>
<div class="sect2">
<h3 id="_spark_data">Spark & Data</h3>
<div class="paragraph">
<p>The next step is to run</p>
</div>
<div class="paragraph">
<p><code>./gradlew prepareUsb</code></p>
</div>
<div class="paragraph">
<p>This will download the Spark distribution, and the Spark example data we are going to use in the workshop.</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
<div class="title">Locations</div>
<div class="paragraph">
<p>Spark, Gradle is downloaded to the <a href="tools">Tools</a> directory</p>
</div>
<div class="paragraph">
<p>Data is put in the <a href="data">Data</a> directory</p>
</div>
</td>
</tr>
</table>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_get_started">Get Started</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_starting_the_repl">Starting the REPL</h3>
<div class="paragraph">
<p>Go to <a href="tools/spark-1.3.1-bin-hadoop2.6/bin/spark-shell">spark-1.3.1-bin-hadoop2.6/bin/spark-shell</a> to start the Shell</p>
</div>
</div>
<div class="sect2">
<h3 id="_open_projects_in_your_ide">Open Projects in your IDE</h3>
<div class="sect3">
<h4 id="_eclipse">Eclipse</h4>
<div class="sect4">
<h5 id="_generate_eclipse_project">Generate Eclipse Project</h5>
<div class="paragraph">
<p>Run <code>./gradlew eclipse</code> to generate the Eclipse project files with the jar’s already preconfigured.</p>
</div>
<div class="paragraph">
<p>In Eclipse go to <span class="menuseq"><span class="menu">File</span> ▸ <span class="menuitem">Import Project…​</span></span> and select <em>Existing Projects</em> and click next.
Select this project directory where you should see the spark project and click finish.</p>
</div>
<div class="admonitionblock tip">
<table>
<tr>
<td class="icon">
<i class="fa icon-tip" title="Tip"></i>
</td>
<td class="content">
<div class="title">Optional Step to set correct Scala version</div>
<div class="paragraph">
<p>This Scala project works with Scala 2.10. ScalaIDE may default to Scala 2.11 though.</p>
</div>
<div class="paragraph">
<p>If you see an error in Eclipse that Scala version used doesnt match that of your libraries then
right click on the project and select menu:Properties…​</p>
</div>
<div class="paragraph">
<p>In the properties window that appears select <strong>Scala Compiler</strong> on the Left Hand pane, then check
<em>Use Project Settings</em>. The <em>Scala Installation</em> dropdown will be enabled allowing you to select
"Latest 2.10 bundle (dynamic)".</p>
</div>
<div class="paragraph">
<p>Whilst you are there, set your <code>target</code> as <code>jvm-1.8</code>. Hit OK</p>
</div>
</td>
</tr>
</table>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_intellij_idea">IntelliJ IDEA</h4>
<div class="sect4">
<h5 id="_install_the_idea_plugin">Install the IDEA plugin</h5>
<div class="sect5">
<h6 id="_from_this_usb">from this USB</h6>
<div class="paragraph">
<p>If you ran <code>gradlew downloadIdeaForSparkPlugin</code> (or got the USB) prior you will have the scala plugin
ready to go.</p>
</div>
<div class="olist arabic">
<ol class="arabic">
<li>
<p>Open IDEA preferences.</p>
</li>
<li>
<p>Press <b class="button">Install Plugin from disk</b></p>
</li>
<li>
<p>Select where the plugin was downloaded: <code>tools\ide\Idea\scalaPlugin\scala-intellij-bin-1.4.15.zip</code></p>
</li>
<li>
<p>Press <b class="button">Ok</b>.</p>
</li>
<li>
<p>Once the plugin is installed, you will be prompted to restart.</p>
</li>
<li>
<p>Restart IDEA</p>
</li>
</ol>
</div>
</div>
<div class="sect5">
<h6 id="_via_internet">via Internet</h6>
<div class="paragraph">
<p>If you have an internet connection you can download the plugin manually.</p>
</div>
<div class="olist arabic">
<ol class="arabic">
<li>
<p>Open IDEA preferences.</p>
</li>
<li>
<p>Press <b class="button">Install Jetbrains Plugin</b></p>
</li>
<li>
<p>Type Scala in the window that pops up</p>
</li>
<li>
<p>Right click the Scala listing and select 'Download and Install'</p>
</li>
<li>
<p>Press Ok on both the windows.</p>
</li>
<li>
<p>Once the plugin is installed, you will be prompted to restart.</p>
</li>
<li>
<p>Restart IDEA</p>
</li>
</ol>
</div>
</div>
</div>
<div class="sect4">
<h5 id="_open_the_project">Open the Project</h5>
<div class="paragraph">
<p>If you’ve got a project already open select <span class="menuseq"><span class="menu">File</span> ▸ <span class="menuitem">Open…​</span></span> and select the <code>build.gradle</code> file from this directory.
This will configure Scala for you.</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
You can also use <code>gradlew idea</code> to generate Idea project files (Idea v12 & 13)
</td>
</tr>
</table>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div id="footer">
<div id="footer-text">
Last updated 2015-04-20 03:20:41 AEST
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