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Posted to commits@zeppelin.apache.org by mi...@apache.org on 2016/08/16 07:51:02 UTC
svn commit: r1756487 [11/19] - in /zeppelin/site: ./ docs/0.6.1/
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--- zeppelin/site/docs/0.6.1/interpreter/flink.html (added)
+++ zeppelin/site/docs/0.6.1/interpreter/flink.html Tue Aug 16 07:50:58 2016
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+
+<!DOCTYPE html>
+<html lang="en">
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+ <meta charset="utf-8">
+ <title>Flink Interpreter</title>
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+ <li class="title"><span><b>Available Interpreters</b><span></li>
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+ <li><a href="/docs/0.6.1/interpreter/cassandra.html">Cassandra</a></li>
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+ <li><a href="/docs/0.6.1/storage/storage.html#notebook-storage-in-local-git-repository">Git Storage</a></li>
+ <li><a href="/docs/0.6.1/storage/storage.html#notebook-storage-in-s3">S3 Storage</a></li>
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+ <li class="title"><span><b>REST API</b><span></li>
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+ <li class="title"><span><b>Security</b><span></li>
+ <li><a href="/docs/0.6.1/security/authentication.html">Authentication for NGINX</a></li>
+ <li><a href="/docs/0.6.1/security/shiroauthentication.html">Shiro Authentication</a></li>
+ <li><a href="/docs/0.6.1/security/notebook_authorization.html">Notebook Authorization</a></li>
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+ <li role="separator" class="divider"></li>
+ <li class="title"><span><b>Contibute</b><span></li>
+ <li><a href="/docs/0.6.1/development/writingzeppelininterpreter.html">Writing Zeppelin Interpreter</a></li>
+ <li><a href="/docs/0.6.1/development/howtocontribute.html">How to contribute (code)</a></li>
+ <li><a href="/docs/0.6.1/development/howtocontributewebsite.html">How to contribute (website)</a></li>
+ </ul>
+ </li>
+ </ul>
+ </nav><!--/.navbar-collapse -->
+ </div>
+ </div>
+
+
+
+ <div class="content">
+
+<!--<div class="hero-unit Flink Interpreter">
+ <h1></h1>
+</div>
+-->
+
+<div class="row">
+ <div class="col-md-12">
+ <h1>Flink interpreter for Apache Zeppelin</h1>
+
+<div id="toc"></div>
+
+<h2>Overview</h2>
+
+<p><a href="https://flink.apache.org">Apache Flink</a> is an open source platform for distributed stream and batch data processing. Flink’s core is a streaming dataflow engine that provides data distribution, communication, and fault tolerance for distributed computations over data streams. Flink also builds batch processing on top of the streaming engine, overlaying native iteration support, managed memory, and program optimization.</p>
+
+<h2>How to start local Flink cluster, to test the interpreter</h2>
+
+<p>Zeppelin comes with pre-configured flink-local interpreter, which starts Flink in a local mode on your machine, so you do not need to install anything.</p>
+
+<h2>How to configure interpreter to point to Flink cluster</h2>
+
+<p>At the "Interpreters" menu, you have to create a new Flink interpreter and provide next properties:</p>
+
+<table class="table-configuration">
+ <tr>
+ <th>property</th>
+ <th>value</th>
+ <th>Description</th>
+ </tr>
+ <tr>
+ <td>host</td>
+ <td>local</td>
+ <td>host name of running JobManager. 'local' runs flink in local mode (default)</td>
+ </tr>
+ <tr>
+ <td>port</td>
+ <td>6123</td>
+ <td>port of running JobManager</td>
+ </tr>
+</table>
+
+<p>For more information about Flink configuration, you can find it <a href="https://ci.apache.org/projects/flink/flink-docs-release-1.0/setup/config.html">here</a>.</p>
+
+<h2>How to test it's working</h2>
+
+<p>In example, by using the <a href="https://www.zeppelinhub.com/viewer/notebooks/aHR0cHM6Ly9yYXcuZ2l0aHVidXNlcmNvbnRlbnQuY29tL05GTGFicy96ZXBwZWxpbi1ub3RlYm9va3MvbWFzdGVyL25vdGVib29rcy8yQVFFREs1UEMvbm90ZS5qc29u">Zeppelin notebook</a> is from Till Rohrmann's presentation <a href="http://www.slideshare.net/tillrohrmann/data-analysis-49806564">Interactive data analysis with Apache Flink</a> for Apache Flink Meetup.</p>
+<div class="highlight"><pre><code class="text language-text" data-lang="text">%sh
+rm 10.txt.utf-8
+wget http://www.gutenberg.org/ebooks/10.txt.utf-8
+</code></pre></div>
+<div class="highlight"><pre><code class="scala"><span class="o">%</span><span class="n">flink</span>
+<span class="k">case</span> <span class="k">class</span> <span class="nc">WordCount</span><span class="o">(</span><span class="n">word</span><span class="k">:</span> <span class="kt">String</span><span class="o">,</span> <span class="n">frequency</span><span class="k">:</span> <span class="kt">Int</span><span class="o">)</span>
+<span class="k">val</span> <span class="n">bible</span><span class="k">:</span><span class="kt">DataSet</span><span class="o">[</span><span class="kt">String</span><span class="o">]</span> <span class="k">=</span> <span class="n">env</span><span class="o">.</span><span class="n">readTextFile</span><span class="o">(</span><span class="s">"10.txt.utf-8"</span><span class="o">)</span>
+<span class="k">val</span> <span class="n">partialCounts</span><span class="k">:</span> <span class="kt">DataSet</span><span class="o">[</span><span class="kt">WordCount</span><span class="o">]</span> <span class="k">=</span> <span class="n">bible</span><span class="o">.</span><span class="n">flatMap</span><span class="o">{</span>
+ <span class="n">line</span> <span class="k">=></span>
+ <span class="s">"""\b\w+\b"""</span><span class="o">.</span><span class="n">r</span><span class="o">.</span><span class="n">findAllIn</span><span class="o">(</span><span class="n">line</span><span class="o">).</span><span class="n">map</span><span class="o">(</span><span class="n">word</span> <span class="k">=></span> <span class="nc">WordCount</span><span class="o">(</span><span class="n">word</span><span class="o">,</span> <span class="mi">1</span><span class="o">))</span>
+<span class="c1">// line.split(" ").map(word => WordCount(word, 1))</span>
+<span class="o">}</span>
+<span class="k">val</span> <span class="n">wordCounts</span> <span class="k">=</span> <span class="n">partialCounts</span><span class="o">.</span><span class="n">groupBy</span><span class="o">(</span><span class="s">"word"</span><span class="o">).</span><span class="n">reduce</span><span class="o">{</span>
+ <span class="o">(</span><span class="n">left</span><span class="o">,</span> <span class="n">right</span><span class="o">)</span> <span class="k">=></span> <span class="nc">WordCount</span><span class="o">(</span><span class="n">left</span><span class="o">.</span><span class="n">word</span><span class="o">,</span> <span class="n">left</span><span class="o">.</span><span class="n">frequency</span> <span class="o">+</span> <span class="n">right</span><span class="o">.</span><span class="n">frequency</span><span class="o">)</span>
+<span class="o">}</span>
+<span class="k">val</span> <span class="n">result10</span> <span class="k">=</span> <span class="n">wordCounts</span><span class="o">.</span><span class="n">first</span><span class="o">(</span><span class="mi">10</span><span class="o">).</span><span class="n">collect</span><span class="o">()</span>
+</code></pre></div>
+
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Added: zeppelin/site/docs/0.6.1/interpreter/geode.html
URL: http://svn.apache.org/viewvc/zeppelin/site/docs/0.6.1/interpreter/geode.html?rev=1756487&view=auto
==============================================================================
--- zeppelin/site/docs/0.6.1/interpreter/geode.html (added)
+++ zeppelin/site/docs/0.6.1/interpreter/geode.html Tue Aug 16 07:50:58 2016
@@ -0,0 +1,374 @@
+
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+ <title>Geode OQL Interpreter</title>
+ <meta name="description" content="">
+ <meta name="author" content="The Apache Software Foundation">
+
+ <!-- Enable responsive viewport -->
+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
+
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+ <!--[if lt IE 9]>
+ <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
+ <![endif]-->
+
+ <link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
+
+ <!-- Le styles -->
+ <link href="/docs/0.6.1/assets/themes/zeppelin/bootstrap/css/bootstrap.css" rel="stylesheet">
+ <link href="/docs/0.6.1/assets/themes/zeppelin/css/style.css?body=1" rel="stylesheet" type="text/css">
+ <link href="/docs/0.6.1/assets/themes/zeppelin/css/syntax.css" rel="stylesheet" type="text/css" media="screen" />
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+ <!-- Update these with your own images
+ <link rel="shortcut icon" href="images/favicon.ico">
+ <link rel="apple-touch-icon" href="images/apple-touch-icon.png">
+ <link rel="apple-touch-icon" sizes="72x72" href="images/apple-touch-icon-72x72.png">
+ <link rel="apple-touch-icon" sizes="114x114" href="images/apple-touch-icon-114x114.png">
+ -->
+
+ <!-- Js -->
+ <script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
+ <script src="/docs/0.6.1/assets/themes/zeppelin/bootstrap/js/bootstrap.min.js"></script>
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+
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+ <h1></h1>
+</div>
+-->
+
+<div class="row">
+ <div class="col-md-12">
+ <h1>Geode/Gemfire OQL Interpreter for Apache Zeppelin</h1>
+
+<div id="toc"></div>
+
+<h2>Overview</h2>
+
+<table class="table-configuration">
+ <tr>
+ <th>Name</th>
+ <th>Class</th>
+ <th>Description</th>
+ </tr>
+ <tr>
+ <td>%geode.oql</td>
+ <td>GeodeOqlInterpreter</td>
+ <td>Provides OQL environment for Apache Geode</td>
+ </tr>
+</table>
+
+<p>This interpreter supports the <a href="http://geode.incubator.apache.org/">Geode</a> <a href="http://geode-docs.cfapps.io/docs/developing/querying_basics/oql_compared_to_sql.html">Object Query Language (OQL)</a>. With the OQL-based querying language:</p>
+
+<p><a href="https://www.youtube.com/watch?v=zvzzA9GXu3Q"><img align="right" src="http://img.youtube.com/vi/zvzzA9GXu3Q/3.jpg" alt="zeppelin-view" hspace="10" width="200"></img></a></p>
+
+<ul>
+<li>You can query on any arbitrary object</li>
+<li>You can navigate object collections</li>
+<li>You can invoke methods and access the behavior of objects</li>
+<li>Data mapping is supported</li>
+<li>You are not required to declare types. Since you do not need type definitions, you can work across multiple languages</li>
+<li>You are not constrained by a schema</li>
+</ul>
+
+<p>This <a href="https://www.youtube.com/watch?v=zvzzA9GXu3Q">Video Tutorial</a> illustrates some of the features provided by the <code>Geode Interpreter</code>.</p>
+
+<h2>Create Interpreter</h2>
+
+<p>By default Zeppelin creates one <code>Geode/OQL</code> instance. You can remove it or create more instances.</p>
+
+<p>Multiple Geode instances can be created, each configured to the same or different backend Geode cluster. But over time a <code>Notebook</code> can have only one Geode interpreter instance <code>bound</code>. That means you <em>cannot</em> connect to different Geode clusters in the same <code>Notebook</code>. This is a known Zeppelin limitation.</p>
+
+<p>To create new Geode instance open the <code>Interpreter</code> section and click the <code>+Create</code> button. Pick a <code>Name</code> of your choice and from the <code>Interpreter</code> drop-down select <code>geode</code>. Then follow the configuration instructions and <code>Save</code> the new instance.</p>
+
+<blockquote>
+<p>Note: The <code>Name</code> of the instance is used only to distinguish the instances while binding them to the <code>Notebook</code>. The <code>Name</code> is irrelevant inside the <code>Notebook</code>. In the <code>Notebook</code> you must use <code>%geode.oql</code> tag.</p>
+</blockquote>
+
+<h2>Bind to Notebook</h2>
+
+<p>In the <code>Notebook</code> click on the <code>settings</code> icon in the top right corner. The select/deselect the interpreters to be bound with the <code>Notebook</code>.</p>
+
+<h2>Configuration</h2>
+
+<p>You can modify the configuration of the Geode from the <code>Interpreter</code> section. The Geode interpreter expresses the following properties:</p>
+
+<table class="table-configuration">
+ <tr>
+ <th>Property Name</th>
+ <th>Description</th>
+ <th>Default Value</th>
+ </tr>
+ <tr>
+ <td>geode.locator.host</td>
+ <td>The Geode Locator Host</td>
+ <td>localhost</td>
+ </tr>
+ <tr>
+ <td>geode.locator.port</td>
+ <td>The Geode Locator Port</td>
+ <td>10334</td>
+ </tr>
+ <tr>
+ <td>geode.max.result</td>
+ <td>Max number of OQL result to display to prevent the browser overload</td>
+ <td>1000</td>
+ </tr>
+</table>
+
+<h2>How to use</h2>
+
+<blockquote>
+<p><em>Tip 1: Use (CTRL + .) for OQL auto-completion.</em></p>
+
+<p><em>Tip 2: Always start the paragraphs with the full <code>%geode.oql</code> prefix tag! The short notation: <code>%geode</code> would still be able run the OQL queries but the syntax highlighting and the auto-completions will be disabled.</em></p>
+</blockquote>
+
+<h3>Create / Destroy Regions</h3>
+
+<p>The OQL specification does not support <a href="https://cwiki.apache.org/confluence/display/GEODE/Index#Index-MainConceptsandComponents">Geode Regions</a> mutation operations. To <code>create</code>/<code>destroy</code> regions one should use the <a href="http://geode-docs.cfapps.io/docs/tools_modules/gfsh/chapter_overview.html">GFSH</a> shell tool instead. In the following it is assumed that the GFSH is colocated with Zeppelin server.</p>
+<div class="highlight"><pre><code class="bash language-bash" data-lang="bash">%sh
+<span class="nb">source</span> /etc/geode/conf/geode-env.sh
+gfsh <span class="s"><< EOF</span>
+
+<span class="s"> connect --locator=ambari.localdomain[10334]</span>
+
+<span class="s"> destroy region --name=/regionEmployee</span>
+<span class="s"> destroy region --name=/regionCompany</span>
+<span class="s"> create region --name=regionEmployee --type=REPLICATE</span>
+<span class="s"> create region --name=regionCompany --type=REPLICATE</span>
+
+<span class="s"> exit;</span>
+<span class="s">EOF</span>
+</code></pre></div>
+<p>Above snippet re-creates two regions: <code>regionEmployee</code> and <code>regionCompany</code>. Note that you have to explicitly specify the locator host and port. The values should match those you have used in the Geode Interpreter configuration. Comprehensive list of <a href="http://geode-docs.cfapps.io/docs/tools_modules/gfsh/gfsh_quick_reference.html">GFSH Commands by Functional Area</a>.</p>
+
+<h3>Basic OQL</h3>
+<div class="highlight"><pre><code class="sql language-sql" data-lang="sql"><span class="o">%</span><span class="n">geode</span><span class="p">.</span><span class="n">oql</span>
+<span class="k">SELECT</span> <span class="k">count</span><span class="p">(</span><span class="o">*</span><span class="p">)</span> <span class="k">FROM</span> <span class="o">/</span><span class="n">regionEmployee</span>
+</code></pre></div>
+<p>OQL <code>IN</code> and <code>SET</code> filters:</p>
+<div class="highlight"><pre><code class="sql language-sql" data-lang="sql"><span class="o">%</span><span class="n">geode</span><span class="p">.</span><span class="n">oql</span>
+<span class="k">SELECT</span> <span class="o">*</span> <span class="k">FROM</span> <span class="o">/</span><span class="n">regionEmployee</span>
+<span class="k">WHERE</span> <span class="n">companyId</span> <span class="k">IN</span> <span class="k">SET</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> <span class="k">OR</span> <span class="n">lastName</span> <span class="k">IN</span> <span class="k">SET</span><span class="p">(</span><span class="s1">'Tzolov13'</span><span class="p">,</span> <span class="s1">'Tzolov73'</span><span class="p">)</span>
+</code></pre></div>
+<p>OQL <code>JOIN</code> operations</p>
+<div class="highlight"><pre><code class="sql language-sql" data-lang="sql"><span class="o">%</span><span class="n">geode</span><span class="p">.</span><span class="n">oql</span>
+<span class="k">SELECT</span> <span class="n">e</span><span class="p">.</span><span class="n">employeeId</span><span class="p">,</span> <span class="n">e</span><span class="p">.</span><span class="n">firstName</span><span class="p">,</span> <span class="n">e</span><span class="p">.</span><span class="n">lastName</span><span class="p">,</span> <span class="k">c</span><span class="p">.</span><span class="n">id</span> <span class="k">as</span> <span class="n">companyId</span><span class="p">,</span> <span class="k">c</span><span class="p">.</span><span class="n">companyName</span><span class="p">,</span> <span class="k">c</span><span class="p">.</span><span class="n">address</span>
+<span class="k">FROM</span> <span class="o">/</span><span class="n">regionEmployee</span> <span class="n">e</span><span class="p">,</span> <span class="o">/</span><span class="n">regionCompany</span> <span class="k">c</span>
+<span class="k">WHERE</span> <span class="n">e</span><span class="p">.</span><span class="n">companyId</span> <span class="o">=</span> <span class="k">c</span><span class="p">.</span><span class="n">id</span>
+</code></pre></div>
+<p>By default the QOL responses contain only the region entry values. To access the keys, query the <code>EntrySet</code> instead:</p>
+<div class="highlight"><pre><code class="sql language-sql" data-lang="sql"><span class="o">%</span><span class="n">geode</span><span class="p">.</span><span class="n">oql</span>
+<span class="k">SELECT</span> <span class="n">e</span><span class="p">.</span><span class="k">key</span><span class="p">,</span> <span class="n">e</span><span class="p">.</span><span class="n">value</span><span class="p">.</span><span class="n">companyId</span><span class="p">,</span> <span class="n">e</span><span class="p">.</span><span class="n">value</span><span class="p">.</span><span class="n">email</span>
+<span class="k">FROM</span> <span class="o">/</span><span class="n">regionEmployee</span><span class="p">.</span><span class="n">entrySet</span> <span class="n">e</span>
+</code></pre></div>
+<p>Following query will return the EntrySet value as a Blob:</p>
+<div class="highlight"><pre><code class="sql language-sql" data-lang="sql"><span class="o">%</span><span class="n">geode</span><span class="p">.</span><span class="n">oql</span>
+<span class="k">SELECT</span> <span class="n">e</span><span class="p">.</span><span class="k">key</span><span class="p">,</span> <span class="n">e</span><span class="p">.</span><span class="n">value</span> <span class="k">FROM</span> <span class="o">/</span><span class="n">regionEmployee</span><span class="p">.</span><span class="n">entrySet</span> <span class="n">e</span>
+</code></pre></div>
+<blockquote>
+<p>Note: You can have multiple queries in the same paragraph but only the result from the first is displayed. [<a href="https://issues.apache.org/jira/browse/ZEPPELIN-178">1</a>], [<a href="https://issues.apache.org/jira/browse/ZEPPELIN-212">2</a>].</p>
+</blockquote>
+
+<h3>GFSH Commands From The Shell</h3>
+
+<p>Use the Shell Interpreter (<code>%sh</code>) to run OQL commands form the command line:</p>
+<div class="highlight"><pre><code class="bash language-bash" data-lang="bash">%sh
+<span class="nb">source</span> /etc/geode/conf/geode-env.sh
+gfsh -e <span class="s2">"connect"</span> -e <span class="s2">"list members"</span>
+</code></pre></div>
+<h3>Apply Zeppelin Dynamic Forms</h3>
+
+<p>You can leverage <a href="../manual/dynamicform.html">Zeppelin Dynamic Form</a> inside your OQL queries. You can use both the <code>text input</code> and <code>select form</code> parameterization features</p>
+<div class="highlight"><pre><code class="sql language-sql" data-lang="sql"><span class="o">%</span><span class="n">geode</span><span class="p">.</span><span class="n">oql</span>
+<span class="k">SELECT</span> <span class="o">*</span> <span class="k">FROM</span> <span class="o">/</span><span class="n">regionEmployee</span> <span class="n">e</span> <span class="k">WHERE</span> <span class="n">e</span><span class="p">.</span><span class="n">employeeId</span> <span class="o">></span> <span class="err">${</span><span class="n">Id</span><span class="err">}</span>
+</code></pre></div>
+<h3>Auto-completion</h3>
+
+<p>The Geode Interpreter provides a basic auto-completion functionality. On <code>(Ctrl+.)</code> it list the most relevant suggestions in a pop-up window.</p>
+
+<h2>Geode REST API</h2>
+
+<p>To list the defined regions you can use the <a href="http://geode-docs.cfapps.io/docs/geode_rest/chapter_overview.html">Geode REST API</a>:</p>
+<div class="highlight"><pre><code class="text language-text" data-lang="text">http://<geode server hostname>phd1.localdomain:8484/gemfire-api/v1/
+</code></pre></div><div class="highlight"><pre><code class="json language-json" data-lang="json"><span class="p">{</span>
+ <span class="nt">"regions"</span> <span class="p">:</span> <span class="p">[{</span>
+ <span class="nt">"name"</span> <span class="p">:</span> <span class="s2">"regionEmployee"</span><span class="p">,</span>
+ <span class="nt">"type"</span> <span class="p">:</span> <span class="s2">"REPLICATE"</span><span class="p">,</span>
+ <span class="nt">"key-constraint"</span> <span class="p">:</span> <span class="kc">null</span><span class="p">,</span>
+ <span class="nt">"value-constraint"</span> <span class="p">:</span> <span class="kc">null</span>
+ <span class="p">},</span> <span class="p">{</span>
+ <span class="nt">"name"</span> <span class="p">:</span> <span class="s2">"regionCompany"</span><span class="p">,</span>
+ <span class="nt">"type"</span> <span class="p">:</span> <span class="s2">"REPLICATE"</span><span class="p">,</span>
+ <span class="nt">"key-constraint"</span> <span class="p">:</span> <span class="kc">null</span><span class="p">,</span>
+ <span class="nt">"value-constraint"</span> <span class="p">:</span> <span class="kc">null</span>
+ <span class="p">}]</span>
+<span class="p">}</span>
+</code></pre></div>
+<blockquote>
+<p>To enable Geode REST API with JSON support add the following properties to geode.server.properties.file and restart:</p>
+</blockquote>
+<div class="highlight"><pre><code class="text language-text" data-lang="text">http-service-port=8484
+start-dev-rest-api=true
+</code></pre></div>
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+
+
+
+ <div class="content">
+
+<!--<div class="hero-unit HBase Shell Interpreter">
+ <h1></h1>
+</div>
+-->
+
+<div class="row">
+ <div class="col-md-12">
+ <h1>HBase Shell Interpreter for Apache Zeppelin</h1>
+
+<div id="toc"></div>
+
+<h2>Overview</h2>
+
+<p><a href="http://hbase.apache.org/book.html#shell">HBase Shell</a> is a JRuby IRB client for Apache HBase. This interpreter provides all capabilities of Apache HBase shell within Apache Zeppelin. The interpreter assumes that Apache HBase client software has been installed and it can connect to the Apache HBase cluster from the machine on where Apache Zeppelin is installed.<br>
+To get start with HBase, please see <a href="https://hbase.apache.org/book.html#quickstart">HBase Quickstart</a>.</p>
+
+<h2>HBase release supported</h2>
+
+<p>By default, Zeppelin is built against HBase 1.0.x releases. To work with HBase 1.1.x releases, use the following build command:</p>
+<div class="highlight"><pre><code class="bash language-bash" data-lang="bash"><span class="c"># HBase 1.1.4</span>
+mvn clean package -DskipTests -Phadoop-2.6 -Dhadoop.version<span class="o">=</span>2.6.0 -P build-distr -Dhbase.hbase.version<span class="o">=</span>1.1.4 -Dhbase.hadoop.version<span class="o">=</span>2.6.0
+</code></pre></div>
+<p>To work with HBase 1.2.0+, use the following build command:</p>
+<div class="highlight"><pre><code class="bash language-bash" data-lang="bash"><span class="c"># HBase 1.2.0</span>
+mvn clean package -DskipTests -Phadoop-2.6 -Dhadoop.version<span class="o">=</span>2.6.0 -P build-distr -Dhbase.hbase.version<span class="o">=</span>1.2.0 -Dhbase.hadoop.version<span class="o">=</span>2.6.0
+</code></pre></div>
+<h2>Configuration</h2>
+
+<table class="table-configuration">
+ <tr>
+ <th>Property</th>
+ <th>Default</th>
+ <th>Description</th>
+ </tr>
+ <tr>
+ <td>hbase.home</td>
+ <td>/usr/lib/hbase</td>
+ <td>Installation directory of HBase, defaults to HBASE_HOME in environment</td>
+ </tr>
+ <tr>
+ <td>hbase.ruby.sources</td>
+ <td>lib/ruby</td>
+ <td>Path to Ruby scripts relative to 'hbase.home'</td>
+ </tr>
+ <tr>
+ <td>zeppelin.hbase.test.mode</td>
+ <td>false</td>
+ <td>Disable checks for unit and manual tests</td>
+ </tr>
+</table>
+
+<p>If you want to connect to HBase running on a cluster, you'll need to follow the next step.</p>
+
+<h3>Export HBASE_HOME</h3>
+
+<p>In <strong>conf/zeppelin-env.sh</strong>, export <code>HBASE_HOME</code> environment variable with your HBase installation path. This ensures <code>hbase-site.xml</code> can be loaded.</p>
+
+<p>for example</p>
+<div class="highlight"><pre><code class="bash language-bash" data-lang="bash"><span class="nb">export </span><span class="nv">HBASE_HOME</span><span class="o">=</span>/usr/lib/hbase
+</code></pre></div>
+<p>or, when running with CDH</p>
+<div class="highlight"><pre><code class="bash language-bash" data-lang="bash"><span class="nb">export </span><span class="nv">HBASE_HOME</span><span class="o">=</span><span class="s2">"/opt/cloudera/parcels/CDH/lib/hbase"</span>
+</code></pre></div>
+<p>You can optionally export <code>HBASE_CONF_DIR</code> instead of <code>HBASE_HOME</code> should you have custom HBase configurations.</p>
+
+<h2>Enabling the HBase Shell Interpreter</h2>
+
+<p>In a notebook, to enable the <strong>HBase Shell</strong> interpreter, click the <strong>Gear</strong> icon and select <strong>HBase Shell</strong>.</p>
+
+<h2>Using the HBase Shell Interpreter</h2>
+
+<p>In a paragraph, use <code>%hbase</code> to select the <strong>HBase Shell</strong> interpreter and then input all commands. To get the list of available commands, use <code>help</code>.</p>
+<div class="highlight"><pre><code class="bash language-bash" data-lang="bash">%hbase
+<span class="nb">help</span>
+</code></pre></div>
+<p>For example, to create a table</p>
+<div class="highlight"><pre><code class="bash language-bash" data-lang="bash">%hbase
+create <span class="s1">'test'</span>, <span class="s1">'cf'</span>
+</code></pre></div>
+<p>And then to put data into that table</p>
+<div class="highlight"><pre><code class="bash language-bash" data-lang="bash">%hbase
+put <span class="s1">'test'</span>, <span class="s1">'row1'</span>, <span class="s1">'cf:a'</span>, <span class="s1">'value1'</span>
+</code></pre></div>
+<p>For more information on all commands available, refer to <a href="https://learnhbase.wordpress.com/2013/03/02/hbase-shell-commands/">HBase shell commands</a>.</p>
+
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+
+<!DOCTYPE html>
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+<!--<div class="hero-unit HDFS File System Interpreter">
+ <h1></h1>
+</div>
+-->
+
+<div class="row">
+ <div class="col-md-12">
+ <h1>HDFS File System Interpreter for Apache Zeppelin</h1>
+
+<div id="toc"></div>
+
+<h2>Overview</h2>
+
+<p><a href="http://hadoop.apache.org/">Hadoop File System</a> is a distributed, fault tolerant file system part of the hadoop project and is often used as storage for distributed processing engines like <a href="http://hadoop.apache.org/">Hadoop MapReduce</a> and <a href="http://spark.apache.org/">Apache Spark</a> or underlying file systems like <a href="http://www.alluxio.org/">Alluxio</a>.</p>
+
+<h2>Configuration</h2>
+
+<table class="table-configuration">
+ <tr>
+ <th>Property</th>
+ <th>Default</th>
+ <th>Description</th>
+ </tr>
+ <tr>
+ <td>hdfs.url</td>
+ <td>http://localhost:50070/webhdfs/v1/</td>
+ <td>The URL for WebHDFS</td>
+ </tr>
+ <tr>
+ <td>hdfs.user</td>
+ <td>hdfs</td>
+ <td>The WebHDFS user</td>
+ </tr>
+ <tr>
+ <td>hdfs.maxlength</td>
+ <td>1000</td>
+ <td>Maximum number of lines of results fetched</td>
+ </tr>
+</table>
+
+<p><br/>
+This interpreter connects to HDFS using the HTTP WebHDFS interface.
+It supports the basic shell file commands applied to HDFS, it currently only supports browsing.</p>
+
+<ul>
+<li>You can use <i>ls [PATH]</i> and <i>ls -l [PATH]</i> to list a directory. If the path is missing, then the current directory is listed. <i>ls </i> supports a <i>-h</i> flag for human readable file sizes.</li>
+<li>You can use <i>cd [PATH]</i> to change your current directory by giving a relative or an absolute path.</li>
+<li>You can invoke <i>pwd</i> to see your current directory.</li>
+</ul>
+
+<blockquote>
+<p><strong>Tip :</strong> Use ( Ctrl + . ) for autocompletion.</p>
+</blockquote>
+
+<h2>Create Interpreter</h2>
+
+<p>In a notebook, to enable the <strong>HDFS</strong> interpreter, click the <strong>Gear</strong> icon and select <strong>HDFS</strong>.</p>
+
+<h2>WebHDFS REST API</h2>
+
+<p>You can confirm that you're able to access the WebHDFS API by running a curl command against the WebHDFS end point provided to the interpreter.</p>
+
+<p>Here is an example:</p>
+<div class="highlight"><pre><code class="bash language-bash" data-lang="bash"><span class="nv">$></span> curl <span class="s2">"http://localhost:50070/webhdfs/v1/?op=LISTSTATUS"</span>
+</code></pre></div>
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