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@@ -0,0 +1,530 @@
+
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+ <title>Apache Zeppelin 0.8.0 Documentation: Writing a New
Interpreter</title>
+ <meta name="description" content="Apache Zeppelin Interpreter is a
language backend. Every Interpreters belongs to an InterpreterGroup.
Interpreters in the same InterpreterGroup can reference each other.">
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+ <li class="title"><span>Notebook Storage</span></li>
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href="/docs/0.8.0/setup/storage/storage.html#notebook-storage-in-local-git-repository">Git
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Storage</a></li>
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Storage</a></li>
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Storage</a></li>
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+ <li class="title"><span>Operation</span></li>
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href="/docs/0.8.0/setup/operation/configuration.html">Configuration</a></li>
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+ <li><a
href="/docs/0.8.0/setup/operation/trouble_shooting.html">Trouble
Shooting</a></li>
+ </ul>
+ </li>
+
+ <li>
+ <a href="#" data-toggle="dropdown"
class="dropdown-toggle">Interpreter <b class="caret"></b></a>
+ <ul class="dropdown-menu scrollable-menu">
+ <li class="title"><span>Interpreters</span></li>
+ <li><a
href="/docs/0.8.0/usage/interpreter/overview.html">Overview</a></li>
+ <li role="separator" class="divider"></li>
+ <li><a href="/docs/0.8.0/interpreter/spark.html">Spark</a></li>
+ <li><a href="/docs/0.8.0/interpreter/jdbc.html">JDBC</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/python.html">Python</a></li>
+ <li role="separator" class="divider"></li>
+ <li><a
href="/docs/0.8.0/interpreter/alluxio.html">Alluxio</a></li>
+ <li><a href="/docs/0.8.0/interpreter/beam.html">Beam</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/bigquery.html">BigQuery</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/cassandra.html">Cassandra</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/elasticsearch.html">Elasticsearch</a></li>
+ <li><a href="/docs/0.8.0/interpreter/flink.html">Flink</a></li>
+ <li><a href="/docs/0.8.0/interpreter/geode.html">Geode</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/groovy.html">Groovy</a></li>
+ <li><a href="/docs/0.8.0/interpreter/hbase.html">HBase</a></li>
+ <li><a href="/docs/0.8.0/interpreter/hdfs.html">HDFS</a></li>
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+ <li><a
href="/docs/0.8.0/interpreter/ignite.html">Ignite</a></li>
+ <li><a href="/docs/0.8.0/interpreter/kylin.html">Kylin</a></li>
+ <li><a href="/docs/0.8.0/interpreter/lens.html">Lens</a></li>
+ <li><a href="/docs/0.8.0/interpreter/livy.html">Livy</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/markdown.html">Markdown</a></li>
+ <li><a href="/docs/0.8.0/interpreter/neo4j.html">Neo4j</a></li>
+ <li><a href="/docs/0.8.0/interpreter/pig.html">Pig</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/postgresql.html">Postgresql, HAWQ</a></li>
+ <li><a href="/docs/0.8.0/interpreter/r.html">R</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/scalding.html">Scalding</a></li>
+ <li><a href="/docs/0.8.0/interpreter/scio.html">Scio</a></li>
+ <li><a href="/docs/0.8.0/interpreter/shell.html">Shell</a></li>
+ </ul>
+ </li>
+ <li>
+ <a href="#" data-toggle="dropdown"
class="dropdown-toggle">More<b class="caret"></b></a>
+ <ul class="dropdown-menu scrollable-menu" style="right: 0; left:
auto;">
+ <li class="title"><span>Extending Zeppelin</span></li>
+ <li><a
href="/docs/0.8.0/development/writing_zeppelin_interpreter.html">Writing
Zeppelin Interpreter</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Helium (Experimental)</span></li>
+ <li><a
href="/docs/0.8.0/development/helium/overview.html">Overview</a></li>
+ <li><a
href="/docs/0.8.0/development/helium/writing_application.html">Writing Helium
Application</a></li>
+ <li><a
href="/docs/0.8.0/development/helium/writing_spell.html">Writing Helium
Spell</a></li>
+ <li><a
href="/docs/0.8.0/development/helium/writing_visualization_basic.html">Writing
Helium Visualization: Basics</a></li>
+ <li><a
href="/docs/0.8.0/development/helium/writing_visualization_transformation.html">Writing
Helium Visualization: Transformation</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Contributing to Zeppelin</span></li>
+ <li><a href="/docs/0.8.0/setup/basics/how_to_build.html">How
to Build Zeppelin</a></li>
+ <li><a
href="/docs/0.8.0/development/contribution/useful_developer_tools.html">Useful
Developer Tools</a></li>
+ <li><a
href="/docs/0.8.0/development/contribution/how_to_contribute_code.html">How to
Contribute (code)</a></li>
+ <li><a
href="/docs/0.8.0/development/contribution/how_to_contribute_website.html">How
to Contribute (website)</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>External Resources</span></li>
+ <li><a target="_blank" href="">Mailing List</a></li>
+ <li><a target="_blank" href="">Apache Zeppelin Wiki</a></li>
+ <li><a target="_blank" href="">Stackoverflow Questions about
Zeppelin</a></li>
+ </ul>
+ </li>
+ <li>
+ <a href="/docs/0.8.0/search.html" class="nav-search-link">
+ <span class="fa fa-search nav-search-icon"></span>
+ </a>
+ </li>
+ </ul>
+ </nav><!--/.navbar-collapse -->
+ </div>
+ </div>
+
+
+
+ <div class="content">
+
+<!--<div class="hero-unit Writing a New Interpreter">
+ <h1></h1>
+</div>
+-->
+
+<div class="row">
+ <div class="col-md-12">
+ <!--
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<h1>Writing a New Interpreter</h1>
+
+<div id="toc"></div>
+
+<h2>What is Apache Zeppelin Interpreter</h2>
+
+<p>Apache Zeppelin Interpreter is a language backend. For example to use scala
code in Zeppelin, you need a scala interpreter.
+Every Interpreters belongs to an <strong>InterpreterGroup</strong>.
+Interpreters in the same InterpreterGroup can reference each other. For
example, SparkSqlInterpreter can reference SparkInterpreter to get SparkContext
from it while they're in the same group.</p>
+
+<p><img class="img-responsive" style="width:50%; border: 1px solid #ecf0f1;"
height="auto" src="/docs/0.8.0/assets/themes/zeppelin/img/interpreter.png"
/></p>
+
+<p><a
href="https://github.com/apache/zeppelin/blob/master/zeppelin-zengine/src/main/java/org/apache/zeppelin/interpreter/InterpreterSetting.java";>InterpreterSetting</a>
is configuration of a given <a
href="https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/InterpreterGroup.java";>InterpreterGroup</a>
and a unit of start/stop interpreter.
+All Interpreters in the same InterpreterSetting are launched in a single,
separate JVM process. The Interpreter communicates with Zeppelin engine via
<strong><a
href="https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/thrift/RemoteInterpreterService.thrift";>Thrift</a></strong>.</p>
+
+<p>In 'Separate Interpreter(scoped / isolated) for each note' mode
which you can see at the <strong>Interpreter Setting</strong> menu when you
create a new interpreter, new interpreter instance will be created per note.
But it still runs on the same JVM while they're in the same
InterpreterSettings.</p>
+
+<h2>Make your own Interpreter</h2>
+
+<p>Creating a new interpreter is quite simple. Just extend <a
href="https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/Interpreter.java";>org.apache.zeppelin.interpreter</a>
abstract class and implement some methods.
+For your interpreter project, you need to make <code>interpreter-parent</code>
as your parent project and use plugin <code>maven-enforcer-plugin</code>,
<code>maven-dependency-plugin</code> and <code>maven-resources-plugin</code>.
Here's one sample pom.xml </p>
+<div class="highlight"><pre><code class="language-xml"
data-lang="xml"><span></span><span class="nt"><project</span> <span
class="na">xmlns=</span><span
class="s">"http://maven.apache.org/POM/4.0.0"</span> <span
class="na">xmlns:xsi=</span><span
class="s">"http://www.w3.org/2001/XMLSchema-instance"</span> <span
class="na">xsi:schemaLocation=</span><span
class="s">"http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd"</span><span
class="nt">></span>
+ <span class="nt"><modelVersion></span>4.0.0<span
class="nt"></modelVersion></span>
+
+ <span class="nt"><parent></span>
+ <span class="nt"><artifactId></span>interpreter-parent<span
class="nt"></artifactId></span>
+ <span class="nt"><groupId></span>org.apache.zeppelin<span
class="nt"></groupId></span>
+ <span class="nt"><version></span>0.8.0-SNAPSHOT<span
class="nt"></version></span>
+ <span class="nt"><relativePath></span>../interpreter-parent<span
class="nt"></relativePath></span>
+ <span class="nt"></parent></span>
+
+ ...
+
+ <span class="nt"><dependencies></span>
+ <span class="nt"><dependency></span>
+ <span class="nt"><groupId></span>org.apache.zeppelin<span
class="nt"></groupId></span>
+ <span
class="nt"><artifactId></span>zeppelin-interpreter<span
class="nt"></artifactId></span>
+ <span class="nt"><version></span>${project.version}<span
class="nt"></version></span>
+ <span class="nt"><scope></span>provided<span
class="nt"></scope></span>
+ <span class="nt"></dependency></span>
+ <span class="nt"></dependencies></span>
+
+ <span class="nt"><build></span>
+ <span class="nt"><plugins></span>
+ <span class="nt"><plugin></span>
+ <span
class="nt"><artifactId></span>maven-enforcer-plugin<span
class="nt"></artifactId></span>
+ <span class="nt"></plugin></span>
+ <span class="nt"><plugin></span>
+ <span
class="nt"><artifactId></span>maven-dependency-plugin<span
class="nt"></artifactId></span>
+ <span class="nt"></plugin></span>
+ <span class="nt"><plugin></span>
+ <span
class="nt"><artifactId></span>maven-resources-plugin<span
class="nt"></artifactId></span>
+ <span class="nt"></plugin></span>
+ <span class="nt"></plugins></span>
+ <span class="nt"></build></span>
+
+<span class="nt"></project></span>
+</code></pre></div>
+<p>You should include
<code>org.apache.zeppelin:zeppelin-interpreter:[VERSION]</code> as your
interpreter's dependency in <code>pom.xml</code>. Bes
+And you should put your jars under your interpreter directory with a specific
directory name. Zeppelin server reads interpreter directories recursively and
initializes interpreters including your own interpreter.</p>
+
+<p>There are three locations where you can store your interpreter group, name
and other information. Zeppelin server tries to find the location below. Next,
Zeppelin tries to find <code>interpreter-setting.json</code> in your
interpreter jar.</p>
+<div class="highlight"><pre><code class="language-text"
data-lang="text"><span></span>{ZEPPELIN_INTERPRETER_DIR}/{YOUR_OWN_INTERPRETER_DIR}/interpreter-setting.json
+</code></pre></div>
+<p>Here is an example of <code>interpreter-setting.json</code> on your own
interpreter.</p>
+<div class="highlight"><pre><code class="language-json"
data-lang="json"><span></span><span class="p">[</span>
+ <span class="p">{</span>
+ <span class="nt">"group"</span><span class="p">:</span> <span
class="s2">"your-group"</span><span class="p">,</span>
+ <span class="nt">"name"</span><span class="p">:</span> <span
class="s2">"your-name"</span><span class="p">,</span>
+ <span class="nt">"className"</span><span class="p">:</span>
<span class="s2">"your.own.interpreter.class"</span><span
class="p">,</span>
+ <span class="nt">"properties"</span><span class="p">:</span>
<span class="p">{</span>
+ <span class="nt">"properties1"</span><span class="p">:</span>
<span class="p">{</span>
+ <span class="nt">"envName"</span><span class="p">:</span>
<span class="kc">null</span><span class="p">,</span>
+ <span class="nt">"propertyName"</span><span
class="p">:</span> <span class="s2">"property.1.name"</span><span
class="p">,</span>
+ <span class="nt">"defaultValue"</span><span
class="p">:</span> <span
class="s2">"propertyDefaultValue"</span><span class="p">,</span>
+ <span class="nt">"description"</span><span
class="p">:</span> <span class="s2">"Property
description"</span><span class="p">,</span>
+ <span class="nt">"type"</span><span class="p">:</span> <span
class="s2">"textarea"</span>
+ <span class="p">},</span>
+ <span class="nt">"properties2"</span><span class="p">:</span>
<span class="p">{</span>
+ <span class="nt">"envName"</span><span class="p">:</span>
<span class="err">PROPERTIES_</span><span class="mi">2</span><span
class="p">,</span>
+ <span class="nt">"propertyName"</span><span
class="p">:</span> <span class="kc">null</span><span class="p">,</span>
+ <span class="nt">"defaultValue"</span><span
class="p">:</span> <span
class="s2">"property2DefaultValue"</span><span class="p">,</span>
+ <span class="nt">"description"</span><span
class="p">:</span> <span class="s2">"Property 2
description"</span><span class="p">,</span>
+ <span class="nt">"type"</span><span class="p">:</span> <span
class="s2">"textarea"</span>
+ <span class="p">},</span> <span class="err">...</span>
+ <span class="p">},</span>
+ <span class="nt">"editor"</span><span class="p">:</span> <span
class="p">{</span>
+ <span class="nt">"language"</span><span class="p">:</span>
<span class="s2">"your-syntax-highlight-language"</span><span
class="p">,</span>
+ <span class="nt">"editOnDblClick"</span><span
class="p">:</span> <span class="kc">false</span><span class="p">,</span>
+ <span class="nt">"completionKey"</span><span
class="p">:</span> <span class="s2">"TAB"</span>
+ <span class="p">}</span>
+ <span class="p">},</span>
+ <span class="p">{</span>
+ <span class="err">...</span>
+ <span class="p">}</span>
+<span class="p">]</span>
+</code></pre></div>
+<p>Finally, Zeppelin uses static initialization with the following:</p>
+<div class="highlight"><pre><code class="language-java"
data-lang="java"><span></span><span class="kd">static</span> <span
class="o">{</span>
+ <span class="n">Interpreter</span><span class="o">.</span><span
class="na">register</span><span class="o">(</span><span
class="s">"MyInterpreterName"</span><span class="o">,</span> <span
class="n">MyClassName</span><span class="o">.</span><span
class="na">class</span><span class="o">.</span><span
class="na">getName</span><span class="o">());</span>
+<span class="o">}</span>
+</code></pre></div>
+<p><strong>Static initialization is deprecated and will be supported until
0.6.0.</strong></p>
+
+<p>The name will appear later in the interpreter name option box during the
interpreter configuration process.
+The name of the interpreter is what you later write to identify a paragraph
which should be interpreted using this interpreter.</p>
+<div class="highlight"><pre><code class="language-text"
data-lang="text"><span></span>%MyInterpreterName
+some interpreter specific code...
+</code></pre></div>
+<h2>Editor setting for Interpreter</h2>
+
+<p>You can add <code>editor</code> object to
<code>interpreter-setting.json</code> file to specify paragraph editor
settings.</p>
+
+<h3>Language</h3>
+
+<p>If the interpreter uses a specific programming language (like Scala,
Python, SQL), it is generally recommended to add a syntax highlighting
supported for that to the note paragraph editor.</p>
+
+<p>To check out the list of languages supported, see the
<code>mode-*.js</code> files under
<code>zeppelin-web/bower_components/ace-builds/src-noconflict</code> or from <a
href="https://github.com/ajaxorg/ace-builds/tree/master/src-noconflict";>github.com/ajaxorg/ace-builds</a>.</p>
+
+<p>If you want to add a new set of syntax highlighting, </p>
+
+<ol>
+<li>Add the <code>mode-*.js</code> file to <code><a
href="https://github.com/apache/zeppelin/blob/master/zeppelin-web/bower.json";>zeppelin-web/bower.json</a></code>
(when built, <code><a
href="https://github.com/apache/zeppelin/blob/master/zeppelin-web/src/index.html";>zeppelin-web/src/index.html</a></code>
will be changed automatically).</li>
+<li>Add <code>language</code> field to <code>editor</code> object. Note that
if you don't specify language field, your interpreter will use plain text
mode for syntax highlighting. Let's say you want to set your language to
<code>java</code>, then add:</li>
+</ol>
+<div class="highlight"><pre><code class="language-json"
data-lang="json"><span></span> <span class="s2">"editor"</span><span
class="err">:</span> <span class="p">{</span>
+ <span class="nt">"language"</span><span class="p">:</span>
<span class="s2">"java"</span>
+ <span class="p">}</span>
+</code></pre></div>
+<h3>Edit on double click</h3>
+
+<p>If your interpreter uses mark-up language such as markdown or HTML, set
<code>editOnDblClick</code> to <code>true</code> so that text editor opens on
pargraph double click and closes on paragraph run. Otherwise set it to
<code>false</code>.</p>
+<div class="highlight"><pre><code class="language-json"
data-lang="json"><span></span><span class="s2">"editor"</span><span
class="err">:</span> <span class="p">{</span>
+ <span class="nt">"editOnDblClick"</span><span class="p">:</span>
<span class="kc">false</span>
+<span class="p">}</span>
+</code></pre></div>
+<h3>Completion key (Optional)</h3>
+
+<p>By default, <code>Ctrl+dot(.)</code> brings autocompletion list in the
editor.
+Through <code>completionKey</code>, each interpreter can configure
autocompletion key.
+Currently <code>TAB</code> is only available option.</p>
+<div class="highlight"><pre><code class="language-json"
data-lang="json"><span></span><span class="s2">"editor"</span><span
class="err">:</span> <span class="p">{</span>
+ <span class="nt">"completionKey"</span><span class="p">:</span>
<span class="s2">"TAB"</span>
+<span class="p">}</span>
+</code></pre></div>
+<h2>Install your interpreter binary</h2>
+
+<p>Once you have built your interpreter, you can place it under the
interpreter directory with all its dependencies.</p>
+<div class="highlight"><pre><code class="language-text"
data-lang="text"><span></span>[ZEPPELIN_HOME]/interpreter/[INTERPRETER_NAME]/
+</code></pre></div>
+<h2>Configure your interpreter</h2>
+
+<p>To configure your interpreter you need to follow these steps:</p>
+
+<ol>
+<li>Add your interpreter class name to the zeppelin.interpreters property in
<code>conf/zeppelin-site.xml</code>.</li>
+</ol>
+
+<p>Property value is comma separated [INTERPRETER_CLASS_NAME].
+ For example,</p>
+<div class="highlight"><pre><code class="language-xml"
data-lang="xml"><span></span> <span class="nt"><property></span>
+ <span class="nt"><name></span>zeppelin.interpreters<span
class="nt"></name></span>
+ <span
class="nt"><value></span>org.apache.zeppelin.spark.SparkInterpreter,org.apache.zeppelin.spark.PySparkInterpreter,org.apache.zeppelin.spark.SparkSqlInterpreter,org.apache.zeppelin.spark.DepInterpreter,org.apache.zeppelin.markdown.Markdown,org.apache.zeppelin.shell.ShellInterpreter,org.apache.zeppelin.hive.HiveInterpreter,com.me.MyNewInterpreter<span
class="nt"></value></span>
+ <span class="nt"></property></span>
+</code></pre></div>
+<ol>
+<li><p>Add your interpreter to the <a
href="https://github.com/apache/zeppelin/blob/master/zeppelin-zengine/src/main/java/org/apache/zeppelin/conf/ZeppelinConfiguration.java#L397";>default
configuration</a> which is used when there is no
<code>zeppelin-site.xml</code>.</p></li>
+<li><p>Start Zeppelin by running <code>./bin/zeppelin-daemon.sh
start</code>.</p></li>
+<li><p>In the interpreter page, click the <code>+Create</code> button and
configure your interpreter properties.
+Now you are done and ready to use your interpreter.</p></li>
+</ol>
+
+<blockquote>
+<p><strong>Note :</strong> Interpreters released with zeppelin have a <a
href="https://github.com/apache/zeppelin/blob/master/zeppelin-zengine/src/main/java/org/apache/zeppelin/conf/ZeppelinConfiguration.java#L397";>default
configuration</a> which is used when there is no
<code>conf/zeppelin-site.xml</code>.</p>
+</blockquote>
+
+<h2>Use your interpreter</h2>
+
+<h3>0.5.0</h3>
+
+<p>Inside of a note, <code>%[INTERPRETER_NAME]</code> directive will call your
interpreter.
+Note that the first interpreter configuration in zeppelin.interpreters will be
the default one.</p>
+
+<p>For example,</p>
+<div class="highlight"><pre><code class="language-scala"
data-lang="scala"><span></span><span class="o">%</span><span
class="n">myintp</span>
+
+<span class="k">val</span> <span class="n">a</span> <span class="k">=</span>
<span class="s">"My interpreter"</span>
+<span class="n">println</span><span class="o">(</span><span
class="n">a</span><span class="o">)</span>
+</code></pre></div>
+<h3>0.6.0 and later</h3>
+
+<p>Inside of a note, <code>%[INTERPRETER_GROUP].[INTERPRETER_NAME]</code>
directive will call your interpreter.</p>
+
+<p>You can omit either <code>[INTERPRETER\_GROUP]</code> or
<code>[INTERPRETER\_NAME]</code>. If you omit <code>[INTERPRETER\_NAME]</code>,
then first available interpreter will be selected in the
<code>[INTERPRETER\_GROUP]</code>.
+Likewise, if you skip <code>[INTERPRETER\_GROUP]</code>, then
<code>[INTERPRETER\_NAME]</code> will be chosen from default interpreter
group.</p>
+
+<p>For example, if you have two interpreter <code>myintp1</code> and
<code>myintp2</code> in group <code>mygrp</code>, you can call myintp1 like</p>
+<div class="highlight"><pre><code class="language-text"
data-lang="text"><span></span>%mygrp.myintp1
+
+codes for myintp1
+</code></pre></div>
+<p>and you can call <code>myintp2</code> like</p>
+<div class="highlight"><pre><code class="language-text"
data-lang="text"><span></span>%mygrp.myintp2
+
+codes for myintp2
+</code></pre></div>
+<p>If you omit your interpreter name, it'll select first available
interpreter in the group ( <code>myintp1</code> ).</p>
+<div class="highlight"><pre><code class="language-text"
data-lang="text"><span></span>%mygrp
+
+codes for myintp1
+</code></pre></div>
+<p>You can only omit your interpreter group when your interpreter group is
selected as a default group.</p>
+<div class="highlight"><pre><code class="language-text"
data-lang="text"><span></span>%myintp2
+
+codes for myintp2
+</code></pre></div>
+<h2>Examples</h2>
+
+<p>Checkout some interpreters released with Zeppelin by default.</p>
+
+<ul>
+<li><a
href="https://github.com/apache/zeppelin/tree/master/spark";>spark</a></li>
+<li><a
href="https://github.com/apache/zeppelin/tree/master/markdown";>markdown</a></li>
+<li><a
href="https://github.com/apache/zeppelin/tree/master/shell";>shell</a></li>
+<li><a href="https://github.com/apache/zeppelin/tree/master/jdbc";>jdbc</a></li>
+</ul>
+
+<h2>Contributing a new Interpreter to Zeppelin releases</h2>
+
+<p>We welcome contribution to a new interpreter. Please follow these few
steps:</p>
+
+<ul>
+<li>First, check out the general contribution guide <a
href="https://zeppelin.apache.org/contribution/contributions.html";>here</a>.</li>
+<li>Follow the steps in <a href="#make-your-own-interpreter">Make your own
Interpreter</a> section and <a href="#editor-setting-for-interpreter">Editor
setting for Interpreter</a> above.</li>
+<li>Add your interpreter as in the <a
href="#configure-your-interpreter">Configure your interpreter</a> section
above; also add it to the example template <a
href="https://github.com/apache/zeppelin/blob/master/conf/zeppelin-site.xml.template";>zeppelin-site.xml.template</a>.</li>
+<li>Add tests! They are run by <a
href="https://travis-ci.org/apache/zeppelin";>Travis</a> for all changes and it
is important that they are self-contained.</li>
+<li>Include your interpreter as a module in <a
href="https://github.com/apache/zeppelin/blob/master/pom.xml";><code>pom.xml</code></a>.</li>
+<li>Add documentation on how to use your interpreter under
<code>docs/interpreter/</code>. Follow the Markdown style as this <a
href="https://github.com/apache/zeppelin/blob/master/docs/interpreter/elasticsearch.md";>example</a>.
Make sure you list config settings and provide working examples on using your
interpreter in code boxes in Markdown. Link to images as appropriate (images
should go to <code>docs/assets/themes/zeppelin/img/docs-img/</code>). And add a
link to your documentation in the navigation menu
(<code>docs/_includes/themes/zeppelin/_navigation.html</code>).</li>
+<li>Most importantly, ensure licenses of the transitive closure of all
dependencies are list in <a
href="https://github.com/apache/zeppelin/blob/master/zeppelin-distribution/src/bin_license/LICENSE";>license
file</a>.</li>
+<li>Commit your changes and open a <a
href="https://github.com/apache/zeppelin/pulls";>Pull Request</a> on the project
<a href="https://github.com/apache/zeppelin";>Mirror on GitHub</a>; check to
make sure Travis CI build is passing.</li>
+</ul>
+
+ </div>
+</div>
+
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href="/docs/0.8.0/usage/other_features/notebook_actions.html">Notebook
Actions</a></li>
+ <li><a
href="/docs/0.8.0/usage/other_features/cron_scheduler.html">Cron
Scheduler</a></li>
+ <li><a
href="/docs/0.8.0/usage/other_features/zeppelin_context.html">Zeppelin
Context</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>REST API</span></li>
+ <li><a
href="/docs/0.8.0/usage/rest_api/interpreter.html">Interpreter API</a></li>
+ <li><a
href="/docs/0.8.0/usage/rest_api/zeppelin_server.html">Zeppelin Server
API</a></li>
+ <li><a
href="/docs/0.8.0/usage/rest_api/notebook.html">Notebook API</a></li>
+ <li><a
href="/docs/0.8.0/usage/rest_api/notebook_repository.html">Notebook Repository
API</a></li>
+ <li><a
href="/docs/0.8.0/usage/rest_api/configuration.html">Configuration API</a></li>
+ <li><a
href="/docs/0.8.0/usage/rest_api/credential.html">Credential API</a></li>
+ <li><a href="/docs/0.8.0/usage/rest_api/helium.html">Helium
API</a></li>
+ </ul>
+ </li>
+
+ <li>
+ <a href="#" data-toggle="dropdown"
class="dropdown-toggle">Setup<b class="caret"></b></a>
+ <ul class="dropdown-menu scrollable-menu">
+ <li class="title"><span>Basics</span></li>
+ <li><a href="/docs/0.8.0/setup/basics/how_to_build.html">How
to Build Zeppelin</a></li>
+ <li><a
href="/docs/0.8.0/setup/basics/multi_user_support.html">Multi-user
Support</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Deployment</span></li>
+ <!--<li><a
href="/docs/0.8.0/setup/deployment/docker.html">Docker Image for
Zeppelin</a></li>-->
+ <li><a
href="/docs/0.8.0/setup/deployment/spark_cluster_mode.html#spark-standalone-mode">Spark
Cluster Mode: Standalone</a></li>
+ <li><a
href="/docs/0.8.0/setup/deployment/spark_cluster_mode.html#spark-on-yarn-mode">Spark
Cluster Mode: YARN</a></li>
+ <li><a
href="/docs/0.8.0/setup/deployment/spark_cluster_mode.html#spark-on-mesos-mode">Spark
Cluster Mode: Mesos</a></li>
+ <li><a
href="/docs/0.8.0/setup/deployment/flink_and_spark_cluster.html">Zeppelin with
Flink, Spark Cluster</a></li>
+ <li><a href="/docs/0.8.0/setup/deployment/cdh.html">Zeppelin
on CDH</a></li>
+ <li><a
href="/docs/0.8.0/setup/deployment/virtual_machine.html">Zeppelin on VM:
Vagrant</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Security</span></li>
+ <li><a
href="/docs/0.8.0/setup/security/authentication_nginx.html">HTTP Basic Auth
using NGINX</a></li>
+ <li><a
href="/docs/0.8.0/setup/security/shiro_authentication.html">Shiro
Authentication</a></li>
+ <li><a
href="/docs/0.8.0/setup/security/notebook_authorization.html">Notebook
Authorization</a></li>
+ <li><a
href="/docs/0.8.0/setup/security/datasource_authorization.html">Data Source
Authorization</a></li>
+ <li><a
href="/docs/0.8.0/setup/security/http_security_headers.html">HTTP Security
Headers</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Notebook Storage</span></li>
+ <li><a
href="/docs/0.8.0/setup/storage/storage.html#notebook-storage-in-local-git-repository">Git
Storage</a></li>
+ <li><a
href="/docs/0.8.0/setup/storage/storage.html#notebook-storage-in-s3">S3
Storage</a></li>
+ <li><a
href="/docs/0.8.0/setup/storage/storage.html#notebook-storage-in-azure">Azure
Storage</a></li>
+ <li><a
href="/docs/0.8.0/setup/storage/storage.html#notebook-storage-in-zeppelinhub">ZeppelinHub
Storage</a></li>
+ <li><a
href="/docs/0.8.0/setup/storage/storage.html#notebook-storage-in-mongodb">MongoDB
Storage</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Operation</span></li>
+ <li><a
href="/docs/0.8.0/setup/operation/configuration.html">Configuration</a></li>
+ <li><a
href="/docs/0.8.0/setup/operation/proxy_setting.html">Proxy Setting</a></li>
+ <li><a
href="/docs/0.8.0/setup/operation/upgrading.html">Upgrading</a></li>
+ <li><a
href="/docs/0.8.0/setup/operation/trouble_shooting.html">Trouble
Shooting</a></li>
+ </ul>
+ </li>
+
+ <li>
+ <a href="#" data-toggle="dropdown"
class="dropdown-toggle">Interpreter <b class="caret"></b></a>
+ <ul class="dropdown-menu scrollable-menu">
+ <li class="title"><span>Interpreters</span></li>
+ <li><a
href="/docs/0.8.0/usage/interpreter/overview.html">Overview</a></li>
+ <li role="separator" class="divider"></li>
+ <li><a href="/docs/0.8.0/interpreter/spark.html">Spark</a></li>
+ <li><a href="/docs/0.8.0/interpreter/jdbc.html">JDBC</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/python.html">Python</a></li>
+ <li role="separator" class="divider"></li>
+ <li><a
href="/docs/0.8.0/interpreter/alluxio.html">Alluxio</a></li>
+ <li><a href="/docs/0.8.0/interpreter/beam.html">Beam</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/bigquery.html">BigQuery</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/cassandra.html">Cassandra</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/elasticsearch.html">Elasticsearch</a></li>
+ <li><a href="/docs/0.8.0/interpreter/flink.html">Flink</a></li>
+ <li><a href="/docs/0.8.0/interpreter/geode.html">Geode</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/groovy.html">Groovy</a></li>
+ <li><a href="/docs/0.8.0/interpreter/hbase.html">HBase</a></li>
+ <li><a href="/docs/0.8.0/interpreter/hdfs.html">HDFS</a></li>
+ <li><a href="/docs/0.8.0/interpreter/hive.html">Hive</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/ignite.html">Ignite</a></li>
+ <li><a href="/docs/0.8.0/interpreter/kylin.html">Kylin</a></li>
+ <li><a href="/docs/0.8.0/interpreter/lens.html">Lens</a></li>
+ <li><a href="/docs/0.8.0/interpreter/livy.html">Livy</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/markdown.html">Markdown</a></li>
+ <li><a href="/docs/0.8.0/interpreter/neo4j.html">Neo4j</a></li>
+ <li><a href="/docs/0.8.0/interpreter/pig.html">Pig</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/postgresql.html">Postgresql, HAWQ</a></li>
+ <li><a href="/docs/0.8.0/interpreter/r.html">R</a></li>
+ <li><a
href="/docs/0.8.0/interpreter/scalding.html">Scalding</a></li>
+ <li><a href="/docs/0.8.0/interpreter/scio.html">Scio</a></li>
+ <li><a href="/docs/0.8.0/interpreter/shell.html">Shell</a></li>
+ </ul>
+ </li>
+ <li>
+ <a href="#" data-toggle="dropdown"
class="dropdown-toggle">More<b class="caret"></b></a>
+ <ul class="dropdown-menu scrollable-menu" style="right: 0; left:
auto;">
+ <li class="title"><span>Extending Zeppelin</span></li>
+ <li><a
href="/docs/0.8.0/development/writing_zeppelin_interpreter.html">Writing
Zeppelin Interpreter</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Helium (Experimental)</span></li>
+ <li><a
href="/docs/0.8.0/development/helium/overview.html">Overview</a></li>
+ <li><a
href="/docs/0.8.0/development/helium/writing_application.html">Writing Helium
Application</a></li>
+ <li><a
href="/docs/0.8.0/development/helium/writing_spell.html">Writing Helium
Spell</a></li>
+ <li><a
href="/docs/0.8.0/development/helium/writing_visualization_basic.html">Writing
Helium Visualization: Basics</a></li>
+ <li><a
href="/docs/0.8.0/development/helium/writing_visualization_transformation.html">Writing
Helium Visualization: Transformation</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Contributing to Zeppelin</span></li>
+ <li><a href="/docs/0.8.0/setup/basics/how_to_build.html">How
to Build Zeppelin</a></li>
+ <li><a
href="/docs/0.8.0/development/contribution/useful_developer_tools.html">Useful
Developer Tools</a></li>
+ <li><a
href="/docs/0.8.0/development/contribution/how_to_contribute_code.html">How to
Contribute (code)</a></li>
+ <li><a
href="/docs/0.8.0/development/contribution/how_to_contribute_website.html">How
to Contribute (website)</a></li>
+ <li role="separator" class="divider"></li>
+ <li class="title"><span>External Resources</span></li>
+ <li><a target="_blank" href="">Mailing List</a></li>
+ <li><a target="_blank" href="">Apache Zeppelin Wiki</a></li>
+ <li><a target="_blank" href="">Stackoverflow Questions about
Zeppelin</a></li>
+ </ul>
+ </li>
+ <li>
+ <a href="/docs/0.8.0/search.html" class="nav-search-link">
+ <span class="fa fa-search nav-search-icon"></span>
+ </a>
+ </li>
+ </ul>
+ </nav><!--/.navbar-collapse -->
+ </div>
+ </div>
+
+
+
+ <div class="content">
+
+<!--<div class="hero-unit ">
+ <h1></h1>
+</div>
+-->
+
+<div class="row">
+ <div class="col-md-12">
+ <!--
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<div class="row" style="margin-top: 0px;">
+ <div class="col-sm-6 col-md-6" style="padding-right:0;">
+ <h1 style="color:#4c555a; margin-top: 0px;">What is Apache Zeppelin?</h1>
+ <p style="margin-bottom: 0px; margin-top: 20px; font-size: 18px;
font-style="font-family: "Roboto", sans-serif;">
+ Multi-purpose notebook which supports
+ </p>
+ <p style="font-size: 18px; font-style="font-family: "Roboto", sans-serif;">
+ 20+ language backends
+ </p>
+ <ul style="list-style-type: none; padding-left:10px; margin-top: 30px;" >
+ <li style="font-weight: 300; font-size:18px; margin: 5px;"><span
class="glyphicon glyphicon-import" style="margin-right:10px"></span> Data
Ingestion</li>
+ <li style="font-weight: 300; font-size:18px; margin: 5px;"><span
class="glyphicon glyphicon-eye-open" style="margin-right:10px"></span> Data
Discovery</li>
+ <li style="font-weight: 300; font-size:18px; margin: 5px;"><span
class="glyphicon glyphicon-wrench" style="margin-right:10px"></span> Data
Analytics</li>
+ <li style="font-weight: 300; font-size:18px; margin: 5px;"><span
class="glyphicon glyphicon-dashboard" style="margin-right:10px"></span> Data
Visualization & Collaboration</li>
+ </ul>
+ <br/>
+ </div>
+ <div class="col-sm-6 col-md-6" style="padding:0;">
+ <div class="hidden-xs" style="margin-top: 60px;"></div>
+ <img class="img-responsive" style="border: 1px solid #ecf0f1;"
src="/docs/0.8.0/assets/themes/zeppelin/img/notebook.png" />
+ </div>
+</div>
+
+<h2>Documentation</h2>
+
+<h4>Quick Start</h4>
+
+<ul>
+<li><a href="./quickstart/install.html">Install</a> for basic instructions on
installing Apache Zeppelin</li>
+<li><a href="./quickstart/explore_ui.html">Explore UI</a>: basic components of
Apache Zeppelin home</li>
+<li><a href="./quickstart/tutorial.html">Tutorial</a></li>
+<li><a href="./quickstart/spark_with_zeppelin.html">Spark with
Zeppelin</a></li>
+<li><a href="./quickstart/sql_with_zeppelin.html">SQL with Zeppelin</a></li>
+<li><a href="./quickstart/python_with_zeppelin.html">Python with
Zeppelin</a></li>
+</ul>
+
+<h4>Usage</h4>
+
+<ul>
+<li>Dynamic Form
+
+<ul>
+<li><a href="./usage/dynamic_form/intro.html">What is Dynamic Form</a>: a step
by step guide for creating dynamic forms</li>
+</ul></li>
+<li>Display System
+
+<ul>
+<li><a href="./usage/display_system/basic.html#text">Text Display
(<code>%text</code>)</a></li>
+<li><a href="./usage/display_system/basic.html#html">HTML Display
(<code>%html</code>)</a></li>
+<li><a href="./usage/display_system/basic.html#table">Table Display
(<code>%table</code>)</a></li>
+<li><a href="./usage/display_system/basic.html#network">Network Display
(<code>%network</code>)</a></li>
+<li><a href="./usage/display_system/angular_backend.html">Angular Display
using Backend API (<code>%angular</code>)</a></li>
+<li><a href="./usage/display_system/angular_frontend.html">Angular Display
using Frontend API (<code>%angular</code>)</a></li>
+</ul></li>
+<li>Interpreter<br>
+
+<ul>
+<li><a href="./usage/interpreter/overview.html">Overview</a>: what is
interpreter group? how can you set interpreters in Apache Zeppelin?</li>
+<li><a href="./usage/interpreter/user_impersonation.html">User
Impersonation</a> when you want to run interpreter as end user</li>
+<li><a href="./usage/interpreter/interpreter_binding_mode.html">Interpreter
Binding Mode</a> when you want to manage separate interpreter contexts </li>
+<li><a href="./usage/interpreter/dependency_management.html">Dependency
Management</a> when you include external libraries to interpreter</li>
+<li><a href="./usage/interpreter/installation.html">Installing
Interpreters</a>: Install not only community managed interpreters but also 3rd
party interpreters</li>
+<li><a href="./usage/interpreter/execution_hooks.html">Execution Hooks</a> to
specify additional code to be executed by an interpreter at pre and
post-paragraph code execution</li>
+</ul></li>
+<li>Other Features:
+
+<ul>
+<li><a href="./usage/other_features/publishing_paragraphs.html">Publishing
Paragraphs</a> results into your external website</li>
+<li><a href="./usage/other_features/personalized_mode.html">Personalized
Mode</a> </li>
+<li><a href="./usage/other_features/customizing_homepage.html">Customizing
Zeppelin Homepage</a> with one of your notebooks</li>
+<li><a href="./usage/other_features/notebook_actions.html">Notebook
actions</a></li>
+<li><a
href="./usage/other_features/zeppelin_context.html">Zeppelin-Context</a></li>
+</ul></li>
+<li>REST API: available REST API list in Apache Zeppelin
+
+<ul>
+<li><a href="./usage/rest_api/interpreter.html">Interpreter API</a></li>
+<li><a href="./usage/rest_api/zeppelin_server.html">Zeppelin Server
API</a></li>
+<li><a href="./usage/rest_api/notebook.html">Notebook API</a></li>
+<li><a href="./usage/rest_api/notebook_repository.html">Notebook Repository
API</a></li>
+<li><a href="./usage/rest_api/configuration.html">Configuration API</a></li>
+<li><a href="./usage/rest_api/credential.html">Credential API</a></li>
+<li><a href="./usage/rest_api/helium.html">Helium API</a></li>
+</ul></li>
+</ul>
+
+<h4>Setup</h4>
+
+<ul>
+<li>Basics
+
+<ul>
+<li><a href="./setup/basics/how_to_build.html">How to Build Zeppelin</a></li>
+<li><a href="./setup/basics/multi_user_support.html">Multi-user
Support</a></li>
+</ul></li>
+<li>Deployment
+
+<ul>
+<li><a
href="./setup/deployment/spark_cluster_mode.html#spark-standalone-mode">Spark
Cluster Mode: Standalone</a></li>
+<li><a
href="./setup/deployment/spark_cluster_mode.html#spark-on-yarn-mode">Spark
Cluster Mode: YARN</a></li>
+<li><a
href="./setup/deployment/spark_cluster_mode.html#spark-on-mesos-mode">Spark
Cluster Mode: Mesos</a></li>
+<li><a href="./setup/deployment/flink_and_spark_cluster.html">Zeppelin with
Flink and Spark Cluster</a></li>
+<li><a href="./setup/deployment/cdh.html">Zeppelin on CDH</a></li>
+<li><a href="./setup/deployment/virtual_machine.html">Zeppelin on VM:
Vagrant</a></li>
+</ul></li>
+<li>Security: available security support in Apache Zeppelin
+
+<ul>
+<li><a href="./setup/security/authentication_nginx.html">HTTP Basic Auth using
NGINX</a></li>
+<li><a href="./setup/security/shiro_authentication.html">Shiro
Authentication</a></li>
+<li><a href="./setup/security/notebook_authorization.html">Notebook
Authorization</a></li>
+<li><a href="./setup/security/datasource_authorization.html">Data Source
Authorization</a></li>
+<li><a href="./setup/security/http_security_headers.html">HTTP Security
Headers</a></li>
+</ul></li>
+<li>Notebook Storage: a guide about saving notebooks to external storage
+
+<ul>
+<li><a
href="./setup/storage/storage.html#notebook-storage-in-local-git-repository">Git
Storage</a></li>
+<li><a href="./setup/storage/storage.html#notebook-storage-in-s3">S3
Storage</a></li>
+<li><a href="./setup/storage/storage.html#notebook-storage-in-azure">Azure
Storage</a></li>
+<li><a href="./setup/storage/storage.html#notebook-storage-in-gcs">Google
Cloud Storage</a></li>
+<li><a
href="./setup/storage/storage.html#notebook-storage-in-zeppelinhub">ZeppelinHub
Storage</a></li>
+<li><a href="./setup/storage/storage.html#notebook-storage-in-mongodb">MongoDB
Storage</a></li>
+</ul></li>
+<li>Operation
+
+<ul>
+<li><a href="./setup/operation/configuration.html">Configuration</a>: lists
for Apache Zeppelin</li>
+<li><a href="./setup/operation/proxy_setting.html">Proxy Setting</a></li>
+<li><a href="./setup/operation/upgrading.html">Upgrading</a>: a manual
procedure of upgrading Apache Zeppelin version</li>
+<li><a href="./setup/operation/trouble_shooting.html">Trouble Shooting</a></li>
+</ul></li>
+</ul>
+
+<h4>Developer Guide</h4>
+
+<ul>
+<li>Extending Zeppelin
+
+<ul>
+<li><a href="./development/writing_zeppelin_interpreter.html">Writing Zeppelin
Interpreter</a></li>
+<li><a href="./development/helium/overview.html">Helium: Overview</a></li>
+<li><a href="./development/helium/writing_application.html">Helium: Writing
Application</a></li>
+<li><a href="./development/helium/writing_spell.html">Helium: Writing
Spell</a></li>
+<li><a href="./development/helium/writing_visualization_basic.html">Helium:
Writing Visualization: Basic</a></li>
+<li><a
href="./development/helium/writing_visualization_transformation.html">Helium:
Writing Visualization: Transformation</a></li>
+</ul></li>
+<li>Contributing to Zeppelin
+
+<ul>
+<li><a href="./setup/basics/how_to_build.html">How to Build Zeppelin</a></li>
+<li><a href="./development/contribution/useful_developer_tools.html">Useful
Developer Tools</a></li>
+<li><a href="./development/contribution/how_to_contribute_code.html">How to
Contribute (code)</a></li>
+<li><a href="./development/contribution/how_to_contribute_website.html">How to
Contribute (website)</a></li>
+</ul></li>
+</ul>
+
+<h4>Available Interpreters</h4>
+
+<ul>
+<li><a href="./interpreter/alluxio.html">Alluxio</a></li>
+<li><a href="./interpreter/beam.html">Beam</a></li>
+<li><a href="./interpreter/bigquery.html">BigQuery</a></li>
+<li><a href="./interpreter/cassandra.html">Cassandra</a></li>
+<li><a href="./interpreter/elasticsearch.html">Elasticsearch</a></li>
+<li><a href="./interpreter/flink.html">Flink</a></li>
+<li><a href="./interpreter/geode.html">Geode</a></li>
+<li><a href="./interpreter/groovy.html">Groovy</a></li>
+<li><a href="./interpreter/hbase.html">HBase</a></li>
+<li><a href="./interpreter/hdfs.html">HDFS</a></li>
+<li><a href="./interpreter/hive.html">Hive</a></li>
+<li><a href="./interpreter/ignite.html">Ignite</a></li>
+<li><a href="./interpreter/jdbc.html">JDBC</a></li>
+<li><a href="./interpreter/kylin.html">Kylin</a></li>
+<li><a href="./interpreter/lens.html">Lens</a></li>
+<li><a href="./interpreter/livy.html">Livy</a></li>
+<li><a href="./interpreter/mahout.html">Mahout</a></li>
+<li><a href="./interpreter/markdown.html">Markdown</a></li>
+<li><a href="./interpreter/neo4j.html">Neo4j</a></li>
+<li><a href="./interpreter/pig.html">Pig</a></li>
+<li><a href="./interpreter/postgresql.html">Postgresql, HAWQ</a></li>
+<li><a href="./interpreter/python.html">Python</a></li>
+<li><a href="./interpreter/r.html">R</a></li>
+<li><a href="./interpreter/sap.html">SAP</a></li>
+<li><a href="./interpreter/scalding.html">Scalding</a></li>
+<li><a href="./interpreter/scio.html">Scio</a></li>
+<li><a href="./interpreter/shell.html">Shell</a></li>
+<li><a href="./interpreter/spark.html">Spark</a></li>
+</ul>
+
+<h4>External Resources</h4>
+
+<ul>
+<li><a href="https://zeppelin.apache.org/community.html";>Mailing List</a></li>
+<li><a
href="https://cwiki.apache.org/confluence/display/ZEPPELIN/Zeppelin+Home";>Apache
Zeppelin Wiki</a></li>
+<li><a
href="http://stackoverflow.com/questions/tagged/apache-zeppelin";>Stackoverflow
Questions about Zeppelin (tag: <code>apache-zeppelin</code>)</a></li>
+</ul>
+
+ </div>
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