Added: zeppelin/site/docs/0.8.2/interpreter/groovy.html
URL:
http://svn.apache.org/viewvc/zeppelin/site/docs/0.8.2/interpreter/groovy.html?rev=1867691&view=auto
==============================================================================
--- zeppelin/site/docs/0.8.2/interpreter/groovy.html (added)
+++ zeppelin/site/docs/0.8.2/interpreter/groovy.html Sun Sep 29 07:08:10 2019
@@ -0,0 +1,412 @@
+
+<!DOCTYPE html>
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+ <title>Apache Zeppelin 0.8.0 Documentation: Apache Groovy Interpreter for
Apache Zeppelin</title>
+ <meta name="description" content="Apache Groovy is a powerful, optionally
typed and dynamic language, with static-typing and static compilation
capabilities, for the Java platform aimed at improving developer productivity
thanks to a concise, familiar and easy to learn syntax.">
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href="/docs/0.8.0/setup/storage/storage.html#notebook-storage-in-local-git-repository">Git
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Shooting</a></li>
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class="dropdown-toggle">Interpreter <b class="caret"></b></a>
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+ <li class="title"><span>Interpreters</span></li>
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href="/docs/0.8.0/usage/interpreter/overview.html">Overview</a></li>
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+ <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>
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+ <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>
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auto;">
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+ <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>
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+ <li><a target="_blank" href="">Stackoverflow Questions about
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+ </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 Apache Groovy Interpreter for Apache Zeppelin">
+ <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>Groovy Interpreter for Apache Zeppelin</h1>
+
+<h3>Samples</h3>
+<div class="highlight"><pre><code class="language-groovy"
data-lang="groovy"><span></span><span class="o">%</span><span
class="n">groovy</span>
+<span class="c1">//get a parameter defined as
z.angularBind('ngSearchParam', value, 'paragraph_id')</span>
+<span class="c1">//g is a context object for groovy to avoid mix with z
object</span>
+<span class="kt">def</span> <span class="n">param</span> <span
class="o">=</span> <span class="n">g</span><span class="o">.</span><span
class="na">angular</span><span class="o">(</span><span
class="s1">'ngSearchParam'</span><span class="o">)</span>
+<span class="c1">//send request
https://www.googleapis.com/customsearch/v1?q=ngSearchParam_value</span>
+<span class="kt">def</span> <span class="n">r</span> <span class="o">=</span>
<span class="n">HTTP</span><span class="o">.</span><span
class="na">get</span><span class="o">(</span>
+ <span class="c1">//assume you defined the groovy interpreter property</span>
+ <span class="c1">//
`search_baseurl`='https://www.googleapis.com/customsearch/v1'</span>
+ <span class="c1">//in groovy object o.getProperty('A') ==
o.'A' == o.A == o['A']</span>
+ <span class="n">url</span> <span class="o">:</span> <span
class="n">g</span><span class="o">.</span><span
class="na">search_baseurl</span><span class="o">,</span>
+ <span class="nl">query:</span> <span class="o">[</span> <span
class="nl">q:</span> <span class="n">param</span> <span class="o">],</span>
+ <span class="nl">headers:</span> <span class="o">[</span>
+ <span class="s1">'Accept'</span><span class="o">:</span><span
class="s1">'application/json'</span><span class="o">,</span>
+ <span class="c1">//'Authorization:' :
g.getProperty('search_auth'),</span>
+ <span class="o">],</span>
+ <span class="n">ssl</span> <span class="o">:</span> <span
class="n">g</span><span class="o">.</span><span
class="na">getProperty</span><span class="o">(</span><span
class="s1">'search_ssl'</span><span class="o">)</span> <span
class="c1">// assume groovy interpreter property search_ssl =
HTTP.getNaiveSSLContext()</span>
+<span class="o">)</span>
+<span class="c1">//check response code</span>
+<span class="k">if</span><span class="o">(</span> <span
class="n">r</span><span class="o">.</span><span class="na">response</span><span
class="o">.</span><span class="na">code</span><span class="o">==</span><span
class="mi">200</span> <span class="o">)</span> <span class="o">{</span>
+ <span class="n">g</span><span class="o">.</span><span
class="na">html</span><span class="o">().</span><span
class="na">with</span><span class="o">{</span>
+ <span class="c1">//g.html() renders %angular to output and returns
groovy.xml.MarkupBuilder</span>
+ <span class="n">h2</span><span class="o">(</span><span
class="s2">"the response ${r.response.code}"</span><span
class="o">)</span>
+ <span class="n">span</span><span class="o">(</span> <span
class="n">r</span><span class="o">.</span><span class="na">response</span><span
class="o">.</span><span class="na">body</span> <span class="o">)</span>
+ <span class="n">h2</span><span class="o">(</span><span
class="s2">"headers"</span><span class="o">)</span>
+ <span class="n">pre</span><span class="o">(</span> <span
class="n">r</span><span class="o">.</span><span class="na">response</span><span
class="o">.</span><span class="na">headers</span><span class="o">.</span><span
class="na">join</span><span class="o">(</span><span
class="s1">'\n'</span><span class="o">)</span> <span class="o">)</span>
+ <span class="o">}</span>
+<span class="o">}</span> <span class="k">else</span> <span class="o">{</span>
+ <span class="c1">//just to show that it's possible to use println with
multiline groovy string to render output</span>
+ <span class="n">println</span><span class="o">(</span><span
class="s2">"""%angular</span>
+<span class="s2"> <script> alert ("code=${r.response.code} \n
msg=${r.response.message}") </script></span>
+<span class="s2"> """</span><span class="o">)</span>
+<span class="o">}</span>
+</code></pre></div><div class="highlight"><pre><code class="language-groovy"
data-lang="groovy"><span></span><span class="o">%</span><span
class="n">groovy</span>
+
+<span class="c1">//renders a table with headers a, b, c and two rows</span>
+<span class="n">g</span><span class="o">.</span><span
class="na">table</span><span class="o">(</span>
+ <span class="o">[</span>
+ <span class="o">[</span><span class="s1">'a'</span><span
class="o">,</span><span class="s1">'b'</span><span
class="o">,</span><span class="s1">'c'</span><span class="o">],</span>
+ <span class="o">[</span><span class="s1">'a1'</span><span
class="o">,</span><span class="s1">'b1'</span><span
class="o">,</span><span class="s1">'c1'</span><span class="o">],</span>
+ <span class="o">[</span><span class="s1">'a2'</span><span
class="o">,</span><span class="s1">'b2'</span><span
class="o">,</span><span class="s1">'c2'</span><span class="o">],</span>
+ <span class="o">]</span>
+<span class="o">)</span>
+</code></pre></div>
+<h3>the <code>g</code> object</h3>
+
+<ul>
+<li><code>g.angular(String name)</code></li>
+</ul>
+
+<p>Returns angular object by name. Look up notebook scope first and then
global scope.</p>
+
+<ul>
+<li><code>g.angularBind(String name, Object value)</code></li>
+</ul>
+
+<p>Assign a new <code>value</code> into angular object <code>name</code></p>
+
+<ul>
+<li><code>java.util.Properties g.getProperties()</code></li>
+</ul>
+
+<p>returns all properties defined for this interpreter</p>
+
+<ul>
+<li><code>String g.getProperty('PROPERTY_NAME')</code> </li>
+</ul>
+<div class="highlight"><pre><code class="language-groovy"
data-lang="groovy"><span></span> <span class="n">g</span><span
class="o">.</span><span class="na">PROPERTY_NAME</span>
+ <span class="n">g</span><span class="o">.</span><span
class="s1">'PROPERTY_NAME'</span>
+ <span class="n">g</span><span class="o">[</span><span
class="s1">'PROPERTY_NAME'</span><span class="o">]</span>
+ <span class="n">g</span><span class="o">.</span><span
class="na">getProperties</span><span class="o">().</span><span
class="na">getProperty</span><span class="o">(</span><span
class="s1">'PROPERTY_NAME'</span><span class="o">)</span>
+</code></pre></div>
+<p>All above the accessor to named property defined in groovy interpreter.
+ In this case with name <code>PROPERTY_NAME</code></p>
+
+<ul>
+<li><code>groovy.xml.MarkupBuilder g.html()</code></li>
+</ul>
+
+<p>Starts or continues rendering of <code>%angular</code> to output and
returns <a
href="http://groovy-lang.org/processing-xml.html#_markupbuilder";>groovy.xml.MarkupBuilder</a>
+ MarkupBuilder is usefull to generate html (xml)</p>
+
+<ul>
+<li><code>void g.table(obj)</code></li>
+</ul>
+
+<p>starts or continues rendering table rows.</p>
+
+<p>obj: List(rows) of List(columns) where first line is a header </p>
+
+<ul>
+<li><code>g.input(name, value )</code></li>
+</ul>
+
+<p>Creates <code>text</code> input with value specified. The parameter
<code>value</code> is optional.</p>
+
+<ul>
+<li><code>g.select(name, default, Map<Object, String>
options)</code></li>
+</ul>
+
+<p>Creates <code>select</code> input with defined options. The parameter
<code>default</code> is optional.</p>
+
+<p><code>g.select('sex', 'm', ['m':'man',
'w':'woman'])</code></p>
+
+<ul>
+<li><code>g.checkbox(name, Collection checked, Map<Object, String>
options)</code></li>
+</ul>
+
+<p>Creates <code>checkbox</code> input.</p>
+
+<ul>
+<li><code>g.get(name, default)</code></li>
+</ul>
+
+<p>Returns interpreter-based variable. Visibility depends on interpreter
scope. The parameter <code>default</code> is optional.</p>
+
+<ul>
+<li><code>g.put(name, value)</code></li>
+</ul>
+
+<p>Stores new value into interpreter-based variable. Visibility depends on
interpreter scope.</p>
+
+ </div>
+</div>
+
+
+ <hr>
+ <footer>
+ <!-- <p>© 2019 The Apache Software Foundation</p>-->
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+
Propchange: zeppelin/site/docs/0.8.2/interpreter/groovy.html
------------------------------------------------------------------------------
svn:executable = *
Added: zeppelin/site/docs/0.8.2/interpreter/hbase.html
URL:
http://svn.apache.org/viewvc/zeppelin/site/docs/0.8.2/interpreter/hbase.html?rev=1867691&view=auto
==============================================================================
--- zeppelin/site/docs/0.8.2/interpreter/hbase.html (added)
+++ zeppelin/site/docs/0.8.2/interpreter/hbase.html Sun Sep 29 07:08:10 2019
@@ -0,0 +1,366 @@
+
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+ <title>Apache Zeppelin 0.8.0 Documentation: HBase Shell Interpreter for
Apache Zeppelin</title>
+ <meta name="description" content="HBase Shell is a JRuby IRB client for
Apache HBase. This interpreter provides all capabilities of Apache HBase shell
within Apache Zeppelin.">
+ <meta name="author" content="The Apache Software Foundation">
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+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Interpreter</span></li>
+ <li><a
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Management</a></li>
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+ <!--<li><a
href="/docs/0.8.0/usage/interpreter/dynamic_loading.html">Dynamic Interpreter
Loading (Experimental)</a></li>-->
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(Experimental)</a></li>
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+ <li class="title"><span>Other Features</span></li>
+ <li><a
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Zeppelin Homepage</a></li>
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+ <li class="title"><span>REST API</span></li>
+ <li><a
href="/docs/0.8.0/usage/rest_api/interpreter.html">Interpreter API</a></li>
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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>
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to Build Zeppelin</a></li>
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href="/docs/0.8.0/setup/basics/multi_user_support.html">Multi-user
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+ </ul>
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+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>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="language-bash"
data-lang="bash"><span></span><span class="c1"># HBase 1.1.4</span>
+mvn clean package -DskipTests -Phadoop-2.6 -Dhadoop.version<span
class="o">=</span><span class="m">2</span>.6.0 -P build-distr
-Dhbase.hbase.version<span class="o">=</span><span class="m">1</span>.1.4
-Dhbase.hadoop.version<span class="o">=</span><span class="m">2</span>.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="language-bash"
data-lang="bash"><span></span><span class="c1"># HBase 1.2.0</span>
+mvn clean package -DskipTests -Phadoop-2.6 -Dhadoop.version<span
class="o">=</span><span class="m">2</span>.6.0 -P build-distr
-Dhbase.hbase.version<span class="o">=</span><span class="m">1</span>.2.0
-Dhbase.hadoop.version<span class="o">=</span><span class="m">2</span>.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 <code>conf/zeppelin-env.sh</code>, 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="language-bash"
data-lang="bash"><span></span><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="language-bash"
data-lang="bash"><span></span><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="language-bash"
data-lang="bash"><span></span>%hbase
+<span class="nb">help</span>
+</code></pre></div>
+<p>For example, to create a table</p>
+<div class="highlight"><pre><code class="language-bash"
data-lang="bash"><span></span>%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="language-bash"
data-lang="bash"><span></span>%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>
+
+ </div>
+</div>
+
+
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+++ zeppelin/site/docs/0.8.2/interpreter/hdfs.html Sun Sep 29 07:08:10 2019
@@ -0,0 +1,346 @@
+
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+ <title>Apache Zeppelin 0.8.0 Documentation: HDFS File System Interpreter
for Apache Zeppelin</title>
+ <meta name="description" content="Hadoop File System is a distributed,
fault tolerant file system part of the hadoop project and is often used as
storage for distributed processing engines like Hadoop MapReduce and Apache
Spark or underlying file systems like Alluxio.">
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+
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+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Interpreter</span></li>
+ <li><a
href="/docs/0.8.0/usage/interpreter/overview.html">Overview</a></li>
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Management</a></li>
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Interpreters</a></li>
+ <!--<li><a
href="/docs/0.8.0/usage/interpreter/dynamic_loading.html">Dynamic Interpreter
Loading (Experimental)</a></li>-->
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href="/docs/0.8.0/usage/interpreter/execution_hooks.html">Execution Hooks
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+ <li role="separator" class="divider"></li>
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+ <li class="title"><span>REST API</span></li>
+ <li><a
href="/docs/0.8.0/usage/rest_api/interpreter.html">Interpreter API</a></li>
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+ </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
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href="/docs/0.8.0/setup/deployment/docker.html">Docker Image for
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on CDH</a></li>
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+ <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
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+ <li role="separator" class="divider"></li>
+ <li class="title"><span>Notebook Storage</span></li>
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+ </ul>
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class="dropdown-toggle">Interpreter <b class="caret"></b></a>
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+ <li><a
href="/docs/0.8.0/interpreter/postgresql.html">Postgresql, HAWQ</a></li>
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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>
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Application</a></li>
+ <li><a
href="/docs/0.8.0/development/helium/writing_spell.html">Writing Helium
Spell</a></li>
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href="/docs/0.8.0/development/helium/writing_visualization_basic.html">Writing
Helium Visualization: Basics</a></li>
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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>
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+<!--<div class="hero-unit HDFS File System Interpreter for Apache Zeppelin">
+ <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>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="language-bash"
data-lang="bash"><span></span>$> curl <span
class="s2">"http://localhost:50070/webhdfs/v1/?op=LISTSTATUS"</span>
+</code></pre></div>
+ </div>
+</div>
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