Val output= z.angular('output') val output0= z.angular('output0') When I change the first Line of the table and update 'fact' field, I can see the change in output0 variable but nothing happens with variable output. When Zeppelin launched its plant engineering business unit many years ago, everyone involved was clear that the venture would only prove successful if a no-holds-barred quality strategy was pursued. This led to the decision to manufacture our own key components for our systems. Reliability is the key. Basic Usage In addition to the backend Angular API to handle Angular objects binding, Apache Zeppelin also exposes a simple AngularJS z object on the front-end side to expose the same capabilities. This z object is accessible in the Angular isolated scope for each paragraph. Bind / Unbind Variables. Learn the latest Big Data Technology - Apache Zeppelin! And learn to use it with one of the most popular programming Data Visualization Tool! One of the most valuable technology skills is the ability to analyze huge data sets, and this course is specifically designed to bring you up to speed on one of the best technologies for this task, Apache. Later, you can fully utilize Angular or D3 in Zeppelin for better or more sophisticated visualization. Let's get 'Bank' data from the official Zeppelin tutorial. Next, define a case class for easy transformation into DataFrame and map the text data we downloaded into DataFrame without its header.
Introduction
Apache Zeppelin is a web-based notebook that enables interactive data analytics. With Zeppelin, you can make beautiful>InterpreterDescription%spark2Spark interpreter to run Spark 2.x code written in Scala%spark2.sqlSpark SQL interpreter (to execute SQL queries against temporary tables in Spark)%shShell interpreter to run shell commands like move files%angularAngular interpreter to run Angular and HTML code%mdMarkdown for displaying formatted text, links, and images
Note the % at the beginning of each interpreter. Each paragraph needs to start with % followed by the interpreter name. The image below showcases three interpreters, Markdown, Spark and Shell.
To create an interpreter in Zeppelin:
1. Click on anonymous which is located on the right hand side of the Zeppelin Welcome page
2. On the drop down select Interpreter
3. On the right hand corner of the Interpreters page you will see Create, click on it
This will bring up the Create new interpreter option. We will use the shell interpreter as an example.
4. Type sh in the Interpreter Name box
5. Type sh in the Interpreter Group as well
6. Click on Save
Once you are done creating the interpreter you need to bind it to the notebook you will be using it in. The next section will cover how to bind the interpreter into a notebook.
Binding an Interpreter
To bind the interpreter you just created you need to reopen the notebook you want to bind your new interpreter in.
1. Click on the gear at the top right side of your Zeppelin Notebook. Note that when you click on that gear it says Interpreter binding
The settings section appears and you can see your newly created interpreter, in our case the shell interpreter sh.
2. Click on the interpreter and it will change from white to blue.
3. Click on Save
Your new shell interpreter is ready to be put to use.
Exporting a Notebook
To export a notebook that you have been working on you can do so by simply going top of the notebook you are working on.
1. Click the download icon shown in the image below:
This will download the notebook as a JSON file into your local computer.
Importing External Libraries
As you explore Zeppelin you will probably want to use one or more external libraries. For example, to run Magellan you need to import its dependencies; you will need to include the Magellan library in your environment. There are three ways to include an external dependency in a Zeppelin notebook:
Zeppelin Angular Download
1.Using the %dep interpreter (Note: This will only work for libraries that are published to Maven.)
2. Using the %spark2 interpreter
3. Using the import statement
Zeppelin Angular
Here is an example that imports the dependency for Magellan using %dep interpreter:
Summary
Congratulations! You now know the basic functionalities of Zeppelin. Now you can create, import, delete and run a Zeppelin Notebook. Additionally, you know how to create and bind an interpreter, export a notebook and import external libraries.
![Zeplin Angular Zeplin Angular](/uploads/1/1/8/6/118668087/845582097.png)
We hope that we’ve got you interested and excited enough to further explore Spark with Zeppelin.Make sure to checkout other tutorials for more in-depth examples of the Spark SQL module, as well as other Spark modules used for Streaming and/or Machine Learning tasks. We also have a very useful Data Science Starter Kit with pre-selected videos, tutorials, and white papers.