This post will help you get started using Apache Spark DataFrames with Scala on the MapR Sandbox. The new Spark DataFrames API is designed to make big data processing on tabular data easier. A Spark DataFrame is a distributed collection of data organized into named columns that provides operations to filter, group, or compute aggregates, and can be used with Spark SQL.
It's been almost twenty years that Gary Cornell contacted me to tell me “Cay, we're going to write a book on Java.” Those were simpler times. The Java 1.0 API had 211 classes/interfaces. And Unicode was a 16-bit code. ♦
SIP Servlet 2.0 makes it possible to use CDI with SIP Servlet applications. It supports SIP Servlet POJOs as component classes that qualify as CDI managed beans. It also defines SIP specific CDI beans and scope types. Lets explore each of them.
SIP Servlet POJOs qualify as CDI managed beans
GeekOut 2015 Summary
I last had the pleasure of visiting the lovely Baltic city of Tallinn in 2012, when I presented JSF 2.2 and the Rockstar talk at GeekOut 2012. Now that I've got something new (for me anyway) to talk about I made the cut and was invited back to present Servlet 4.0 at GeekOut 2015.
Recent Ripple of JSF Extensions
My colleague Manfred Riem tipped me off to a new framework built on JSF, ButterFaces. This whimsical name started an amusing Twitter thread, but also, and much more importantly brought several other new JSF extensions to light.
One of the joys of programming with a dynamic language such as Lisp or Python is the instant feedback you get from the interpreter. You try out a thing or two, something starts working, you move on to the next issue, and before you know it, your task is done. Technically, the program that reads and evaluates the language statements is called a REPL, for “read-evaluate-print loop”.
In an earlier post I wrote about Getting to Know the Developer Cloud Service. There wasn't an IDE used in that post and I'm a big fan of IDEs.
This tutorial will help you get started with Standalone Spark applications on the MapR Sandbox.