September 2016
Beginner to intermediate
326 pages
6h 47m
English
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Architecture of Spark SQL
Spark SQL is a library on top of the Spark core execution engine, as shown in Figure 4.2. It exposes SQL interfaces using JDBC/ODBC for Data Warehousing applications or through a command-line console for interactively executing queries. So, any Business Intelligence (BI) tools can connect to Spark SQL to perform analytics at memory speeds. It also exposes a Dataset API and DataFrame API, which are supported in Java, Scala, Python, and R. Spark SQL users can use the Data Source API to read and write data from and to a variety of sources to create a DataFrame or a Dataset. Figure 4.2 also indicates the traditional way of creating and operating on RDDs from programming languages to the Spark core engine.
Figure 4.2: Spark ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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