September 2017
Beginner to intermediate
360 pages
8h 13m
English
book
Practical Real-time Data Processing and Analytics
by Shilpi Saxena, Selva raj Ramasamy, Prateek Bhati, Saurabh Gupta
Content preview from Practical Real-time Data Processing and Analytics
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Spark Streaming APIs
All Spark Streaming classes are packaged in the org.apache.spark.streaming.* package. Spark Streaming defines two core classes which also provide access to all Spark Streaming functionality, such as StreamingContext.scala and DStream.scala.
Let's examine the following functions and roles performed by these classes:
- org.apache.spark.streaming.StreamingContext: This is an entry point to Spark Streaming functionality. It defines methods for creating the objects of DStream.scala and also for starting and stopping the Spark Streaming jobs.
- org.apache.spark.streaming.dstream.DStream.scala: DStreams, or discretized streams, provide the basic abstraction for Spark Streaming. They provide the sequence of RDDs created from the ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.