February 2017
Intermediate to advanced
274 pages
5h 58m
English
Content preview from Learning PySpark
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Introducing Structured Streaming
With Spark 2.0, the Apache Spark community is working on simplifying streaming by introducing the concept of structured streaming which bridges the concepts of streaming with Datasets/DataFrames (as noted in the following diagram):
As noted in earlier chapters on DataFrames, the execution of SQL and/or DataFrame queries within the Spark SQL Engine (and Catalyst Optimizer) revolves around building a logical plan, building numerous physical plans, the engine choosing the correct physical plan based on its cost optimizer, and then generating the code (i.e. code gen) that will deliver the results in a performant manner. ...
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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.