November 2017
Beginner to intermediate
290 pages
7h 34m
English
book
Learning Apache Apex
by Ananth Gundabattula, Thomas Weise, Munagala V. Ramanath, David Yan, Kenneth Knowles
Content preview from Learning Apache Apex
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Pipelines, PTransforms, and PCollections
In Beam, you organize your processing into a directed graph called a pipeline. You may illustrate it something like this:
The boxes are parallel computations that are called PTransforms. Note how one of the boxes contains a small subgraph—almost all PTransforms are actually encapsulated subgraphs, including both Join and Filter. The arrows represent your data flowing from one PTransform to another as a PCollection. A PCollection can be bounded as with a classic static dataset like a massive collection of logs or a database snapshot. In this case, it is finite and you know it. However, a PCollection ...
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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.