November 2017
Intermediate to advanced
328 pages
6h 51m
Japanese
Content preview from 入門 PySpark ―PythonとJupyterで活用するSpark 2エコシステム
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10
章
Structured Streaming
197
10
章
Structured Streaming
本章では、まず Spark Streaming の背景にある概念と、それがどのようにStructured Streamingに
なっていったのかを紹介します。Structured Streamingにおいて重要なことの1つは、それが Spark
のDataFrameを活用しているということです。このパラダイムの転換のおかげで、Python の開発者に
とって Spark Streamingを扱うことが容易になったのです。
本章で学ぶことは次のとおりです。
●
Spark Streamingとは何か？
●
Spark Streaming に必要なもの
●
Spark Streaming のアプリケーションデータフロー
●
DStreamを利用したシンプルなストリーミングアプリケーション
●
Spark Streaming のグローバル集計機能の入門
●
Structured Streamingの紹介
注意していただきたいのは、本章の最初のセクションではサンプルコードが Scalaで書かれているこ
と で す 。こ れ は 、Spark Streamingのほとんどのコードが Scala で書かれているためです。Python のサ
ンプルは、Structured Streamingを扱い始めるところから登場します。
10.1
Spark Streaming
とは 何 か？
Spark Streaming ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.