August 2015
Intermediate to advanced
312 pages
7h 28m
Japanese
Content preview from 初めてのSpark
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.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.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.
190
10 章 Spark Streaming
タのみです
†
。本章は
Java
と
Scala
に焦点を当て、すべての
API
を紹介しますが、同様の概念は
Python
にも当てはまります。
10.1
ンルな
Spark Streaming
の詳細に入っていく前に、シンプルな例を考えてみましょう。ポート
7777
で
動作しているサーバーから、改行区切りのテキストのストリームを受信するものとします。このス
トリームにフィルタをかけて、
error
という単語を含む行だけを出力します。
Spark Streaming
のプログラムをもっともうまく動作させられる形式は、
Maven
もしくは
sbt
でビルドされたスタンドアローンアプリケーションです。
Spark Streaming
は
Spark
の一部では
ありますが、個別の
Maven
の成果物としてリリースされており、プロジェクトにはいくつかのモ
ジュールを追加でインポートしたほうが良いでしょう。これについては、
10-1
から
10-3
を参照してください。
10-1
Spark Streaming
Maven
groupId = org.apache.spark
artifactId = spark-streaming_2.10
version = 1.4.0
10-2
Scala
streaming
ー
import org.apache.spark.streaming.StreamingContext
import org.apache.spark.streaming.StreamingContext._ ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.