August 2015
Intermediate to advanced
312 pages
7h 28m
Japanese
Content preview from 初めてのSpark
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125
7.3 spark-submit によるアプリケーションのデプロイ
ソースを要求します。
4.
クラスタマネージャは、ドライバプログラムの代理としてエクゼキュータを起動します。
5.
ドライバプログラムは、ユーザーアプリケーションを実行します。このプログラム中の
RDD
のアクションや変換に基づき、ドライバはタスクという形で処理をエクゼキュータ
に送ります。
6.
エクゼキュータのプロセスでタスクが実行され、結果が計算され、保存されます。
7.
ドライバの
main()
メソッドが終了するか、
main()
メソッドから
SparkContext.stop()
が
呼ばれると、ドライバはエクゼキュータを終了させ、クラスタマネージャから取得したリ
ソースを解放します。
7.3
spark-submit
るアーンのデイ
すでに学んだ通り、
Spark
ではあらゆるクラスタマネージャへのジョブの投入を
spark-submit
というツール
1
つで行います。
2
では、
spark-submit
を使って
Python
のプログラムを投入する
簡単な例を見ました。
7-1
をご覧ください。
7-1
Python
ー
bin/spark-submit my_script.py
スクリプトもしくは
JAR
の名前だけが渡されて呼ばれた場合、
spark-submit
は渡された
Spark
のプログラムを、単にローカルモードで実行します。このプログラムを、
Spark
の
Standalone
ク
ラスタマネージャに投入したいとしましょう。その場合は ...
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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.