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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218
11
章
Spark
アプリケーションのパッケージ化
spark-submit
コマンドは、舞台裏で
spark-class
スクリプトに呼び出しの内容を渡しま
す。そして
spark-class
スクリプトはローンチ用の
Java
アプリケーションを起動します。
興味をお持ちの方は、
Spark
の
GitHub
リポジトリを調べてみてください（
https://github.
com/apache/spark/blob/master/bin/spark-submit
）。
spark-submit
コマンドは、Spark がサポートしているさまざまなクラスタマネージャー（Mesos や
YARNなど）に対してアプリケーションをデプロイするための統一された APIを提供しているので、
ユーザーはアプリケーションの設定を環境ごとに調整せずに済みます。
大まかには、
spark-submit
の構文は次のようになっています。
spark-submit [options] <python file> [app arguments]
オプションについては、このあとすぐにすべて見ていきます。
app arguments
は 、アプ リケ ーショ
ンに渡したいパラメータ群です。
パラメータは、（
import sys
してから）
sys.arg v
でパースすることも、
Python
の
argparse
モジュールを利用して処理することもできます。
11.1.1
コマンドラインパラメータ
spark-submit
を使う場合、Sparkのエンジンには
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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.