November 2024
Intermediate to advanced
606 pages
17h 8m
French
Content preview from Spark : Le guide définitif
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Chapitre 16. Développer des applications Spark
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Au chapitre 15, tu as appris comment Spark exécute ton code sur le cluster. Nous allons maintenant te montrer à quel point il est facile de développer une application Spark autonome et de la déployer sur un cluster. Nous allons le faire à l'aide d'un modèle simple qui partage quelques conseils faciles sur la façon de structurer tes applications, y compris la mise en place d'outils de construction et de tests unitaires. Ce modèle est disponible dans le dépôt de code du livre. Ce modèle n'est pas vraiment nécessaire, car il n'est pas difficile d'écrire des applications à partir de zéro, mais il est utile. Commençons par notre première application.
Rédaction d'applications Spark
Spark Les applications sont la combinaison de deux choses : un cluster Spark et ton code. Dans ce cas, le cluster sera en mode local et l'application sera une application prédéfinie. Passons en revue une application dans chaque langue.
Une application simple basée sur Scala
Scala est le langage "natif" de Spark et permet naturellement d'écrire des applications. Ce n'est vraiment pas différent de l'écriture d'une application Scala.
Astuce
Scala peut sembler intimidant, selon ton parcours, mais cela vaut la peine de l'apprendre, ne serait-ce que pour comprendre un peu mieux Spark. En outre, tu n'as pas besoin d'apprendre tous les ...
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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.