November 2024
Intermediate to advanced
606 pages
17h 8m
French
Content preview from Spark : Le guide définitif
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Chapitre 18. Surveillance et débogage
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Ce chapitre couvre les principaux détails dont tu as besoin pour surveiller et déboguer tes applications Spark. Pour ce faire, nous allons parcourir l'interface utilisateur de Spark avec un exemple de requête conçu pour t'aider à comprendre comment tracer tes propres jobs à travers le cycle de vie de l'exécution. L'exemple que nous allons examiner t'aidera également à comprendre comment déboguer tes jobs et où les erreurs sont susceptibles de se produire.
Le paysage de la surveillance
À un moment donné, tu auras besoin de surveiller tes travaux Spark pour comprendre où se situent les problèmes qu'ils rencontrent. Cela vaut la peine de passer en revue les différentes choses que nous pouvons réellement surveiller et d'exposer certaines des options permettant de le faire. Passons en revue les composants que nous pouvons surveiller (voir Figure 18-1).
- Applications et emplois Spark
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La première chose que tu voudras commencer à surveiller, que ce soit pour déboguer ou simplement pour mieux comprendre comment ton application s'exécute par rapport au cluster, c'est l'interface utilisateur de Spark et les journaux de Spark. Ceux-ci rapportent des informations sur les applications en cours d'exécution au niveau des concepts de Spark, tels que les RDD et les plans de requête. Nous parlons en détail de l'utilisation de ces ...
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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.