提起 Spark 调优,通常的目标都是如何让运行时间短,但最近看到一篇有趣的文章,它的调优目标却是如何让云服务费用越低,而做到了在保证不增加运行时间、不减少处理的数据的情况下,将云服务的费用降低了 60 %,很酷很新颖,来看看。
偶然发现Spark RDD 中的 sortBy
是个特殊的 transform 算子,它居然可以像 action 算子一样触发 job。 这是为什么呢?来了解了解。
Let’s start learning the PowerPhrases at Work. There has three parts:
Managing Your Boss
Communicating With Coworker
Magic Phrases for Managers
Effective Email
Maybe someone of you have heard about《PowerPhrases》which have another name called “The perfect words to Say it Right and Get the Results you want”.
Is it looks interesting for you ? let’s start read it.
Spark 3.0 已经release了,来看看有什么新东西。