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sophiesun333 code-cookie welldo2017 zrn6640 wangmiao1002 ainidefang gloryjin yiming1012 fxfng echohlne tokings jtiag skyfirezju chixiaopao guochao521 mjp27258 miaokf tiancy-space beatlakers hellozepp andrewyang9112 wugeer wanderingcodes2023 duyong6380 meet-alfie cnlittledonkeypotatoes's Issues
怎么预测一个spark任务所需要的内存的量呢?
我希望针对一个spark任务,或者一个spark sql,预测它正确执行所需要的内存的量,来设置执行参数,不知道怎么分析,麻烦给点思路,谢谢
df或ds的stage划分问题
老师,最早使用RDD写Spark的程序时,可以明确的推算出具体哪个算子属于哪个Job的哪个Stage,在遇到一些异常或性能问题的时候,也可以很轻松找到具体是哪一部分代码的问题。
但是使用了DafaFrame或DataSet,以及写SQL的情况下,因为有各种优化及代码生成,导致实际上的stage划分让人很懵逼,对于这个问题,您怎么看?
下一部是源码精进,请问要如何开始
老师的课很不错,读了好几遍了,还做了分享。
下一部想进一步深入源码,请问老师要怎么精进呢?
如果老师还想开一门课,建议是源码课。
但这个过程会有点长,或者老师能先给我们拎一下,把28节课每节课要看的源码给我们先说一下吗?
机器学习需要掌握的技能
想请教下老师,在机器学习方向,对 Spark 源码,计算机原理,数据结构与算法,计算机网络这类常用的工程类知识有要求么?还是只需要掌握相关数学知识,并拥有一定的工程能力即可?
Delta Lake —— 老师有对 Delta Lake 做过一些研究么?
目前 Delta Lake、Hudi、Iceberg 都很火,老师对这部分有了解么?
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