Spark Sql UDF引用外部数据
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详解Spark Sql在UDF中如何引用外部数据
目录前言场景介绍方法一 Driver端加载方法二 Excutor端加载小结前言 Spark Sql可以通过UDF来对DataFrame的Column进行自定义操作。在特定场景下定义UDF可能需要用到Spark Context以外的资源或数据。比如从List或Map中[详细]
2023-02-02 10:27 分类：开发 Stop Core Location updates then restart them with a timer
I was wondering if anyone could point me to (or paste in) some code to deal with turning off Core Location updates to save power开发者_JAVA百科.[详细]
2022-12-27 18:10 分类：问答Select Comment with xPath by Comment-Text
How can I select the next node after an defined comment? I know the text of the comment and need the next nodes.[详细]
2022-12-26 15:15 分类：问答Watermarking + Directshow filter
I want to put a watermark on my video. IS it possible to do with directshow filter. Want to overlap an image on video like channel logo. so that image will be fixed开发者_如何学JAVA when video is play[详细]
2022-12-25 14:04 分类：问答2021伏羲山大峡谷开放时间及门票交通？
说起伏羲山大峡谷景区，大家应该都知道前段时间因为疫情暂时关闭了。然而就在最近，疫情有所好转，伏羲山大峡谷景区正式重新开放。那么景区什么时候开放呢？让我们和边肖一起看看吧！[详细]
2022-12-25 11:07 分类：问答
加载中,请稍侯......