可以在Apache Nifi中实现Hive连接吗？
[英]Can Hive Joins be implemented in Apache Nifi?
问题描述
I need to implement Hive Joins from Apache Nifi. 
我需要从Apache Nifi实现Hive Joins。
I found PutHiveQL , PutHiveStreaming and SelectHiveQL processors in Apache nifi, but was not able to find any use case regarding the Hive Joins implementation. 我在Apache nifi中找到了PutHiveQL ， PutHiveStreaming和SelectHiveQL处理器，但是无法找到有关Hive Joins实现的任何用例。
1 个解决方案
解决方案1
0 已采纳 2019-05-29 05:13:47
If you are looking to join queries in Hive, you can just use those processors as usual with your join query statements. 如果您希望在Hive中加入查询，则可以像使用连接查询语句一样使用这些处理器。
However, if you are looking to use different regular queries and then join them inside NiFi, I would find it rather difficult(but possible with MergeRecord or MergeContent ) because NiFi is not exactly built for joining queries. 但是，如果您希望使用不同的常规查询然后将它们加入NiFi中，我会发现它很难（但可能使用MergeRecord或MergeContent ），因为NiFi并非完全用于加入查询。
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