bowenli86 opened a new pull request #10857: [FLINK-15593][doc] add doc to 
remind users not using Hive aggregate f…
URL: https://github.com/apache/flink/pull/10857
 
 
   …unctions in streaming mode
   
   ## What is the purpose of the change
   
   Due to that Hive functions are all built for batch processing, aggregate 
functions in Hive that implement UDAF and GenericUDAFResolver2 interfaces may 
have unpredictable behaviors when used in streaming mode in Flink. We advice 
users to only use Hive aggregate functions interfaces in batch mode.
   
   ## Brief change log
   
   update doc
   
   ## Verifying this change
   
   This change is a trivial rework / code cleanup without any test coverage.
   
   ## Does this pull request potentially affect one of the following parts:
   
   n/a
   
   ## Documentation
   
   n/a

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