yigress commented on PR #5355:
URL: https://github.com/apache/hive/pull/5355#issuecomment-2357140138

   > @yigress So for my implementation I just tried to match what Hive does in 
its existing implementation. If a sequential job wants to have different 
extensions for different tables, it can simply adjust the setting between HCat 
queries. Does Hive do something other than that to support that case that I 
missed?
   
   in hive the property is only used for text file format 
https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/Utilities.java#L916
   
   +1 for this useful feature, if a single job only loads into one table and 
the table format is known user can switch the values for the property between 
jobs.  I am not expert in pig, somehow I have the impression that one pig job 
can load into multiple tables simultaneously, then user needs to be careful 
about setting


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