Re: [I] [Proposal] Fixed-shard table sampling (druid)

["cryptoe (via GitHub)" <gi...@apache.org>]

cryptoe commented on issue #15140:
URL: https://github.com/apache/druid/issues/15140#issuecomment-1771172675

   @takaaki7 could you please clarify what `In normal sampling, ` means in the context of druid. 
   count distinct uses skectches and then merges the data across all the segments. Where does sampling come into play ?
   
   I do not understand the requirement of this feature as of now. Maybe if you could give some concrete usecases that would help clear my doubts.  
   


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