mjsax commented on PR #24020:
URL: https://github.com/apache/kafka/pull/24020#issuecomment-6528105943

   > is there ever a case where we'd want to use the partition from the record 
metadata? If yes then we'd check first if it's -1.
   > But I'm thinking it would end up being the same so I'm guessing not, just 
wanted to ask for confirmation.
   
   You are right. There is no such case. In the regular case, both should be 
the same (otherwise there is a bug). In the end, we want to encode the left 
hand side partition, to tell the right hand side where to send the response. So 
using `task().partition()` is always correct.


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