curcur commented on pull request #11725:
URL: https://github.com/apache/flink/pull/11725#issuecomment-629650067


   Hey @AHeise , thank you so much again!
   
   I believe I've addressed most of the minor issues mentioned in the previous 
reviews. Please remind me if I miss anything but for the one "extracted this 
inside of the for loop". I've left an offline msg to you to explain why I think 
it is better not to do it right now.
   
   FLINK-17307 changes the KafkaFetcher to emit the output in batch (once 
collector per partition), but mine is using once per record (emitting record 
and watermark in a different way).
   
   You can see they have logical differences. It might worth changing to batch 
emit as well, but might be two collectors, one for watermarks and the other one 
for records.
   
   I am not saying the change is difficult, but I am learning to be 
conservative right now and I've already listed it as a follow-up: 
https://issues.apache.org/jira/browse/FLINK-15670.
   
   What do you think?
   
   I am going to work on the Java docs for the public API now. If you have any 
comments on the code, please let me know. 


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