mjsax commented on PR #15689:
URL: https://github.com/apache/kafka/pull/15689#issuecomment-2084338816

   Thanks for the PR @florin-akermann. I agree with @AyoubOm that both 
statements you intend to remove are still correct? Seems the stream-stream join 
section did not talk about null-keys and thus left/outer join do not need an 
update? Might be worth to update the stream-stream inner join row, to point out 
that null-key records are dropped?
   
   I also just checked FK-left join, and it still says (this statement is 
missing for inner-join though):
   > Records for which the foreignKeyExtractor produces null are ignored and do 
not trigger a join. If you want to join with null foreign keys, use a suitable 
sentinel value to do so (i.e. "NULL" for a String field, or -1 for an 
auto-incrementing integer field).
   
   It seems https://github.com/apache/kafka/pull/14107 remove it incorrectly 
for inner join instead of left join?
   
   Might be worth to go over the docs once more to double check (I made a pass, 
but might have missed something).
   


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org

For queries about this service, please contact Infrastructure at:
us...@infra.apache.org

Reply via email to