agavra commented on issue #9959:
URL: https://github.com/apache/pinot/issues/9959#issuecomment-1346932947

   I think this might be related to the threading model - I just realized that 
for joins the notification system might be problematic, imagine the following:
   
   1. you get a notification that the probe table has data available and EOS
   2. the join operator is scheduled, but the broadcast table is incomplete so 
nothing happens
   3. the broadcast table completes
   4. !!! the join is never scheduled again because we already "used" the 
notification for (1)
   
   #9934 will fix this in an unideal way,I'll think of how to fix this.


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