mapshen commented on issue #7849:
URL: https://github.com/apache/pinot/issues/7849#issuecomment-1097289988

   > @tuor713 I see the routing issue now. On a single server, it can have up 
to one consuming segment per partition; but on multiple servers serving the 
same segment, they might not finish sealing the segment at the same time. On 
the broker side, it might show as multiple consuming segments. The routing fix 
in your commit can solve the inconsistency, but might also cause hotspot server 
because all the queries will be routed to the servers which finish the segment 
sealing first. To address this, one solution would be to also enhance the 
instance selector so that it queries the consuming segment on a server only 
when the server is picked to serve the last completed segment.
   
   There are more issues to the current design on segment replicas. Like I 
mentioned in https://github.com/apache/pinot/issues/7850, no only is it 
problematic during a segment flush, it also leads to split query views when one 
replica goes down.


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