a2l007 commented on issue #11944:
URL: https://github.com/apache/druid/issues/11944#issuecomment-974382299


   What is your average segment size at the moment and how many rows per 
segment does it have on an average? If there are multiple sketch fields with 
atleast 8k in size, 13M rows per segment can create very large segments which 
might not be the goal. 
   You could always throw more heap at the compaction tasks proportional to the 
total segment size it is trying to compact but it would be useful to first 
estimate how big of a segment would 13M rows create and if this estimated size 
is within the recommended size for segments.


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