syed72 opened a new issue #6970:
URL: https://github.com/apache/incubator-pinot/issues/6970


   Hi,
   There is usecase, where need to Increase the latency of a query which has 
ATIME as sorted column in a pinot table when ORDER BY ATIME DESC  limit 100 is 
applied.
   
   I've a select query which has ORDER BY ATIME ASC limit 100 is applied , then 
the the time taken for query is barely 15ms, (total rows - 450M, segments- 290, 
numOfDocsScanned - 318), where as for ORDER BY ATIME DESC limit 100 is taking 
around (timetaken -200ms, numDocsScanned - 5744955), which is very high, as it 
is reading whole segment.
   
   Please provide a support reading the segment from bottom in this case, which 
can reduce the timetaken and numOfDocsScanned...
   
   Thanks
   Akram Syed


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