frostruan commented on PR #5514:
URL: https://github.com/apache/hbase/pull/5514#issuecomment-1807480366

   Thanks for reviewing Duo. Yes, the setStartStopRowForPrefixScan method works 
for prefix filtering, but it can not work for range filtering.  Maybe the title 
misunderstood you. What I want to introduce here, is like the query optimizer 
sub-system in RSBMS. It will optimize the scan range based on the filters that 
user sets. For example, if user want to scan data where rowkey > 'hhh' and 
rowkey < 'mmm', the optimizer can optimize start row to 'hhh' and stop row to 
'mmm'. Compare to the default start row and stop row, EMPTY_START_ROW and 
EMPTY_STOP_ROW, this will help speed up scan request.


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