mapshen commented on issue #7849:
URL: https://github.com/apache/pinot/issues/7849#issuecomment-985663760


   @yupeng9 As discussed in Slack, after patching #7844 and #7860,  the 
off-by-one rate has dropped from 50% to 2% during a test with 3000 repeated 
queries of `select count(1) from <table>` before and after. However, the bad 
news is that it’s not down to zero yet. Any idea on what else we should look at?
   
   Regarding case 3, Trino perhaps needs to perform deduplication when querying 
multiple `validDocsIndex`.


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