[GitHub] [pinot] richardstartin opened a new issue #7600: Apply cardinality thresholds before using indexes

[GitBox <gi...@apache.org>]

richardstartin opened a new issue #7600:
URL: https://github.com/apache/pinot/issues/7600


   `AndDocIdSet` evaluates sorted indexes, then bitmap indexes, and then scans, on the basis that these operators have increasing cost, but after any one of these stages it may be faster to skip indexes and go straight to scanning. This can be determined by checking the cardinality of the matching documents bitmap before using an index.


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