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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 exceeds an empirically determined threshold before using an index.
The text was updated successfully, but these errors were encountered:
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 exceeds an empirically determined threshold before using an index.The text was updated successfully, but these errors were encountered: