coderfender commented on PR #21456: URL: https://github.com/apache/datafusion/pull/21456#issuecomment-4226357748
@alamb , we added bitmaps for only 8 and 16 bit datatypes . The benchmarks show a 25 x speedup compared to main ``` count_distinct i16 bitmap 1.00 3.1±0.14µs ? ?/sec 25.35 77.9±3.43µs ? ?/sec count_distinct i8 bitmap 1.00 2.9±0.43µs ? ?/sec 5.75 16.4±0.26µs ? ?/sec count_distinct u16 bitmap 1.00 3.2±0.30µs ? ?/sec 24.08 77.7±1.82µs ? ?/sec count_distinct u8 bitmap 1.00 2.1±0.03µs ? ?/sec 8.14 16.8±0.05µs ? ?/sec ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
