emkornfield commented on PR #18526: URL: https://github.com/apache/iceberg/pull/18526#issuecomment-6204321605
> both are stored as a long field. why would there be any storage size difference? are you thinking about compression? yes compression, or more specifically encoding. Delta binary packed would likely do better with milliseconds. Take for example millisecond values: `[1, 2, 4]`-> `1 [1, 2]`, after frame of reference subtraction (-1) the vector part would `[0, 1]` so would require 1 bit per value. vs microseconds: `[1000, 2000, 4000]`->`1000 [1000, 2000]`, after frame of reference subtraction (-1000) the vector part would be `[0, 1000]` required 10 bits per value. -- 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]
