Rich-T-kid opened a new issue, #24117: URL: https://github.com/apache/datafusion/issues/24117
### Is your feature request related to a problem or challenge? Even with good stats available, there's no optimizer rule that uses them to decide whether a string column should be dictionary-encoded. ### Describe the solution you'd like Add a physical plan optimization pass that looks at column statistics (NDV, aggregation heaviness) as well as user-defined flags/thresholds, and decides whether to encode a given string column as a dictionary array. Will need extensive testing and benchmarking to decide whether this should be enabled by default. ### Describe alternatives you've considered Final piece of : #22891 part of epic : #24111 ### Additional context _No response_ -- 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]
