alamb opened a new issue, #10580: URL: https://github.com/apache/datafusion/issues/10580
### Is your feature request related to a problem or challenge? It is common in databases and other analytic system to have additional external "indexes" (perhaps stored in the "metadata catalog", perhaps stored alongside the data files, perhaps embedded in the files, perhaps elsewhere) These indexes are used to speed up queries by "pruning": specifically evaluating a predicate on the index and then only reading the portions of files that would pass the filters in the query. In https://github.com/apache/datafusion/issues/10546 we showed how to create a index for entire files. I would also like to create an example of how to create such an index for row groups within a file (showing how to read it without re-reading the metadata each time) To complete this example, I think we need: 1. The API from @NGA-TRAN in https://github.com/apache/datafusion/issues/10453 2. The API described in https://github.com/apache/datafusion/issues/9929 ### Describe the solution you'd like _No response_ ### Describe alternatives you've considered _No response_ ### Additional context This is a follow on to https://github.com/apache/datafusion/issues/10546 -- 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]
