manuzhang commented on PR #27924: URL: https://github.com/apache/spark/pull/27924#issuecomment-1139324269
@cloud-fan @wzhfy I'm wondering whether bucketed scan with `UnknownPartitioning` is valid. As I understand it, bucketed scan has two effects 1. decides how we partition input files 2. benefits downstream operators (e.g. bucket join) When 2 is not effective, we may still make use of 1. For example, we can have a bounded number of `FilePartition`, which could blow up driver memory without bucketed scan. Or is there a correctness issue I've missed? -- 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]
