comphead commented on issue #3882: URL: https://github.com/apache/datafusion-comet/issues/3882#issuecomment-4215425501
> Switch to IPC stream format so that schema is encoded once per partition rather than once per block. this should be helpful for nested schemas use case, currently we can see shuffle write size is 1.5x larger in Comet comparing to Spark, maybe because of excessive schema encodings, and depending on the data and block size, sometimes schema can be even larger than data -- 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]
