lirui-apache opened a new issue, #15291: URL: https://github.com/apache/iceberg/issues/15291
### Feature Request / Improvement When rewriting manifests using the Spark action, we range shuffle the entries by `data_file.partition`. This can cause insufficient parallelism when partition cardinality is low, e.g. lots of files in a single partition. I wonder whether it makes sense to add `data_file.file_path` as a secondary range column. It serves as salt to get us enough parallelism, while maintains clustering effect of the partition fields. ### Query engine Spark ### Willingness to contribute - [x] I can contribute this improvement/feature independently - [x] I would be willing to contribute this improvement/feature with guidance from the Iceberg community - [ ] I cannot contribute this improvement/feature at this time -- 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]
