RussellSpitzer opened a new issue, #6679: URL: https://github.com/apache/iceberg/issues/6679
### Feature Request / Improvement Merge Writes as well as some inserts end up generating many files with our default write distirbution mode of None. While this is the cheapest method and is our old default behavior, we now have several reasons to default to Range (or Hash). 1. Spark AQE now has both skew handling and and adaptive coalesce 2. With Merge operations None is never the correct mode to request since we are always shuffling anyway 3. More users are coming to Iceberg and don't understand how Spark Partitioning works (required to get good perf with default None) I suggest we change the default distribution mode to Range and add some documentation around configuring AQE to the Spark docs. I think this will be a better behavior for most first users and power users can still manually configure a different mode for their specific requirements. ### Query engine Spark -- 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]
