andygrove opened a new issue, #1648: URL: https://github.com/apache/datafusion-ballista/issues/1648
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** DataFusion's hash join implementation does not have spilling yet, so can easily OOM. This is even more likely in Ballista because each executor is processing multiple tasks in parallel. For example, I cannot get the integration tests (`./dev/integration-test.sh`) due to OOM. **Describe the solution you'd like** Personally, I think it would be better for Ballista to default to sort-merge join, and let the user override that if they want hash join. This would be the opposite of DataFusion's config, which enables hash join by default. **Describe alternatives you've considered** It would be nice if DataFusion had a spilling join implementation. I am working on one in Comet in https://github.com/apache/datafusion-comet/pull/4184 **Additional context** -- 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]
