avantgardnerio opened a new issue, #2886: URL: https://github.com/apache/arrow-datafusion/issues/2886
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** When writing optimizer rules, it is sometime necessary to generate things like aliases which must have unique names. Currently, there is no mutable context in which this can be done, so the only possibility is to use something like a UUID, which is both not easy to read and not deterministic for testing. **Describe the solution you'd like** For the reasons described above, it would be nice to make the `OptimizerConfig` mutable, so we can add a `next_id()` function to generate unique identifiers. **Describe alternatives you've considered** One could argue that this is an abuse of something called "config", and break out a separate context (which could possible wrap the existing immutable config). **Additional context** See PR #2885 -- 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: github-unsubscr...@arrow.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
