yeshengm opened a new pull request, #52374: URL: https://github.com/apache/spark/pull/52374
### What changes were proposed in this pull request? The CatalogColumnStat.readLargeTableProp is an O(N) operation. Considering a table can have a lot of table properties, this effectively becomes an O(N^2) operation, which can be very slow for tables with a lot of table properties. This PR improves the algorithmic complexity to O(N) by only constructing the large table properties if numParts exists. ### Why are the changes needed? For fixing a performance issue unintentionally introduced before. ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? Existing unit tests. ### Was this patch authored or co-authored using generative AI tooling? No -- 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]
