zhengruifeng opened a new pull request, #41055: URL: https://github.com/apache/spark/pull/41055
### What changes were proposed in this pull request? Make 'transformStatCov' lazy ### Why are the changes needed? Existing implementation eagerly compute the `cov`, and return a local relation. Even through currently `message StatCov` is only used in 'Dataset.stat.cov' which returns a double value, it still should be beneficial if we make 'transformStatCov' lazy ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? existing UT -- 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]
