bjornjorgensen opened a new pull request #35296: URL: https://github.com/apache/spark/pull/35296
### What changes were proposed in this pull request? This is for SPARK-37981Deletes columns with all Null as default. Do also see https://github.com/apache/spark/pull/26098 User HyukjinKwon did a reviewed on 21 Oct 2019 "Hey, you should document this in DataFrameWrtier, DataStreamWrtier, readwriter.py" ### Why are the changes needed? Users need to know why there column(s) with all NaN or Null are gone. ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? 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]
