rafaelkyrdan commented on issue #19424: [SPARK-22197][SQL] push down operators to data source before planning URL: https://github.com/apache/spark/pull/19424#issuecomment-540666492 @cloud-fan I'm wondering whether it is not a priority or it wasn't easy to implement? If I want to implement it what class/interface should I extend? Is it possible to do it in a custom `JDBC` source? Do you have any suggestions? The use case looks like this: there are 50M records in the DB I wanna select only 1M why I should read all of them?
---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org