Github user mpjlu commented on the issue:
https://github.com/apache/spark/pull/17742
** The most optimized version would be doing a quickselect on each row and
select top k.
** An easy-to-implement version would be:
I test both of the methods, the best performance is about 50% this PR.
Welcome to do more test.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
