lidavidm commented on pull request #11145: URL: https://github.com/apache/arrow/pull/11145#issuecomment-919253529
This happens because CountRows() creates a dummy OneShotFragment. This fragment, when scanned, unconditionally uses a BackgroundIterator and transfers to the CPU executor. Hence under stress, this could cause both the main thread and CPU threads to be used. I think this needs to be fixed, but for the purposes of CountRows, we can instead use InMemoryFragment which does not transfer. -- 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]
