Github user HyukjinKwon commented on the issue: https://github.com/apache/spark/pull/20519 I am not yet fully sure about how sitecustomize fills some bytes to stdout but I believe it doesn't always happen because at least we have it for Python coverage - https://github.com/apache/spark/blob/master/python/test_coverage/sitecustomize.py. The only way I used to verify this PR and https://github.com/apache/spark/pull/20424 was to manually add some bytes to stdout. So, I am still thinking it's a corner case .. Can we otherwise simply flush and remove the stdout right before starting the daemon?
--- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org