Apache Flink

Can you use the `logging` module in pyflink? I know my code is being executed, but I don't see any of the logs from inside my process function. This is in a unit test, so I'm not sure if there's something configuring them to be hidden.

Based on <https://github.com/apache/flink/blob/4b37c37426282ecbc29bb699e8e3671f013647e7/docs/content/docs/dev/python/debugging.md>, it seems like maybe the logs get captured to a file and not redirected to stdout/stderr

<@U04FNSCNGJV> The log is printed in the logging file of TaskManager instead of stdour/stderr.