Github user bowenli86 commented on the issue:
https://github.com/apache/flink/pull/5171
A good point for testing this in cluster mode. I don't have a 1.5 cluser so
only tested in local mode. The upgrade is unnecessary, I'll revert it.
Which commit message in PR submission are you referring to? The "What is
the purpose of the change ..." part, or the one for each commit?---
