Github user zentol commented on the issue:
https://github.com/apache/flink/pull/6270
Ultimately this should happen if the client sets the `keep-alive` flag on
the first request.
One thing i observed is that it appears to be gated by time. Uploading a
jar immediately triggers the JarListHandler, leading to the log message posted
in the JIRA. However refreshing the page or manually pinging the listing causes
no such thing.---
