Github user zentol commented on the issue:
https://github.com/apache/flink/pull/3838
The check failed because the spotbugs plugin found something; this plugin
isn't run by default when calling `mvn verify`. You can run the spotbugs
locally by adding `-Dspotbugs` to the maven invocation.
The found problem is the PythonEnvironmentConfig class, which contains
public static non-final fields. I propose making these non-static and
explicitly pass around a config object where needed.
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