Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/2445
Does this work? The reason for the initial reflection-based initialization
was that the sun-specific class may not be available in some environments. I am
unsure when the "ClassNotFound" error will be thrown. Upon loading of the
TaskManager? Or upon running the code that installs the Gauge. I fear it may be
thrown earlier than when the Gauge is created.
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