Github user tillrohrmann commented on the pull request:
https://github.com/apache/flink/pull/553#issuecomment-99759058
That would be more javaesque than scalaesque. I would rather move the
osMXBean retrieval into the map function of the `fetchCPULoad` option. That
also solves the problem.
```
fetchCPULoad.map{
method =>
val osMXBean = ....
method.invoke(osMXBean).asInstanceOf[Double]
}.getOrElse(-1)
```
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