Github user jerryshao commented on the issue:
https://github.com/apache/spark/pull/11994
Hi @CodingCat , thanks a lot for your explanation. IIUC, from the code you
mentioned above, we still need to pass `MetricRegistry` to `Reporter`,
otherwise how would a reporter report the registered metrics.
In your example, you're using a new `MetricRegistry`, which is empty. I
don't think this `Reporter` will report anything in `CodeHaleCsvReporter`,
unless we pass the `MetricRegistry` from `MetricsSystem` to this reporter.
Please correct me if I'm wrong. :)
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