[jira] [Created] (FLINK-11922) Support MetricReporter factories

[Shang Yuanchun (Jira)]

Chesnay Schepler created FLINK-11922:
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             Summary: Support MetricReporter factories
                 Key: FLINK-11922
                 URL: https://issues.apache.org/jira/browse/FLINK-11922
             Project: Flink
          Issue Type: New Feature
          Components: Runtime / Metrics
            Reporter: Chesnay Schepler
            Assignee: Chesnay Schepler
             Fix For: 1.9.0


Currently we only support instantiating {{MetricReporters}} via reflection, forcing us (and implementees) to deal with numerous downsides such as non-final fields (resources can only be acquired in open()), frustrating test setup (options must always be encoded in a  {{Configuration}}, and requiring non-arg constructors.

Factories are a more appropriate way of dealing with this, and as such we should add support for it. Existing reporters can be ported to this mechanism without affecting users.



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