[jira] [Created] (FLINK-14993) Pass all reporter-specific settings via the FrontMetricGroup

[Shang Yuanchun (Jira)]

Chesnay Schepler created FLINK-14993:
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             Summary: Pass all reporter-specific settings via the FrontMetricGroup
                 Key: FLINK-14993
                 URL: https://issues.apache.org/jira/browse/FLINK-14993
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Metrics
            Reporter: Chesnay Schepler
            Assignee: Chesnay Schepler
             Fix For: 1.10.0


For the assembly of scopes there currently exist 3 parameters that are defined per reporter; the reporter index, used to cache scopes separately per reporter, and the delimiter/filter pair that is applied to each scope.

Currently, the FrontMetricGroup only provides the index, which the AbstractMetricGroup uses to figure out which delimiter should be used.
Instead we can store the delimiter directly in the FrontMetricGroup; this simplifies the metric group implementation and further decouples the scope generation from the MetricRegistry.



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