Chesnay Schepler created FLINK-14410:
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Summary: Retrieve CharacterFilter once after registration
Key: FLINK-14410
URL: https://issues.apache.org/jira/browse/FLINK-14410
Project: Flink
Issue Type: Improvement
Components: Runtime / Metrics
Reporter: Chesnay Schepler
Assignee: Chesnay Schepler
Fix For: 1.10.0
Reporters can use a {{CharacterFilter}} to remove/replace characters when
assembling metric identifiers. Currently the reporter pass this filter in every
call to scope-related methods on the {{MetricGrou}}. We could streamline the
{{MetricScope}} API proposed in FLINK-14350 if instead we retrieved this filter
once after the reporter is initialized.
This would furthermore prevent subtle bugs if reporters use varying filters;
due to the caching of scopes only the first filter would truly be applied to
the scope.
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