Chesnay Schepler created FLINK-4563:
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Summary: [metrics] scope caching not adjusted for multiple
reporters
Key: FLINK-4563
URL: https://issues.apache.org/jira/browse/FLINK-4563
Project: Flink
Issue Type: Bug
Components: Metrics
Affects Versions: 1.1.0
Reporter: Chesnay Schepler
Every metric group contains a scope string, representing what entities
(job/task/etc.) a given metric belongs to, which is calculated on demand.
Before this string is cached a CharacterFilter is applied to it, which is
provided by the callee, usually a reporter. This was done since different
reporters have different requirements in regards to valid characters. The
filtered string is cached so that we don't have to refilter the string every
time.
This all works fine with a single reporter; with multiple however it is
completely broken as only the first filter is ever applied.
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