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https://issues.apache.org/jira/browse/FLINK-4563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15650174#comment-15650174
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ASF GitHub Bot commented on FLINK-4563:
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Github user zentol commented on the issue:
https://github.com/apache/flink/pull/2650
functionally it looks correct, I'm just thinking abit how we may make the
test a bit nicer; as using static fields across tests is prone to errors etc.
> [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
> Assignee: Anton Mushin
>
> 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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