[jira] [Assigned] (FLINK-4563) [metrics] scope caching not adjusted for multiple reporters

["Anton Mushin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-4563?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Anton Mushin reassigned FLINK-4563:
-----------------------------------

    Assignee: Anton Mushin

> [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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