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From "Chesnay Schepler (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-7692) Support user-defined variables in Metrics
Date Tue, 14 Nov 2017 14:36:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-7692?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Chesnay Schepler updated FLINK-7692:
    Fix Version/s:     (was: 1.4.0)

> Support user-defined variables in Metrics
> -----------------------------------------
>                 Key: FLINK-7692
>                 URL: https://issues.apache.org/jira/browse/FLINK-7692
>             Project: Flink
>          Issue Type: Improvement
>          Components: Metrics
>    Affects Versions: 1.4.0
>            Reporter: Chesnay Schepler
>            Assignee: Wei-Che Wei
>            Priority: Minor
>             Fix For: 1.5.0
> Reporters that identify metrics with a set of key-value pairs are currently limited to
the variables defined by Flink, like the taskmanager ID, with users not being able to supply
their own.
> This is inconsistent with reporters that use metric identifiers that freely include user-defined
groups constructted via {{MetricGroup#addGroup(String name)}}.
> I propose adding a new method {{MetricGroup#addGroup(String key, String name)}} that
adds a new key-value pair to the {{variables}} map in it's constructor. When constructing
the metric identifier the key should be included as well, resulting in the same result as
when constructing the metric groups tree via {{group.addGroup(key).addGroup(value)}}.
> For this a new {{KeyedGenericMetricGroup}} should be created that resembles the unkeyed
version, with slight modifications to the constructor and {{getScopeComponents}} method.

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