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https://issues.apache.org/jira/browse/FLINK-11198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17323412#comment-17323412
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Flink Jira Bot commented on FLINK-11198:
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This issue is assigned but has not received an update in 7 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> Access to MetricGroup in an AggregateFunction(Non Rich)
> -------------------------------------------------------
>
> Key: FLINK-11198
> URL: https://issues.apache.org/jira/browse/FLINK-11198
> Project: Flink
> Issue Type: New Feature
> Components: API / DataStream
> Affects Versions: 1.6.2
> Reporter: Chirag Dewan
> Assignee: Hequn Cheng
> Priority: Major
> Labels: stale-assigned
>
> The only way to add custom metrics from UDF is through RuntimeContext. And,
> RuntimeContext is wired in every RichFunction implementation.
> However, for aggregate() in Windowed Stream, we cannot use the Rich version
> of AggregateFunction. As I remotely understand, is done to avoid exposing the
> state in the Aggregate UDF.
> But can we have some minimal context which does not expose state but provide
> metrics, classloader etc.in the UDF?
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