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https://issues.apache.org/jira/browse/FLINK-19122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17210758#comment-17210758
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Chesnay Schepler commented on FLINK-19122:
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There is no way to set an alias purely for metrics, but you can control the
task name via the DataSet/-Stream APIs.
Alternatively, you could maybe use the task_id instead; it at least has a
stable size, although it admittedly can get annoying when you have to match it
back against the human-readable task name.
> Prometheus scrape generates huge scrape target.
> -----------------------------------------------
>
> Key: FLINK-19122
> URL: https://issues.apache.org/jira/browse/FLINK-19122
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Metrics
> Reporter: Harold Dost III
> Priority: Major
>
> Based on the number sheer size of the labels we are regularly seeing output
> of 26M from the it seems mostly due to the "task_name"
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