[jira] [Commented] (NIFI-8272) Deleted/renamed metrics are still being shown in the REST API Prometheus endpoint

["ASF subversion and git services (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-8272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17440842#comment-17440842 ] 

ASF subversion and git services commented on NIFI-8272:
-------------------------------------------------------

Commit f410c8df0a2b05cdf078e3d3f6b086ac7ebed5f9 in nifi's branch refs/heads/main from noblenumbat360
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=f410c8d ]

NIFI-8272 Delete stale metrics from REST API Prometheus endpoint.

Added <scope>test</scope> tag to the nifi-web-api pom.xml and corrected imports.

Signed-off-by: Matthew Burgess <ma...@apache.org>

This closes #5447


> Deleted/renamed metrics are still being shown in the REST API Prometheus endpoint
> ---------------------------------------------------------------------------------
>
>                 Key: NIFI-8272
>                 URL: https://issues.apache.org/jira/browse/NIFI-8272
>             Project: Apache NiFi
>          Issue Type: Bug
>            Reporter: Noble Numbat
>            Assignee: Noble Numbat
>            Priority: Minor
>              Labels: REST_API, metrics, prometheus
>             Fix For: 1.16.0
>
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
>
> Processors, connections, funnels, etc that have been deleted/renamed from a flow are still being shown in the REST API Prometheus metrics endpoint at their last reported value before they were deleted/renamed.
> I checked the PrometheusReportingTask and deleted items are not displayed in the metrics output as I would expect is the correct behaviour.
> The bug can be replicated with a flow as simple as a single processor by deleting the processor and observing the metrics still included on subsequent calls to the endpoint.



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