[jira] [Resolved] (KAFKA-5624) Unsafe use of expired sensors

["Jason Gustafson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-5624?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Gustafson resolved KAFKA-5624.
------------------------------------
       Resolution: Fixed
    Fix Version/s: 2.0.0

> Unsafe use of expired sensors
> -----------------------------
>
>                 Key: KAFKA-5624
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5624
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Jason Gustafson
>            Assignee: Manikumar
>            Priority: Major
>             Fix For: 2.0.0
>
>
> Seems a couple unhandled cases following sensor expiration:
> 1. Static sensors (such as {{ClientQuotaManager.delayQueueSensor}}) can be expired due to inactivity, but the references will remain valid and usable. Probably a good idea to either ensure we use a "get or create" pattern when accessing the sensor or add a new static registration option which makes the sensor ineligible for expiration.
> 2. It is possible to register metrics through the sensor even after it is expired. We should probably raise an exception instead.



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