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