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https://issues.apache.org/jira/browse/KAFKA-2419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14959522#comment-14959522
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Jun Rao commented on KAFKA-2419:
--------------------------------

Yes, I was suggesting using a single expiration value at the metrics instance 
level and just letting the scheduler wake up periodically using the expiration 
value as the interval. Is there a need to support sensors with the different 
expiration time?

> Allow certain Sensors to be garbage collected after inactivity
> --------------------------------------------------------------
>
>                 Key: KAFKA-2419
>                 URL: https://issues.apache.org/jira/browse/KAFKA-2419
>             Project: Kafka
>          Issue Type: New Feature
>    Affects Versions: 0.9.0.0
>            Reporter: Aditya Auradkar
>            Assignee: Aditya Auradkar
>            Priority: Blocker
>              Labels: quotas
>             Fix For: 0.9.0.0
>
>
> Currently, metrics cannot be removed once registered. 
> Implement a feature to remove certain sensors after a certain period of 
> inactivity (perhaps configurable).



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