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From "Manikumar (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (KAFKA-5624) Unsafe use of expired sensors
Date Wed, 10 Jan 2018 08:28:00 GMT

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

Manikumar reassigned KAFKA-5624:
--------------------------------

    Assignee: Manikumar

> 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
>
> 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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