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Posted to jira@kafka.apache.org by "Jason Gustafson (JIRA)" <ji...@apache.org> on 2017/07/21 16:51:00 UTC

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

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

Jason Gustafson updated KAFKA-5624:
-----------------------------------
    Description: 
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.

  was:
Seems a couple unhandled cases following sensor expiration:

1. Static sensors (such as {{ClientQuotaManager.}}) 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.


> 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
>
> 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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