Jason Gustafson created KAFKA-5624:
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Summary: 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.}}) 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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