David Mao created KAFKA-10695:
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Summary: Improve interface for sensor expiration
Key: KAFKA-10695
URL: https://issues.apache.org/jira/browse/KAFKA-10695
Project: Kafka
Issue Type: Improvement
Components: metrics
Reporter: David Mao
To check whether a sensor has expired, a user should be able to check the
return value of {{Sensor.hasExpired()}}.{{ }}However, recording to an expired
sensor isn't prohibited, and if a user does record to an expired sensor, we can
lose the information that the sensor was expired and removed from metrics.
The way we work around this currently, is that all expiring sensors are
retrieved from {{Metrics}} each time.
A potential improvement would be to add some internal state on whether a sensor
has been expired (removed from {{Metrics)}}, and hasExpired should then return
that internal state. To do this, we would need to add a new method in Sensor
that expresses the intent of expiring a sensor.
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