[jira] [Created] (KAFKA-6660) Monitoring number of messages expired due to retention policy

["Matt Garbis (JIRA)" <ji...@apache.org>]

Matt Garbis created KAFKA-6660:
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             Summary: Monitoring number of messages expired due to retention policy
                 Key: KAFKA-6660
                 URL: https://issues.apache.org/jira/browse/KAFKA-6660
             Project: Kafka
          Issue Type: Improvement
            Reporter: Matt Garbis


I have not been able to find this out, but is there a way to monitor how many messages were expired based on the retention policy? If not, JMX metrics like this would be very useful for my team. I would like to be able to filter this by topic and broker. Something like:
{code:java}
kafka.server:type=BrokerTopicMetrics,name=MessagesExpiredPerSec{code}
 

Additionally taking this one step further, it would be cool to be able to monitor how many messages a consumer group did not consume before they were expired.



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