[jira] [Created] (KAFKA-10242) Adding metrics to track the total count of idempotent producers that Broker need to track

["Ming Liu (Jira)" <ji...@apache.org>]

Ming Liu created KAFKA-10242:
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             Summary: Adding metrics to track the total count of idempotent producers that Broker need to track
                 Key: KAFKA-10242
                 URL: https://issues.apache.org/jira/browse/KAFKA-10242
             Project: Kafka
          Issue Type: Improvement
          Components: producer 
    Affects Versions: 2.5.0
            Reporter: Ming Liu
             Fix For: 2.6.0


We found it is very useful to track the total number of idempotent producers that broker is tracking.
In our production environment, we have many idempotent producers for a cluster and sometimes that number increased to very high number which requires some attention to mitigate.
This is especially true for client (< 2.4) where the client retry might generate too many different idempotent producers which can trigger broker GC.



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