[jira] [Created] (KAFKA-3857) Additional log cleaner metrics

["Kiran Pillarisetty (JIRA)" <ji...@apache.org>]

Kiran Pillarisetty created KAFKA-3857:
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             Summary: Additional log cleaner metrics
                 Key: KAFKA-3857
                 URL: https://issues.apache.org/jira/browse/KAFKA-3857
             Project: Kafka
          Issue Type: Improvement
            Reporter: Kiran Pillarisetty


The proposal would be to add a couple of additional log cleaner metrics: 
1. Time of last log cleaner run 
2. Cumulative number of successful log cleaner runs since last broker restart.

Existing log cleaner metrics (max-buffer-utilization-percent, cleaner-recopy-percent, max-clean-time-secs, max-dirty-percent) do not differentiate an idle log cleaner from a dead log cleaner. It would be useful to have the above two metrics added, to indicate whether log cleaner is alive (and successfully cleaning) or not.




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