title: Is kafka log cleaner logging anything on AWS MSK?
body: <p>I use AWS MSK cluster with brokers logging turned on to CloudWatch. Logging works and I can see brokers logs. We have some topics with <code>cleanup.policy=compact</code> and some with <code>cleanup.policy=delete</code>. The system is running on the new cluster for about 2 weeks now.</p>
  <p>From my research (e.g. <a href="https://zendesk.engineering/an-investigation-into-kafka-log-compaction-5e520f4291f0" rel="nofollow noreferrer">https://zendesk.engineering/an-investigation-into-kafka-log-compaction-5e520f4291f0</a>) I see that kafka should run log cleaner (obviously) and there should be some traces in logs of this activity. However in my CloudWatch log group I cannot find a word &quot;cleaner&quot; or &quot;cleaned&quot; and I cannot find any trace of log cleaner running.</p>
  <p>Is log cleaner running at all? It obviously should but I can't find anything in the logs to confirm this, and also we have a lot of messages eligible for cleanup but still not cleaned, for about 2 weeks now.</p>
  <p>Kafka cluster version is 2.8.1</p>