[PR] MINOR: Don't print cleaning group metadata log if empty [kafka]

["dajac (via GitHub)" <gi...@apache.org>]

dajac opened a new pull request, #19080:
URL: https://github.com/apache/kafka/pull/19080

   The new group coordinator prints the following line at fixed interval even if no groups were deleted:
   
   ```
   Generated 0 tombstone records while cleaning up group metadata in 0 milliseconds. (org.apache.kafka.coordinator.group.GroupCoordinatorShard)
   ```
   
   The time component has some value in its own but it may be better to not print if when there are not records in order to reduce the spam in the logs.
   


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Re: [PR] MINOR: Don't print cleaning group metadata log if empty [kafka]

["dajac (via GitHub)" <gi...@apache.org>]

dajac merged PR #19080:
URL: https://github.com/apache/kafka/pull/19080


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