[jira] [Created] (KAFKA-17035) Add debug log to retention cleanupLogs method to help troubleshoot issues

["Luke Chen (Jira)" <ji...@apache.org>]

Luke Chen created KAFKA-17035:
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             Summary: Add debug log to retention cleanupLogs method to help troubleshoot issues
                 Key: KAFKA-17035
                 URL: https://issues.apache.org/jira/browse/KAFKA-17035
             Project: Kafka
          Issue Type: Improvement
            Reporter: Luke Chen


Sometimes, there will be some log segments leftover without getting deleted as configured. One example is, the config is set to retention.ms = 7 days, but there are some log segments stay in storage for more than 7 days. In this case, it's difficult to troubleshoot if there is a bug in kafka or something wrong in the log segment (ex: max time is wrongly set).

To help troubleshooting, we could add "trace level" or "debug level" logs when doing retentionSize/retentionMs/logStartOffset check for each log segment.



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