[jira] [Created] (KAFKA-9371) Disk space is not released after Kafka clears data due to retention settings

["Arda Savran (Jira)" <ji...@apache.org>]

Arda Savran created KAFKA-9371:
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             Summary: Disk space is not released after Kafka clears data due to retention settings
                 Key: KAFKA-9371
                 URL: https://issues.apache.org/jira/browse/KAFKA-9371
             Project: Kafka
          Issue Type: Bug
          Components: core, streams
    Affects Versions: 2.2.0
         Environment: CentOS 7.7
            Reporter: Arda Savran


We defined retention time on topics for 15 minutes. It looks like Kafka is deleting the messages as configured however the disk space is not restored. "df" output shows 30G for kafka-logs instead of the real size which is supposed to be 1Gb. 

 {{/usr/sbin/lsof | grep deleted }}

output shows a bunch of files under kafka-logs that are deleted but they are still consuming space.

Is this a known issue? Is there a setting that I can apply to kafka broker server?



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