[jira] [Commented] (KAFKA-3802) log mtimes reset on broker restart

["Andrew Otto (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-3802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15319225#comment-15319225 ] 

Andrew Otto commented on KAFKA-3802:
------------------------------------

Possibly related to KAFKA-1379

> log mtimes reset on broker restart
> ----------------------------------
>
>                 Key: KAFKA-3802
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3802
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.9.0.1
>            Reporter: Andrew Otto
>
> Folks over in http://mail-archives.apache.org/mod_mbox/kafka-users/201605.mbox/%3CCAO8=cz0RAGJAd1Acx4GEqcWJ+RKd1gMdAvkjWytwthKSzfgb5Q@mail.gmail.com%3E are commenting about this issue.
> In 0.9, any data log file that was on
> disk before the broker has it's mtime modified to the time of the broker
> restart.
> This causes problems with log retention, as all the files then look like
> they contain recent data to kafka.  We use the default log retention of 7
> days, but if all the files are touched at the same time, this can cause us
> to retain up to 2 weeks of log data, which can fill up our disks.
> This happens *most* of the time, but seemingly not all.  We have seen broker restarts where mtimes were not changed.



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