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From "Gregor Uhlenheuer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-5584) Incorrect log size for topics larger than 2 GB
Date Fri, 14 Jul 2017 07:41:00 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-5584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16086986#comment-16086986
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Gregor Uhlenheuer commented on KAFKA-5584:
------------------------------------------

It seems the bug was introduced with commit {{e71dce89c0da50f3eccc47d0fc050c92d5a99b88}} I
think.

> Incorrect log size for topics larger than 2 GB
> ----------------------------------------------
>
>                 Key: KAFKA-5584
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5584
>             Project: Kafka
>          Issue Type: Bug
>          Components: log
>            Reporter: Gregor Uhlenheuer
>            Priority: Critical
>              Labels: reliability
>             Fix For: 0.11.0.1
>
>         Attachments: Screen Shot 2017-07-12 at 09.10.53.png
>
>
> The {{size}} of a {{Log}} is calculated incorrectly due to an Integer overflow. For large
topics (larger than 2 GB) this value overflows.
> This is easily observable in the reported metrics values of the path {{log.Log.partition.*.topic.<topicname>.Size}}
(see attached screenshot).
> Moreover I think this breaks the size-based retention (via {{log.retention.bytes}} and
{{retention.bytes}}) of large topics as well.
> I am not sure on the recommended workflow, should I open a pull request on github with
a fix?



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