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Posted to jira@kafka.apache.org by "Xin Li (JIRA)" <ji...@apache.org> on 2018/01/08 06:44:00 UTC

[jira] [Assigned] (KAFKA-6030) Integer overflow in log cleaner cleanable ratio computation

     [ https://issues.apache.org/jira/browse/KAFKA-6030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xin Li reassigned KAFKA-6030:
-----------------------------

    Assignee: Xin Li

> Integer overflow in log cleaner cleanable ratio computation
> -----------------------------------------------------------
>
>                 Key: KAFKA-6030
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6030
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Jason Gustafson
>            Assignee: Xin Li
>             Fix For: 1.0.0, 0.11.0.2
>
>
> In {{LogCleaner.LogToClean}}, the following computations, which are used to compute the cleanable ratio, can overflow since the segment size is an integer.
> {code}
>   val cleanBytes = log.logSegments(-1, firstDirtyOffset).map(_.size).sum
>   ...
>   val cleanableBytes = log.logSegments(firstDirtyOffset, math.max(firstDirtyOffset, firstUncleanableOffset)).map(_.size).sum
> {code}
> A PR is already available: https://github.com/apache/kafka/pull/4043.



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