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Posted to jira@kafka.apache.org by "Matthias J. Sax (Jira)" <ji...@apache.org> on 2020/05/27 21:01:00 UTC

[jira] [Commented] (KAFKA-740) Improve crash-safety of log segment swap

    [ https://issues.apache.org/jira/browse/KAFKA-740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17118080#comment-17118080 ] 

Matthias J. Sax commented on KAFKA-740:
---------------------------------------

Is this still an issue?

> Improve crash-safety of log segment swap
> ----------------------------------------
>
>                 Key: KAFKA-740
>                 URL: https://issues.apache.org/jira/browse/KAFKA-740
>             Project: Kafka
>          Issue Type: Bug
>          Components: log
>            Reporter: Jay Kreps
>            Assignee: Jay Kreps
>            Priority: Major
>              Labels: reliability
>
> Currently Log.replaceSegments has a bug that can cause a swap containing multiple segments to partially complete. This would lead to duplicate data in the log.
> The proposed fix is to use a name like offset1_and_offset2.swap for a segment meant to replace segments with base offsets offset1 and offset2.



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