[jira] [Commented] (KAFKA-1755) Improve error handling in log cleaner

["Joel Koshy (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-1755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14333360#comment-14333360 ] 

Joel Koshy commented on KAFKA-1755:
-----------------------------------

Created reviewboard https://reviews.apache.org/r/31306/
 against branch origin/trunk

> Improve error handling in log cleaner
> -------------------------------------
>
>                 Key: KAFKA-1755
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1755
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Joel Koshy
>            Assignee: Joel Koshy
>              Labels: newbie++
>             Fix For: 0.8.3
>
>         Attachments: KAFKA-1755.patch
>
>
> The log cleaner is a critical process when using compacted topics.
> However, if there is any error in any topic (notably if a key is missing) then the cleaner exits and all other compacted topics will also be adversely affected - i.e., compaction stops across the board.
> This can be improved by just aborting compaction for a topic on any error and keep the thread from exiting.
> Another improvement would be to reject messages without keys that are sent to compacted topics although this is not enough by itself.



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