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Posted to dev@kafka.apache.org by "Jun Rao (JIRA)" <ji...@apache.org> on 2011/08/24 01:21:29 UTC

[jira] [Commented] (KAFKA-117) The FetcherRunnable busy waits on empty fetch requests

    [ https://issues.apache.org/jira/browse/KAFKA-117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13089864#comment-13089864 ] 

Jun Rao commented on KAFKA-117:
-------------------------------

We probably should just have a method validBytes that returns the valid bytes in the original message (ie, if the message is compressed, the bytes refer to the compressed bytes). There is no real need for knowing the total valid bytes on a compressed message set.

> The FetcherRunnable busy waits on empty fetch requests 
> -------------------------------------------------------
>
>                 Key: KAFKA-117
>                 URL: https://issues.apache.org/jira/browse/KAFKA-117
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.7
>            Reporter: Neha Narkhede
>             Fix For: 0.7
>
>         Attachments: KAFKA-117.patch
>
>
> The FetcherRunnable busy waits on empty fetch requests by skipping the backoff logic. This can fill up the disk space due to the public access log being filled up. Also the CPU usage shoots up to 100%. 

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