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Date: Fri, 4 Jan 2013 23:44:12 +0000 (UTC)
From: "David Arthur (JIRA)" <jira@apache.org>
To: dev@kafka.apache.org
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Subject: [jira] [Commented] (KAFKA-657) Add an API to commit offsets
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    [ https://issues.apache.org/jira/browse/KAFKA-657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13544354#comment-13544354 ] 

David Arthur commented on KAFKA-657:
------------------------------------

Jun, 

80. Those commented out tests will be valid once the metadata is actually stored. I left it to save someone the effort later on

81. +1

Since this patch has been committed maybe you or Jay can just make these changes on trunk.
                
> Add an API to commit offsets
> ----------------------------
>
>                 Key: KAFKA-657
>                 URL: https://issues.apache.org/jira/browse/KAFKA-657
>             Project: Kafka
>          Issue Type: New Feature
>            Reporter: Jay Kreps
>              Labels: project
>             Fix For: 0.8.1
>
>         Attachments: KAFKA-657v1.patch, KAFKA-657v2.patch, KAFKA-657v3.patch, KAFKA-657v4.patch, KAFKA-657v5.patch, KAFKA-657v6.patch, KAFKA-657v7.patch, KAFKA-657v8.patch
>
>
> Currently the consumer directly writes their offsets to zookeeper. Two problems with this: (1) This is a poor use of zookeeper, and we need to replace it with a more scalable offset store, and (2) it makes it hard to carry over to clients in other languages. A first step towards accomplishing that is to add a proper Kafka API for committing offsets. The initial version of this would just write to zookeeper as we do today, but in the future we would then have the option of changing this.
> This api likely needs to take a sequence of consumer-group/topic/partition/offset entries and commit them all.
> It would be good to do a wiki design on how this would work and consensus on that first.

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