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https://issues.apache.org/jira/browse/KAFKA-657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542566#comment-13542566
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Jay Kreps commented on KAFKA-657:
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Looks good to me. A few things in addition to the other comments:
76. We baselined the other request versions to 0, but this one is starting at
1. Can we change it to 0 for consistency?
77. It would be good to add the metadata string field.
> 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
> Attachments: KAFKA-657v1.patch, KAFKA-657v2.patch, KAFKA-657v3.patch,
> KAFKA-657v4.patch, KAFKA-657v5.patch, KAFKA-657v6.patch, KAFKA-657v7.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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