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Posted to dev@kafka.apache.org by "Joel Koshy (JIRA)" <ji...@apache.org> on 2012/05/24 00:32:40 UTC

[jira] [Commented] (KAFKA-337) upgrade ZKClient to allow conditional updates in ZK

    [ https://issues.apache.org/jira/browse/KAFKA-337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13281992#comment-13281992 ] 

Joel Koshy commented on KAFKA-337:
----------------------------------

+1

For reference, here is the zkclient change for the updated writeData API.

https://github.com/sgroschupf/zkclient/commit/e72d8fd682907004d0b1488e47d8fe55d405b751

                
> upgrade ZKClient to allow conditional updates in ZK
> ---------------------------------------------------
>
>                 Key: KAFKA-337
>                 URL: https://issues.apache.org/jira/browse/KAFKA-337
>             Project: Kafka
>          Issue Type: Sub-task
>          Components: core
>    Affects Versions: 0.8
>            Reporter: Jun Rao
>            Assignee: Jun Rao
>             Fix For: 0.8
>
>         Attachments: kafka-337.patch, zkclient-20120522.jar
>
>   Original Estimate: 84h
>  Remaining Estimate: 84h
>
> Based on https://cwiki.apache.org/confluence/display/KAFKA/kafka+Detailed+Replication+Design+V3 , there are a few cases that we need to update a ZK path conditionally (based on ZK version). We will need to upgrade to the latest version of ZKClient that exposes the version of a ZK path during writes.

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