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Posted to commits@samza.apache.org by "Navina Ramesh (JIRA)" <ji...@apache.org> on 2017/03/23 21:26:41 UTC

[jira] [Resolved] (SAMZA-1134) simplify ZK barrier for version upgrade.

     [ https://issues.apache.org/jira/browse/SAMZA-1134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Navina Ramesh resolved SAMZA-1134.
----------------------------------
    Resolution: Fixed

Issue resolved by pull request 81
[https://github.com/apache/samza/pull/81]

> simplify ZK barrier for version upgrade.
> ----------------------------------------
>
>                 Key: SAMZA-1134
>                 URL: https://issues.apache.org/jira/browse/SAMZA-1134
>             Project: Samza
>          Issue Type: Sub-task
>            Reporter: Boris Shkolnik
>            Assignee: Boris Shkolnik
>             Fix For: 0.13.0
>
>
> Currently the barrier protects against overwriting the barrier_done value, by multiple attempts of reading and writing (while verifying the previously read data version), but since there is only one writer, this logic could be simplified to a single check and an exception.



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