[jira] Updated: (CASSANDRA-704) Cluster-wide mutex (ZooKeeper integration)

["Jaakko Laine (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-704?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jaakko Laine updated CASSANDRA-704:
-----------------------------------

    Attachment: zookeeper-3.2.2.jar
                704-cluster-mutex.patch

patch attached for mutex. zookeeper jar is needed as well.

> Cluster-wide mutex (ZooKeeper integration)
> ------------------------------------------
>
>                 Key: CASSANDRA-704
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-704
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Jaakko Laine
>            Assignee: Jaakko Laine
>         Attachments: 704-cluster-mutex.patch, zookeeper-3.2.2.jar
>
>
> Provide a cluster-wide mutex (zookeeper integration). Not strictly needed at the moment, but since it's done now, I'll post it here for community to review & decide if it should be included. This would allow us to have atomic increment/decrement operations before vector clocks, and might come handy in automatic load balancing and other future tasks.

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