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From "liang xie (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HBASE-3137) Optimize CAS operations in ZKAssign by being optimistic rather than always doing a sync()
Date Sat, 22 Sep 2012 09:15:07 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

liang xie reassigned HBASE-3137:
--------------------------------

    Assignee: liang xie
    
> Optimize CAS operations in ZKAssign by being optimistic rather than always doing a sync()
> -----------------------------------------------------------------------------------------
>
>                 Key: HBASE-3137
>                 URL: https://issues.apache.org/jira/browse/HBASE-3137
>             Project: HBase
>          Issue Type: Improvement
>          Components: Zookeeper
>            Reporter: Jonathan Gray
>            Assignee: liang xie
>
> HBASE-3136 introduces a fix to the CAS operations in ZKAssign by doing a call to ZK sync()
before doing the operation.
> This gives correct behavior but requires doing a sync every time, even if it isn't necessary.
 Instead, we should be optimistic and only do retries/syncing if necessary.

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