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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5242) Reduce contention on DatanodeInfo instances
Date Mon, 23 Sep 2013 17:01:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5242?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daryn Sharp updated HDFS-5242:
------------------------------

    Status: Patch Available  (was: Open)

No test because there's no way to squeeze in a barrier.
                
> Reduce contention on DatanodeInfo instances
> -------------------------------------------
>
>                 Key: HDFS-5242
>                 URL: https://issues.apache.org/jira/browse/HDFS-5242
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: HDFS-5242.patch
>
>
> Synchronization in {{DatanodeInfo}} instances causes unnecessary contention between call
handlers.

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