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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5029) Token operations should not block read operations
Date Wed, 04 Sep 2013 21:41:52 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5029?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daryn Sharp updated HDFS-5029:
------------------------------

    Target Version/s: 3.0.0, 2.3.0  (was: 3.0.0, 2.3.0, 0.23.10)
    
> Token operations should not block read operations
> -------------------------------------------------
>
>                 Key: HDFS-5029
>                 URL: https://issues.apache.org/jira/browse/HDFS-5029
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 0.23.0, 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: HDFS-5029.2.patch, HDFS-5029.branch-23.patch, HDFS-5029.patch, HDFS-5029.patch
>
>
> Token operations unnecessarily obtain the write lock on the namespace.  Edits for token
operations are independent of edits for other namespace write operations, and the edits have
no ordering requirement with respect to namespace changes.

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