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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6046) add dfs.client.mmap.enabled
Date Tue, 04 Mar 2014 06:48:21 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6046?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-6046:
---------------------------------------

       Resolution: Fixed
    Fix Version/s: 2.4.0
           Status: Resolved  (was: Patch Available)

> add dfs.client.mmap.enabled
> ---------------------------
>
>                 Key: HDFS-6046
>                 URL: https://issues.apache.org/jira/browse/HDFS-6046
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs-client
>    Affects Versions: 2.4.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>             Fix For: 2.4.0
>
>         Attachments: HDFS-6046.001.patch, HDFS-6046.002.patch, HDFS-6046.003.patch
>
>
> It would be nice to have a configuration variable, dfs.client.mmap.enabled. which would
disable mmap reads in the client.  This could come in handy for debugging or performance benchmarking.



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