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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6435) Add support for specifying a static uid/gid mapping for the NFS gateway
Date Wed, 21 May 2014 00:01:43 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14004139#comment-14004139
] 

Aaron T. Myers commented on HDFS-6435:
--------------------------------------

I should also mention that I just did some manual testing between a client machine with a
completely different set of UIDs/GIDs from the machine running the NFS Gateway, and this feature
works as expected once the static mapping file is configured correctly. In my case, I used
the following mapping file, and while browsing HDFS over NFS was able to see the correct user/group
names displayed:

{noformat}
$ cat /etc/nfs.map
uid 1037  1000 # atm
gid 516   1000 # atm
uid 17    115  # hdfs
gid 18    125  # hdfs
gid 23    999  # supergroup
{noformat}

> Add support for specifying a static uid/gid mapping for the NFS gateway
> -----------------------------------------------------------------------
>
>                 Key: HDFS-6435
>                 URL: https://issues.apache.org/jira/browse/HDFS-6435
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: nfs
>    Affects Versions: 2.4.0
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>         Attachments: HDFS-6435.patch
>
>
> It's quite reasonable that folks will want to access the HDFS NFS Gateway from client
machines where the UIDs/GIDs do not line up with those on the NFS Gateway itself. We should
provide a way to map these UIDs/GIDs between the systems.



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