[jira] [Resolved] (HDFS-2249) Group changes cause FUSE-DFS I/O error

["Allen Wittenauer (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-2249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Allen Wittenauer resolved HDFS-2249.
------------------------------------

    Resolution: Won't Fix

Yes, we should close it.  This is the nature of caches.

> Group changes cause FUSE-DFS I/O error
> --------------------------------------
>
>                 Key: HDFS-2249
>                 URL: https://issues.apache.org/jira/browse/HDFS-2249
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: fuse-dfs
>            Reporter: Brian Bockelman
>            Assignee: Pete Wyckoff
>
> If a user utilizes the FUSE mount, then has a group change, they will be unable to write into FUSE using the new group information.
> To duplicate (assuming user brian starts only in group brian):
> 1) Write file into FUSE (or do any other action)
> 2) Add user brian to group brian2
> 3) chown anything brian owns to brian:brian2.  The error message that gets passed along is:
> [brian@red ~]$ chown brian:brian2 /mnt/hadoop/user/brian/test_group_perms2
> chown: changing ownership of `/mnt/hadoop/user/brian/test_group_perms2': Input/output error
> I believe this is due to the fact that group information is only looked up at NN connection time?
> If you then remount the FUSE mount, the chown command succeeds.



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