Group changes cause FUSE-DFS I/O error
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Key: HADOOP-5542
URL: https://issues.apache.org/jira/browse/HADOOP-5542
Project: Hadoop Core
Issue Type: Bug
Affects Versions: 0.19.1
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:
[br...@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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