[jira] Commented: (HADOOP-4395) Reloading FSImage and FSEditLog may erase user and group information

["Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-4395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638699#action_12638699 ] 

Tsz Wo (Nicholas), SZE commented on HADOOP-4395:
------------------------------------------------

HADOOP-3364 changes FSImage and FSEditLog loading.  The OP_SET_OWNER command is misinterpreted.

> Reloading FSImage and FSEditLog may erase user and group information
> --------------------------------------------------------------------
>
>                 Key: HADOOP-4395
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4395
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Tsz Wo (Nicholas), SZE
>            Priority: Blocker
>             Fix For: 0.18.2
>
>
> The bug can be reproduced as following:
> {noformat}
> bash-3.2$ ./bin/hadoop fs -lsr                 
> -rw-r--r--   3 tsz supergroup       1366 2008-10-10 17:52 /user/tsz/a.txt
> -rw-r--r--   3 tsz supergroup       1366 2008-10-10 17:52 /user/tsz/b.txt
> bash-3.2$ ./bin/hadoop fs -chown sze a.txt
> bash-3.2$ ./bin/hadoop fs -lsr
> -rw-r--r--   3 sze supergroup       1366 2008-10-10 17:52 /user/tsz/a.txt
> -rw-r--r--   3 tsz supergroup       1366 2008-10-10 17:52 /user/tsz/b.txt
> {noformat}
> Then, restart cluster ...
> {noformat}
> bash-3.2$ ./bin/hadoop fs -lsr
> -rw-r--r--   3 sze                  1366 2008-10-10 17:52 /user/tsz/a.txt
> -rw-r--r--   3 tsz supergroup       1366 2008-10-10 17:52 /user/tsz/b.txt
> {noformat}
> The group information for a.txt is missing.

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