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From Íñigo Goiri (JIRA) <j...@apache.org>
Subject [jira] [Commented] (HDFS-13045) RBF: Improve error message returned from subcluster
Date Mon, 09 Apr 2018 21:25:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16431311#comment-16431311
] 

Íñigo Goiri commented on HDFS-13045:
------------------------------------

Thanks [~ywskycn], I added the stack trace too.
Regarding the corner case, I added a unit test covering it.
Not particularly happy about adding it in the middle of that unit test but not sure what better
place.
Let me know if you have comments on  [^HDFS-13045.003.patch].

> RBF: Improve error message returned from subcluster
> ---------------------------------------------------
>
>                 Key: HDFS-13045
>                 URL: https://issues.apache.org/jira/browse/HDFS-13045
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Wei Yan
>            Assignee: Wei Yan
>            Priority: Minor
>         Attachments: HDFS-13045.000.patch, HDFS-13045.001.patch, HDFS-13045.002.patch,
HDFS-13045.003.patch
>
>
> Currently, Router directly returns exception response from subcluster to client, which
may not have the correct error message, especially when the error message containing a path.
> One example, we have a mount path "/a/b" mapped to subclusterA's "/c/d". If user1 does
a chown operation on "/a/b", and he doesn't have corresponding privilege, currently the
error msg looks like "Permission denied. user=user1 is not the owner of inode=/c/d", which
may confuse user. Would be better to reverse the path back to original mount path.
>  
>  



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