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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3483) hdfs fsck doesn't run with ViewFS path
Date Mon, 04 Jun 2012 16:21:23 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13288652#comment-13288652
] 

Robert Joseph Evans commented on HDFS-3483:
-------------------------------------------

Daryn,

I tend to disagree that we don't want to expose the mapping.  I think it is incredibly useful
to be able to know what is happening here, and expose it to the end user so they can then
reason about what they want to have happen.  For example doing a mv from one federated namespace
to another will either be very slow, or it will fail, I don't remember which it is right now.
In either case it would be good to expose the mounting to both the end user, and also programatically
so that appropriate steps can be taken in those situations.  Even if the step is just to call
up ops and complain that they have the namespaces all wrong for what they want to do.

All OSes expose it, type mount on Linux and it will list where each file system is mounted.
                
> hdfs fsck doesn't run with ViewFS path
> --------------------------------------
>
>                 Key: HDFS-3483
>                 URL: https://issues.apache.org/jira/browse/HDFS-3483
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.0.0-alpha
>            Reporter: Stephen Chu
>              Labels: newbie
>         Attachments: core-site.xml, hdfs-site.xml
>
>
> I'm running a HA + secure + federated cluster.
> When I run "hdfs fsck /nameservices/ha-nn-uri/", I see the following:
> bash-3.2$ hdfs fsck /nameservices/ha-nn-uri/
> FileSystem is viewfs://oracle/
> DFSck exiting.
> Any path I enter will return the same message.
> Attached are my core-site.xml and hdfs-site.xml.

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