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From "Patrick Hunt (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1954) Improve corrupt files warning message
Date Wed, 01 Jun 2011 06:33:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13041998#comment-13041998
] 

Patrick Hunt commented on HDFS-1954:
------------------------------------

{quote}
Can we just stick to this change and not provide any other links or hints?
I can contribute a FAQ.
{quote}

I think a FAQ entry would be a great help to users. As I mentioned if that existed this change
would probably have gone a lot smoother. :-)

Makes sense to drop the hint given we'd have a proper writeup. I would like to just reference
the existence of a FAQ instead, no link but just something like "<small>See the Hadoop
FAQ for common causes and potential solutions</small>" or somesuch. This would only
be displayed in the error case, not all the time. That sound reasonable?

> Improve corrupt files warning message
> -------------------------------------
>
>                 Key: HDFS-1954
>                 URL: https://issues.apache.org/jira/browse/HDFS-1954
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: philo vivero
>            Assignee: Patrick Hunt
>             Fix For: 0.22.0
>
>         Attachments: HDFS-1954.patch, HDFS-1954.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> On NameNode web interface, you may get this warning:
>   WARNING : There are about 32 missing blocks. Please check the log or run fsck.
> If the cluster was started less than 14 days before, it would be great to add: "Is dfs.data.dir
defined?"
> If at the point of that error message, that parameter could be checked, and error made
"OMG dfs.data.dir isn't defined!" that'd be even better. As is, troubleshooting undefined
parameters is a difficult proposition.
> I suspect this is an easy fix.

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