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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1954) Improve corrupt files warning message
Date Sat, 28 May 2011 22:00:48 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13040682#comment-13040682
] 

Todd Lipcon commented on HDFS-1954:
-----------------------------------

Hey Suresh. I agree that this is not the most common case for large existing clusters. But,
people running large existing clusters already know the above, and shouldn't be confused by
the message. The thinking is that "hint" type messages ought to be directed towards new users,
since they're the ones who don't have the operational experience to know better.

Do you have an alternative patch that would satisfy both the new users and the big cluster
operators?

> 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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