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https://issues.apache.org/jira/browse/HDFS-1954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035911#comment-13035911
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Todd Lipcon commented on HDFS-1954:
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I agree this is better to link towards a FAQ, or even better, to a new page in
the documentation. (the wiki is not good for users whose deployments are
isolated from the internet)
> As a user of HDFS, I want this one error message to be more useful.
> -------------------------------------------------------------------
>
> Key: HDFS-1954
> URL: https://issues.apache.org/jira/browse/HDFS-1954
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: philo vivero
> Assignee: Patrick Hunt
> Attachments: 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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