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https://issues.apache.org/jira/browse/HDFS-3321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13261675#comment-13261675
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Uma Maheswara Rao G commented on HDFS-3321:
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Looks, this is a duplicate of HDFS-3320?
> Error message for insufficient data nodes to come out of safemode is wrong.
> ---------------------------------------------------------------------------
>
> Key: HDFS-3321
> URL: https://issues.apache.org/jira/browse/HDFS-3321
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.23.1
> Reporter: Ravi Prakash
> Assignee: Ravi Prakash
> Attachments: HDFS-3321.patch
>
>
> Courtesy Andreina,
> {quote}
> When "dfs.namenode.safemode.min.datanodes" is configured to n
> So namenode will be in safemode until n DN are registered with the namenode .
> But in UI it displays that n+1 datanodes are additionally needed. And "safe
> mode will be turned off automatically " message is also displayed .
> ==========
> "dfs.namenode.safemode.min.datanodes" =2
> Started the NN
> The UI report displays that
>
> "Safe mode is on.The number of live datanodes 0 needs additional 3 live
> inimum number 2. Safe mode will turned off automatically".
> {quote}
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