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https://issues.apache.org/jira/browse/HDFS-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13008539#comment-13008539
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Andrew Ryan commented on HDFS-1769:
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oh lol, hkuang already filed this
> Namenode UI should list "time since marked as dead" for dead nodes
> ------------------------------------------------------------------
>
> Key: HDFS-1769
> URL: https://issues.apache.org/jira/browse/HDFS-1769
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Affects Versions: 0.20.2
> Reporter: Andrew Ryan
> Assignee: Hairong Kuang
> Priority: Minor
>
> When scanning the namenode UI for dead nodes, it is nice to know the length
> time they've been marked as dead. This way you can see things like:
> 1) Did a bunch of nodes go dead all at the same time?
> 2) Have some nodes been dead for a long time, while others have only just
> gone dead?
> This patch was made in the FB tree internally by Hairong, so just needs to be
> ported to open source.
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