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https://issues.apache.org/jira/browse/HDFS-7214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14596981#comment-14596981
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Ming Ma commented on HDFS-7214:
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[~l201514] you are right that HDFS-7257 has added the metrics for it. Having
this information on the webUI is useful. Maybe we can still update webUI based
on jmx?
> Display the time when NN became active on the webUI
> ---------------------------------------------------
>
> Key: HDFS-7214
> URL: https://issues.apache.org/jira/browse/HDFS-7214
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Siqi Li
> Assignee: Siqi Li
> Labels: BB2015-05-TBR
> Attachments: HDFS-7214.v1.patch, HDFS-7214.v2.patch,
> HDFS-7214.v3.patch, HDFS-7214.v4.patch
>
>
> The currently NN webUI displayed JVM start up. It will be useful to show when
> NN became active.
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