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https://issues.apache.org/jira/browse/HDFS-7214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14596372#comment-14596372
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Siqi Li commented on HDFS-7214:
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[~wheat9], Thanks for your feedback.
1. for suggestion of changing long to AtomicLong, I am not quite sure what the
improvement would be.
2. I am not sure returning the timestamp is a good idea. Since getNNStarted
method returns a Date object and the UI just displays it. I am just simply
following that pattern.
> 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
>
>
> The currently NN webUI displayed JVM start up. It will be useful to show when
> NN became active.
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