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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9017) UI shows wrong last contact for dead nodes
Date Sat, 12 Sep 2015 07:50:46 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14741956#comment-14741956
] 

Vinayakumar B commented on HDFS-9017:
-------------------------------------

bq. Ideally last contact for nodes that never connected would be "never" instead of the epoch
or boot time.
AFAIK, Nodes those never connected will never show even in 'Dead' nodes list. Because NN doesnt
persist Nodes information.
'dead' nodes from NN UI are only those nodes which are connected but got lost.
Am I missing something here?

Also for the available dead nodes list, Can you confirm similar problem exists in new HTML5
UI?

> UI shows wrong last contact for dead nodes
> ------------------------------------------
>
>                 Key: HDFS-9017
>                 URL: https://issues.apache.org/jira/browse/HDFS-9017
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>            Reporter: Daryn Sharp
>            Assignee: J.Andreina
>            Priority: Minor
>
> It's showing the last contact as the restart of the NN host (not process, host).  Presumably
it's using monotonic time 0.  Ideally last contact for nodes that never connected would be
"never" instead of the epoch or boot time.



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