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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10838) Last full block report received time for each DN should be easily discoverable
Date Tue, 06 Sep 2016 14:44:21 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15467580#comment-15467580

Arpit Agarwal commented on HDFS-10838:

Nice, thank you for the quick patch [~surendrasingh]!

# {{DatanodeInfoProto convert(DatanodeInfo info)}} should handle missing lastBlockReportTime
for wire compatibility. Something like this should work.
di.hasLastBlockReportTime() ? di.getLastBlockReportTime() : 0
# Also when the value is displayed in the web UI/command line output it should be checked
whether it is equal to zero and if so something like 'never' should be displayed instead of
the timestamp.
# Should the NN web UI to show relative time, just like last heartbeat time? I'm fine with
either though.

> Last full block report received time for each DN should be easily discoverable
> ------------------------------------------------------------------------------
>                 Key: HDFS-10838
>                 URL: https://issues.apache.org/jira/browse/HDFS-10838
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: ui
>            Reporter: Arpit Agarwal
>            Assignee: Surendra Singh Lilhore
>         Attachments: DFSAdmin-Report.png, HDFS-10838-001.patch, NN_UI.png
> It should be easy for administrators to discover the time of last full block report from
each DataNode.
> We can show it in the NameNode web UI or in the output of {{hdfs dfsadmin -report}},
or both.

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