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https://issues.apache.org/jira/browse/HDFS-10838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15483279#comment-15483279
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Vinayakumar B commented on HDFS-10838:
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{quote}Was having one doubt about the compatibility of dfsadmin -report output.
Allen Wittenauer, Can you confirm addition of new line "Last Block Report:
").append(new Date(lastBlockReportTime)) for each DN , whether this will be
incompatible change? Asking this doubt, because its a new addition in separate
line. No modifications to existing output lines.{quote}
Related to compatibility of 'dfsadmin -report', we can mark this jira as
incompatible as per [docs|
http://hadoop.apache.org/docs/r3.0.0-alpha1/hadoop-project-dist/hadoop-common/Compatibility.html#Command_Line_Interface_CLI]
or
Can separate only 'dfsadmin -report' related changes to separate Jira which can
be present in only trunk and push remaining changes to branch-2* as well.
> 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,
> HDFS-10838.002.patch, HDFS-10838.003.patch, HDFS-10838.004.patch, NN_UI.png,
> NN_UI_relative_time.png, NN_UI_relative_time_minutes.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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