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https://issues.apache.org/jira/browse/MAPREDUCE-3360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183460#comment-13183460
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Bhallamudi Venkata Siva Kamesh commented on MAPREDUCE-3360:
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Thanks Thomas for comments.
bq. minor nit: I would prefer the web services to output empty string rather
then "N/A" for the nodeHttpAddress. It seems more programmatic and I tried to
make that change consistent throughout.
If we change nodeHttpAddress to empty string in RMWebServices.java, then it
conflicts with the way we have been displaying it in the UI, as we have been
displaying it as "N/A" for inactive nodes. Or do we need to capture this
behaviour some where in the documentation?
bq. I think we need to change ClusterMetricsInfo.java to match if this field is
Active instead of Total. It has a field totalNodes which appears to really be
active nodes. So I think we should add a new activeNodes field and then make
totalNodes the true total nodes of the cluster -> active + rebooted + lost +
decommissioned
After this change, if we provide *true totalNodes* info through web services,
do we need to provide the same info on the UI also?.
> Provide information about lost nodes in the UI.
> -----------------------------------------------
>
> Key: MAPREDUCE-3360
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3360
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2
> Affects Versions: 0.23.0
> Environment: NA
> Reporter: Bhallamudi Venkata Siva Kamesh
> Assignee: Bhallamudi Venkata Siva Kamesh
> Priority: Critical
> Attachments: LostNodes.png, MAPREDUCE-3360-1.patch,
> MAPREDUCE-3360-2.patch, MAPREDUCE-3360-3.patch, MAPREDUCE-3360-4.patch,
> MAPREDUCE-3360-5.patch, MAPREDUCE-3360.patch, lostNodes.png
>
>
> Currently there is no information provided about *lost nodes*. Provide
> information in the UI.
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