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https://issues.apache.org/jira/browse/HDFS-4924?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lohit Vijayarenu updated HDFS-4924:
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Attachment: HDFS-4924.trunk.1.patch
Attached is first draft where state of NameNode is shown on
dfsclusterhealth.jsp page beside NameNode.
1. If NameNode is in SafeMode, state column shows this with text returned from
JMX
2. If HA enabled, state is shown as Active/Standby
3. If HA not enabled and NN is up then state is shown as Active
4. If State is unkown because dfsclusterhealth pull data from olderversion of
NameNode, then state is shown as Unkown because assuming a state is confusing.
> Show NameNode state on dfsclusterhealth page
> --------------------------------------------
>
> Key: HDFS-4924
> URL: https://issues.apache.org/jira/browse/HDFS-4924
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: federation
> Affects Versions: 2.1.0-beta
> Reporter: Lohit Vijayarenu
> Priority: Minor
> Attachments: HDFS-4924.trunk.1.patch
>
>
> dfsclusterhealth.jsp shows summary of multiple namenodes in cluster. With
> federation combined with HA it becomes difficult to quickly know the state of
> NameNodes in the cluster. It would be good to show if NameNode is
> Active/Standy on summary page.
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