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https://issues.apache.org/jira/browse/HDFS-5928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14180541#comment-14180541
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Haohui Mai commented on HDFS-5928:
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The key idea is to ensure {{HAInfo}} is null in non-HA clusters. You might need
some slight tweaks to make it work in all cases, but I think you get the idea.
> show namespace and namenode ID on NN dfshealth page
> ---------------------------------------------------
>
> Key: HDFS-5928
> URL: https://issues.apache.org/jira/browse/HDFS-5928
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Siqi Li
> Assignee: Siqi Li
> Attachments: HDFS-5928.v2.patch, HDFS-5928.v3.patch,
> HDFS-5928.v4.patch, HDFS－5928.v1.patch
>
>
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