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https://issues.apache.org/jira/browse/HDFS-16761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17688200#comment-17688200
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ASF GitHub Bot commented on HDFS-16761:
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dombizita opened a new pull request, #5390:
URL: https://github.com/apache/hadoop/pull/5390
### Description of PR
There are 12 header cells in the table at the Datanodes page, which didn't
align with the number of cells in the Dead Nodes section, where only 11 cells
were. Because of this if there was at least one dead datanode in the cluster
the Datanode page didn't load on the NN UI.
### How was this patch tested?
Tested on the NN UI with a dead datanode.
> Namenode UI for Datanodes page not loading if any data node is down
> -------------------------------------------------------------------
>
> Key: HDFS-16761
> URL: https://issues.apache.org/jira/browse/HDFS-16761
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.2.2
> Reporter: Krishna Reddy
> Assignee: Zita Dombi
> Priority: Major
> Fix For: 3.2.2
>
>
> Steps to reproduce:
> - Install the hadoop components and add 3 datanodes
> - Enable namenode HA
> - Open Namenode UI and check datanode page
> - check all datanodes will display
> - Now make one datanode down
> - wait for 10 minutes time as heartbeat expires
> - Refresh namenode page and check
>
> Actual Result: It is showing error message "NameNode is still loading.
> Redirecting to the Startup Progress page."
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