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https://issues.apache.org/jira/browse/HDFS-15974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17321881#comment-17321881
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zhu commented on HDFS-15974:
----------------------------
Thank you [~elgoiri]. The function GetEnteringMaintenanceNodes returns " N/A "
, which will cause the page parsing Json exception . I think this function
returns null to solve the problem, and my test is exactly that.
*The debug exception is as follows:*
SyntaxError: Unexpected token N in JSON at position 0
at JSON.parse (<anonymous>)
at workaround (federationhealth.js:321)
at Object.<anonymous> (federationhealth.js:398)
at Object.success (federationhealth.js:504)
at c (jquery-3.5.1.min.js:2)
at Object.fireWith [as resolveWith] (jquery-3.5.1.min.js:2)
at l (jquery-3.5.1.min.js:2)
at XMLHttpRequest.<anonymous> (jquery-3.5.1.min.js:2)
!image-2021-04-15-11-36-47-644.png!
> RBF: Unable to display the datanode UI of the router
> ----------------------------------------------------
>
> Key: HDFS-15974
> URL: https://issues.apache.org/jira/browse/HDFS-15974
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: rbf, ui
> Affects Versions: 3.4.0
> Reporter: zhu
> Priority: Major
> Attachments: HDFS-15358-1.patch, image-2021-04-15-11-36-47-644.png
>
>
> Clicking the Datanodes tag on the Router UI does not respond.
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