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https://issues.apache.org/jira/browse/HDFS-14035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16672462#comment-16672462
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Chen Liang commented on HDFS-14035:
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Thanks for the discussion [~csun], [~xkrogen]! Post v003 patch.
> NN status discovery does not leverage delegation token
> ------------------------------------------------------
>
> Key: HDFS-14035
> URL: https://issues.apache.org/jira/browse/HDFS-14035
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Chen Liang
> Assignee: Chen Liang
> Priority: Major
> Attachments: HDFS-14035-HDFS-12943.001.patch,
> HDFS-14035-HDFS-12943.002.patch, HDFS-14035-HDFS-12943.003.patch
>
>
> Currently ObserverReadProxyProvider uses
> {{HAServiceProtocol#getServiceStatus}} to get the status of each NN. However
> {{HAServiceProtocol}} does not leverage delegation token. So when running an
> application on YARN and when YARN node manager makes this call
> getServiceStatus, token authentication will fail, causing the application to
> fail.
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