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https://issues.apache.org/jira/browse/HDFS-17793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17954201#comment-17954201
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Xiping Zhang commented on HDFS-17793:
-------------------------------------
When the Router enables the asynchronous RPC feature, app fail to acquire
delegation tokens. After analysis, found the asyncRouterServer method sets up
an asynchronous callback,
!image-2025-05-27-11-04-40-734.png|width=524,height=318!
but no subsequent asynchronous processing occurs. Since token handling is now
managed at the Router and does not involve sub-cluster invocation operations,
we recommend removing the asynchronous overloaded methods (getDelegationToken,
renewDelegationToken, cancelDelegationToken) in
RouterClientNamenodeProtocolServerSideTranslatorPB, and reverting to the
original synchronous approach , because these operations do not require
interactions with sub-clusters.
> RBF: Enable the router asynchronous RPC feature to handle getDelegationToken
> request errors
> -------------------------------------------------------------------------------------------
>
> Key: HDFS-17793
> URL: https://issues.apache.org/jira/browse/HDFS-17793
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Xiping Zhang
> Assignee: Xiping Zhang
> Priority: Major
> Attachments: image-2025-05-27-10-58-55-652.png,
> image-2025-05-27-10-59-27-965.png, image-2025-05-27-11-04-40-734.png
>
>
> !image-2025-05-27-10-58-55-652.png|width=1209,height=230!
> !image-2025-05-27-10-59-27-965.png!
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