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https://issues.apache.org/jira/browse/HDFS-13699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16808186#comment-16808186
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Chen Liang commented on HDFS-13699:
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Post v010 patch with one additional unused import fix.
> Add DFSClient sending handshake token to DataNode, and allow DataNode
> overwrite downstream QOP
> ----------------------------------------------------------------------------------------------
>
> Key: HDFS-13699
> URL: https://issues.apache.org/jira/browse/HDFS-13699
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Chen Liang
> Assignee: Chen Liang
> Priority: Major
> Attachments: HDFS-13699.001.patch, HDFS-13699.002.patch,
> HDFS-13699.003.patch, HDFS-13699.004.patch, HDFS-13699.005.patch,
> HDFS-13699.006.patch, HDFS-13699.007.patch, HDFS-13699.008.patch,
> HDFS-13699.009.patch, HDFS-13699.010.patch, HDFS-13699.WIP.001.patch
>
>
> Given the other Jiras under HDFS-13541, this Jira is to allow DFSClient to
> redirect the encrypt secret to DataNode. The encrypted message is the QOP
> that client and NameNode have used. DataNode decrypts the message and enforce
> the QOP for the client connection. Also, this Jira will also include
> overwriting downstream QOP, as mentioned in the HDFS-13541 design doc.
> Namely, this is to allow inter-DN QOP that is different from client-DN QOP.
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