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https://issues.apache.org/jira/browse/HDFS-10789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15543295#comment-15543295
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Daryn Sharp commented on HDFS-10789:
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The ACL authorization is currently only checked when processing the IPC
connection context as part of the connection lifecycle prior to reading calls.
Webhdfs has no connection context. I think applying common ACLs to webhdfs
would be a useful feature but as a separate jira. Most likely it should be a
change in the webhdfs servlet.
> Route webhdfs through the RPC call queue
> ----------------------------------------
>
> Key: HDFS-10789
> URL: https://issues.apache.org/jira/browse/HDFS-10789
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: ipc, webhdfs
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Attachments: HDFS-10789-1.patch, HDFS-10789.patch
>
>
> Webhdfs is extremely expensive under load and is not subject to the QoS
> benefits of the RPC call queue. HADOOP-13537 provides the basis for routing
> webhdfs through the call queue to provide unified QoS.
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