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https://issues.apache.org/jira/browse/HDFS-10789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15569954#comment-15569954
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Kihwal Lee commented on HDFS-10789:
-----------------------------------

I remember we had to fix one bug after this feature. Filed HDFS-11000.

> 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
>             Fix For: 2.8.0, 3.0.0-alpha2
>
>         Attachments: HDFS-10789-1.patch, HDFS-10789-2.patch, 
> HDFS-10789-3.patch, HDFS-10789-4.patch, HDFS-10789-5.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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