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https://issues.apache.org/jira/browse/HADOOP-17165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17221310#comment-17221310
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Takanobu Asanuma commented on HADOOP-17165:
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[~Symious] Thanks for your feedback.
Presto can impersonate the end user when accessing HDFS. Please see the
following document. It would go well with service-user feature.
https://prestodb.io/docs/current/connector/hive-security.html#end-user-impersonation
> Implement service-user feature in DecayRPCScheduler
> ---------------------------------------------------
>
> Key: HADOOP-17165
> URL: https://issues.apache.org/jira/browse/HADOOP-17165
> Project: Hadoop Common
> Issue Type: New Feature
> Reporter: Takanobu Asanuma
> Assignee: Takanobu Asanuma
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Attachments: HADOOP-17165.001.patch, HADOOP-17165.002.patch,
> after.png, before.png
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> In our cluster, we want to use FairCallQueue to limit heavy users, but not
> want to restrict certain users who are submitting important requests. This
> jira proposes to implement the service-user feature that the user is always
> scheduled high-priority queue.
> According to HADOOP-9640, the initial concept of FCQ has this feature, but
> not implemented finally.
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