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https://issues.apache.org/jira/browse/HADOOP-16656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16960212#comment-16960212
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Wei-Chiu Chuang commented on HADOOP-16656:
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+1.
FCQ is mostly useful for NN RPC port.
NN service RPC port, or lifeline port are used by DataNode block report and
heartbeat, and DN always run as hdfs super user. So FCQ doesn't make sense.
> Document FairCallQueue configs in core-default.xml
> --------------------------------------------------
>
> Key: HADOOP-16656
> URL: https://issues.apache.org/jira/browse/HADOOP-16656
> Project: Hadoop Common
> Issue Type: Task
> Components: conf, documentation
> Reporter: Siyao Meng
> Assignee: Siyao Meng
> Priority: Major
> Attachments: HADOOP-16656.001.patch, HADOOP-16656.002.patch
>
>
> So far those callqueue / scheduler / faircallqueue -related configurations
> are only documented in FairCallQueue.md in 3.3.0:
> https://aajisaka.github.io/hadoop-document/hadoop-project/hadoop-project-dist/hadoop-common/FairCallQueue.html#Full_List_of_Configurations
> (Thanks Akira for uploading this.)
> Goal: Document those configs in core-default.xml as well to make it easier
> for users(admins) to find and use.
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