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https://issues.apache.org/jira/browse/HADOOP-17165?focusedWorklogId=480596&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-480596
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ASF GitHub Bot logged work on HADOOP-17165:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 09/Sep/20 05:23
            Start Date: 09/Sep/20 05:23
    Worklog Time Spent: 10m 
      Work Description: tasanuma commented on a change in pull request #2240:
URL: https://github.com/apache/hadoop/pull/2240#discussion_r485345171



##########
File path: 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/DecayRpcScheduler.java
##########
@@ -178,6 +188,7 @@
   private static final double PRECISION = 0.0001;
   private MetricsProxy metricsProxy;
   private final CostProvider costProvider;
+  private Set<String> serviceUsernames;

Review comment:
       Thanks for your review. Updated PR following `UserName`.




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 480596)
    Time Spent: 1h 40m  (was: 1.5h)

> 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
>         Attachments: HADOOP-17165.001.patch, HADOOP-17165.002.patch, 
> after.png, before.png
>
>          Time Spent: 1h 40m
>  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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