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https://issues.apache.org/jira/browse/HDFS-16015?focusedWorklogId=598645&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-598645
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ASF GitHub Bot logged work on HDFS-16015:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 18/May/21 15:29
            Start Date: 18/May/21 15:29
    Worklog Time Spent: 10m 
      Work Description: goiri commented on pull request #2992:
URL: https://github.com/apache/hadoop/pull/2992#issuecomment-843271736


   This has the same issue as discussed in HDFS-13248.
   Having to modify the lower levels of hadoop-commons is an indication.
   We need to get to an agreement before moving forward with this.
   The effort on HADOOP-16254 would be the way to go.
   
   @Hexiaoqiao and @ayushtkn gave it a try last, we can try to see if we can 
get to an agreement again.


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

    Worklog Id:     (was: 598645)
    Time Spent: 50m  (was: 40m)

> RBF: Read and write data through router select dn according to real user ip
> ---------------------------------------------------------------------------
>
>                 Key: HDFS-16015
>                 URL: https://issues.apache.org/jira/browse/HDFS-16015
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: rbf
>    Affects Versions: 3.3.1, 3.4.0
>            Reporter: zhu
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> Read and write data through router select dn according to real user ip.
> relates to HDFS-13248
> *General train of thought:*
> 1. RouterRpcClient set the real user ip to CallerContext.
> 2. The Server processes the Rpc to check whether the CallerContext contains 
> the real user ip field, if it contains the real user IP and verify the 
> legitimacy of the ip, if the verification passes, set the real IP to the Call.
> 3. Modify the getClientMachine method, if there is a real user ip in the 
> Call, return the real user ip, if it does not return the server to monitor 
> the IP.



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