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https://issues.apache.org/jira/browse/HDFS-16703?focusedWorklogId=797055&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-797055
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ASF GitHub Bot logged work on HDFS-16703:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 01/Aug/22 23:30
            Start Date: 01/Aug/22 23:30
    Worklog Time Spent: 10m 
      Work Description: ZanderXu commented on PR #4660:
URL: https://github.com/apache/hadoop/pull/4660#issuecomment-1201838947

   @goiri Sir, can you help me review this patch?  Thanks
   In our prod environment, we encountered the RBF NameNodeHeartbeatServices 
thread being blocked for a long time because one of the NameNode machine 
crashed. So I think this PR will also have an effect on RBF.




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

    Worklog Id:     (was: 797055)
    Time Spent: 1h 20m  (was: 1h 10m)

> Enable RPC Timeout for some protocols of NameNode.
> --------------------------------------------------
>
>                 Key: HDFS-16703
>                 URL: https://issues.apache.org/jira/browse/HDFS-16703
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: ZanderXu
>            Assignee: ZanderXu
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> When I read some code about protocol, I found that only 
> ClientNamenodeProtocolPB proxy with RPC timeout, other protocolPB proxy 
> without RPC timeout, such as RefreshAuthorizationPolicyProtocolPB, 
> RefreshUserMappingsProtocolPB, RefreshCallQueueProtocolPB, 
> GetUserMappingsProtocolPB and NamenodeProtocolPB.
>  
> If proxy without rpc timeout,  it will be blocked for a long time if the NN 
> machine crash or bad network during writing or reading with NN. 
>  
> So I feel that we should enable RPC timeout for all ProtocolPB.



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