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https://issues.apache.org/jira/browse/HDFS-17588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17896252#comment-17896252
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ASF GitHub Bot commented on HDFS-17588:
---------------------------------------

hadoop-yetus commented on PR #6956:
URL: https://github.com/apache/hadoop/pull/6956#issuecomment-2461859810

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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> RBF: RouterObserverReadProxyProvider should perform an msync before executing 
> the first read.
> ---------------------------------------------------------------------------------------------
>
>                 Key: HDFS-17588
>                 URL: https://issues.apache.org/jira/browse/HDFS-17588
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: rbf
>            Reporter: fuchaohong
>            Priority: Major
>              Labels: pull-request-available
>
> When using RouterObserverReadProxyProvider to initiate the first RPC request, 
> the router routes this RPC to the active namenode and updates the stateid of 
> the corresponding nameservice. However, the stateid of other nameservices is 
> not updated. Clients should first perform msync to update the stateid of all 
> nameservices with enabled Observers before executing the first read.



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