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https://issues.apache.org/jira/browse/HDFS-17588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18021978#comment-18021978
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ASF GitHub Bot commented on HDFS-17588:
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github-actions[bot] closed pull request #6956: HDFS-17588. RBF:
RouterObserverReadProxyProvider should perform an msync before executing the
first read.
URL: https://github.com/apache/hadoop/pull/6956
> 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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