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https://issues.apache.org/jira/browse/HDFS-16421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangyi Zhu updated HDFS-16421:
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Summary: Remove RouterRpcFairnessPolicyController ConcurrentNS to avoid
renewLease being unavailable (was: RouterRpcFairnessPolicyController remove
ConcurrentNS )
> Remove RouterRpcFairnessPolicyController ConcurrentNS to avoid renewLease
> being unavailable
> -------------------------------------------------------------------------------------------
>
> Key: HDFS-16421
> URL: https://issues.apache.org/jira/browse/HDFS-16421
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: rbf
> Affects Versions: 3.4.0
> Reporter: Xiangyi Zhu
> Assignee: Xiangyi Zhu
> Priority: Major
>
> When using the RouterRpcFairnessConstants strategy, if the NamNode rpc is
> slow or does not respond, it is easy to use up the concurrent available
> handlers, and the client will not be able to renewLease normally.
> I think CONCURRENT_NS can be removed. When there is an rpc of CONCURRENT, we
> traverse each NS to apply for the corresponding Handler, instead of just
> applying for one Handler like CONCURRENT.
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