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Posted to hdfs-issues@hadoop.apache.org by "Xiangyi Zhu (Jira)" <ji...@apache.org> on 2022/01/13 04:42:00 UTC

[jira] [Created] (HDFS-16421) RouterRpcFairnessConstants remove ConcurrentNS

Xiangyi Zhu created HDFS-16421:
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             Summary: RouterRpcFairnessConstants remove ConcurrentNS 
                 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


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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