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https://issues.apache.org/jira/browse/HDFS-9574?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kihwal Lee resolved HDFS-9574.
------------------------------
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 2.6.4
                   2.7.3
                   3.0.0

> Reduce client failures during datanode restart
> ----------------------------------------------
>
>                 Key: HDFS-9574
>                 URL: https://issues.apache.org/jira/browse/HDFS-9574
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>             Fix For: 3.0.0, 2.7.3, 2.6.4
>
>         Attachments: HDFS-9574.patch, HDFS-9574.v2.patch, 
> HDFS-9574.v3.br26.patch, HDFS-9574.v3.br27.patch, HDFS-9574.v3.patch
>
>
> Since DataXceiverServer is initialized before BP is fully up, client requests 
> will fail until the datanode registers.



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