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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-13433) webhdfs requests can be routed incorrectly in federated cluster
Date Thu, 12 Apr 2018 23:54:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16436499#comment-16436499

Arpit Agarwal commented on HDFS-13433:

Thanks for the review [~ajayydv]! I left the log message text the same as it is now for compatibility.

[~kihwal], could you please take a look too. This change should not affect IP-failover setup
which you brought up in HDFS-6329, but would appreciate your review just to make sure.

> webhdfs requests can be routed incorrectly in federated cluster
> ---------------------------------------------------------------
>                 Key: HDFS-13433
>                 URL: https://issues.apache.org/jira/browse/HDFS-13433
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>            Priority: Critical
>         Attachments: HDFS-13433.01.patch, HDFS-13433.02.patch, HDFS-13433.03.patch
> In the following HA+Federated setup with two nameservices ns1 and ns2:
> # ns1 -> namenodes nn1, nn2
> # ns2 -> namenodes nn3, nn4
> # fs.defaultFS is {{hdfs://ns1}}.
> A webhdfs request issued to nn3/nn4 will be routed to ns1. This is because {{setClientNamenodeAddress}}
initializes {{NameNode#clientNamenodeAddress}} using fs.defaultFS before the config is overriden.

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