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From "Chao Sun (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-13749) Use getServiceStatus to discover observer namenodes
Date Fri, 31 Aug 2018 07:26:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16598358#comment-16598358

Chao Sun commented on HDFS-13749:

Thanks [~xkrogen] and [~shv].

Good to know that connections can be re-used. Yes, I think it's better to go with {{NameNodeProxies#createNonHAProxy()}}
and add a new clause for {{HAServiceProtocol}}.  I haven't checked HDFS-13779 - will build
this on top of it.

> Use getServiceStatus to discover observer namenodes
> ---------------------------------------------------
>                 Key: HDFS-13749
>                 URL: https://issues.apache.org/jira/browse/HDFS-13749
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Chao Sun
>            Assignee: Chao Sun
>            Priority: Major
>         Attachments: HDFS-13749-HDFS-12943.000.patch
> In HDFS-12976 currently we discover NameNode state by calling {{reportBadBlocks}} as
a temporary solution. Here, we'll properly implement this by using {{HAServiceProtocol#getServiceStatus}}.

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