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From "Chao Sun (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12975) Changes to the NameNode to support reads from standby
Date Fri, 23 Feb 2018 04:34:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16373919#comment-16373919
] 

Chao Sun commented on HDFS-12975:
---------------------------------

OK, sounds good. I'll post a patch soon without the failover change. Will also create a separate
Jira for the issue.

> Changes to the NameNode to support reads from standby
> -----------------------------------------------------
>
>                 Key: HDFS-12975
>                 URL: https://issues.apache.org/jira/browse/HDFS-12975
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Konstantin Shvachko
>            Assignee: Chao Sun
>            Priority: Major
>         Attachments: HDFS-12975.000.patch
>
>
> In order to support reads from standby NameNode needs changes to add Observer role, turn
off checkpointing and such.



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