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From "Ming Ma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11035) Better documentation for maintenace mode and upgrade domain
Date Tue, 19 Sep 2017 00:21:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16170944#comment-16170944
] 

Ming Ma commented on HDFS-11035:
--------------------------------

Thanks [~ctrezzo]. I will commit it to trunk, branch-3.0 and branch-2 by EOD tomorrow in case
[~jojochuang] [~manojg] [~eddyxu] have any additional comments.

> Better documentation for maintenace mode and upgrade domain
> -----------------------------------------------------------
>
>                 Key: HDFS-11035
>                 URL: https://issues.apache.org/jira/browse/HDFS-11035
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, documentation
>    Affects Versions: 2.9.0
>            Reporter: Wei-Chiu Chuang
>            Assignee: Ming Ma
>         Attachments: HDFS-11035-2.patch, HDFS-11035.patch
>
>
> HDFS-7541 added upgrade domain and HDFS-7877 added maintenance mode. Existing documentation
about these two features are scarce and the implementation have evolved from the original
design doc. Looking at code and Javadoc and I still don't quite get how I can get datanodes
into maintenance mode/ set up a upgrade domain.
> File this jira to propose that we write an up-to-date description of these two features.



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