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From "Xiao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-10225) DataNode hot swap drives should disallow storage type changes.
Date Fri, 22 Jul 2016 00:01:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15388642#comment-15388642
] 

Xiao Chen edited comment on HDFS-10225 at 7/21/16 11:59 PM:
------------------------------------------------------------

Committed to trunk, thanks [~eddyxu] for the contribution and [~cmccabe] , [~arpitagarwal]
for reviews!

[~eddyxu], do you want to target this for earlier branches? This is incompatible in behavior,
but changing storage type doesn't work currently. So I think it's okay to backport if there's
a need. (Not sure if I should check the 'Imcompatible' flag here or not.


was (Author: xiaochen):
Committed to trunk, thanks [~eddyxu] for the contribution and [~cmccabe] , [~arpitagarwal]
for reviews!

[~eddyxu], do you want to target this for earlier branches? This is incompatible in behavior,
but also doesn't work for 2.8.0. So I think it's okay to backport if there's a need. (Not
sure if I should check the 'Imcompatible' flag here or not.

> DataNode hot swap drives should disallow storage type changes. 
> ---------------------------------------------------------------
>
>                 Key: HDFS-10225
>                 URL: https://issues.apache.org/jira/browse/HDFS-10225
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.7.2
>            Reporter: Lei (Eddy) Xu
>            Assignee: Lei (Eddy) Xu
>             Fix For: 3.0.0-alpha2
>
>         Attachments: HDFS-10225.000.patch, HDFS-10225.001.patch, HDFS-10225.002.patch,
HDFS-10225.003.patch
>
>
> The current hot swap code only differentiate data dirs by their paths. People might want
to change the types of certain data dirs from the default value in an existing cluster.



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