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https://issues.apache.org/jira/browse/HDFS-10225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15390282#comment-15390282
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Xiao Chen commented on HDFS-10225:
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Committed to branch-2 and branch-2.8, compiled and passed the test before
pushing. Thanks!
> 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: 2.8.0, 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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