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https://issues.apache.org/jira/browse/HDFS-6198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13962252#comment-13962252
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Arpit Agarwal commented on HDFS-6198:
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+1 for the updated patch, pending Jenkins.
Thanks for finding and fixing it Chris.
> DataNode rolling upgrade does not correctly identify current block pool
> directory and replace with trash on Windows.
> --------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-6198
> URL: https://issues.apache.org/jira/browse/HDFS-6198
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 3.0.0, 2.4.0
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-6198.1.patch, HDFS-6198.2.patch
>
>
> For rolling upgrade, the DataNode uses a regex to identify the current block
> pool directory and replace it with the equivalent trash directory. This
> regex hard-codes '/' as the file path separator, which doesn't work on
> Windows.
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