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https://issues.apache.org/jira/browse/HDFS-6198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13962218#comment-13962218
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Haohui Mai commented on HDFS-6198:
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Is {{Pattern.quote(File.separator)}} going to be {{\}} in Windows? If so then
the regex should be invalid. Am I correct?
> 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
>
>
> 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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