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https://issues.apache.org/jira/browse/HADOOP-4806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12654697#action_12654697
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Tsz Wo (Nicholas), SZE commented on HADOOP-4806:
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In LeaseManager.changeLease(...), the variable overwrite is not a regular
expression pattern but is used as a regular expression pattern in
{code}
final String newpath = oldpath.replaceFirst(overwrite, replaceBy);
{code}
> HDFS rename does not work correctly if src contains Java regular expression
> special characters
> ----------------------------------------------------------------------------------------------
>
> Key: HADOOP-4806
> URL: https://issues.apache.org/jira/browse/HADOOP-4806
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.18.2
> Reporter: Tsz Wo (Nicholas), SZE
>
> For examples,
> # create a file /a+b/foo but not close it
> # rename /a+b/foo to /a+b/bar/foo
> Then, the corresponding INodeFileUnderConstruction will be moved from
> /a+b/foo to /a+b/bar/foo but the lease path remains unchanged.
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