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https://issues.apache.org/jira/browse/HADOOP-12856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15172092#comment-15172092
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Steve Loughran commented on HADOOP-12856:
-----------------------------------------
Note how the stack trace shows that this happens in {{RawLocalFS.rename()}}.
The code has been able to get through the contract tests as the
RawLocalContract tests were actually using the contract in localfs.xml, not
rawlocal.xml, and it's contract options say
{{fs.contract.supports-strict-exceptions=false}},
> FileUtil.checkDest() to throw PathExistsException and
> PathIsDirectoryException when appropriate
> -----------------------------------------------------------------------------------------------
>
> Key: HADOOP-12856
> URL: https://issues.apache.org/jira/browse/HADOOP-12856
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 2.8.0
> Reporter: Steve Loughran
>
> {{FileUtil.checkDest()}} throws IOEs when its conditions are not met, with
> meaningful text.
> The code could be improved if it were to throw {{PathExistsException}} and
> {{PathIsDirectoryException}} when appropriate
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