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https://issues.apache.org/jira/browse/HADOOP-7195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16409576#comment-16409576
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Andras Bokor commented on HADOOP-7195:
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The fallback logic is to cover cross volume renames. Pls check HADOOP-13082 for
the details.
> RawLocalFileSystem.rename() should not try to do copy
> -----------------------------------------------------
>
> Key: HADOOP-7195
> URL: https://issues.apache.org/jira/browse/HADOOP-7195
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.20.2, 0.21.0
> Reporter: Kang Xiao
> Priority: Major
> Attachments: HADOOP-7195-v2.patch, HADOOP-7195-v2.patch,
> HADOOP-7195.patch
>
>
> RawLocalFileSystem.rename() try to copy file if fails to call rename of java
> File. It's really confusing to do copy in a rename interface. For example
> rename(/a/b/c, /e/f/g) will invoke the copy if /e/f does not exist.
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