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https://issues.apache.org/jira/browse/HADOOP-12484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gaurav Kanade updated HADOOP-12484:
-----------------------------------
Attachment: HADOOP-12484.04.patch
> Single File Rename Throws Incorrectly In Potential Race Condition Scenarios
> ---------------------------------------------------------------------------
>
> Key: HADOOP-12484
> URL: https://issues.apache.org/jira/browse/HADOOP-12484
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools
> Reporter: Gaurav Kanade
> Assignee: Gaurav Kanade
> Attachments: HADOOP-12484.01.patch, HADOOP-12484.02.patch,
> HADOOP-12484.03.patch, HADOOP-12484.04.patch
>
>
> FinishSingleFileRename function - in the case where src and dst both exist
> gets a lease on src blob to block write access and then deletes the file.
> However in the time between checking existence of source file and acquiring
> lease the file may be deleted by another process (race condition). Presently
> the function simply throws in this scenario. In this case the function should
> treat this as a case where rename is complete; i.e. catch the exception and
> if this is the cause exit gracefully with the result that the rename is
> complete
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