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https://issues.apache.org/jira/browse/HADOOP-16493?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved HADOOP-16493.
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Resolution: Duplicate
Ended up in HADOOP-13230. Not sure if I did that deliberately or not :)
> S3AFilesystem.initiateRename() can skip check on dest.parent status if src
> has same parent
> ------------------------------------------------------------------------------------------
>
> Key: HADOOP-16493
> URL: https://issues.apache.org/jira/browse/HADOOP-16493
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.3.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Minor
>
> Speedup inferred from debug logs (probably not a regression from
> HADOOP-15183, more something we'd not noticed).
> There's a check in {{initiateRename()}} to make sure the parent dir of the
> dest exists.
> If dest.getParent() is src.getParent() (i.e. a same dire rename) or is any
> other ancestor, we don't need those HEAD/LIST requests.
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