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https://issues.apache.org/jira/browse/HADOOP-13162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15289553#comment-15289553
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Steve Loughran commented on HADOOP-13162:
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you should think about including rename here, as on s3 rename is about mkdirs,
copies and deletes.
consider a sequence like
{code}
mkdir d1/d2/d3/
touch file d1/d2/f.txt
assert is dir d1/d2
assert is dir d1/d2/d3
touch d1/d2/d3/f2.txt
assert is dir d1/d2
assert is dir d1/d2/d3
rename d1/d2/d3 d1/d4
assert is dir d1/d4
assert exists d1/d4/f2.txt
rename d1/d2 s1/d4
assert is dir d1/d4
assert is dir d1/d4/d2
assert exists d1/d4/d2/f2.txt
{code}
> Consider reducing number of getFileStatus calls in S3AFileSystem.mkdirs
> -----------------------------------------------------------------------
>
> Key: HADOOP-13162
> URL: https://issues.apache.org/jira/browse/HADOOP-13162
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Rajesh Balamohan
> Priority: Minor
> Attachments: HADOOP-13162-branch-2-002.patch, HADOOP-13162.001.patch
>
>
> getFileStatus is relatively expensive call and mkdirs invokes it multiple
> times depending on how deep the directory structure is. It would be good to
> reduce the number of getFileStatus calls in such cases.
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