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https://issues.apache.org/jira/browse/HADOOP-13600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16163348#comment-16163348
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Sahil Takiar commented on HADOOP-13600:
---------------------------------------

[~ste...@apache.org] thanks for taking a look!

* Thanks for the tip with the S3Guard testing, I re-ran the tests with the 
local dynamodb enabled, tests pass
* I made some modifications so that all directories are deleted after the 
files, and they are deleted in the order returned by 
{{#listFilesAndEmptyDirectories}}
* I tried to move some stuff out into separate classes to decrease the # of 
lines
* I creates a new class called `LazyTransferManager` that lazily initializes 
the `TransferManager`

> S3a rename() to copy files in a directory in parallel
> -----------------------------------------------------
>
>                 Key: HADOOP-13600
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13600
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.7.3
>            Reporter: Steve Loughran
>            Assignee: Sahil Takiar
>         Attachments: HADOOP-13600.001.patch
>
>
> Currently a directory rename does a one-by-one copy, making the request 
> O(files * data). If the copy operations were launched in parallel, the 
> duration of the copy may be reducable to the duration of the longest copy. 
> For a directory with many files, this will be significant



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