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https://issues.apache.org/jira/browse/HADOOP-13600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16159377#comment-16159377
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Sahil Takiar commented on HADOOP-13600:
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Rebased this patch and made some bug fixes:
* Details of how the code work are in the PR:
https://github.com/apache/hadoop/pull/157
* Ran the existing tests (except for the S3Guard ITests because I need to get
DynamoDb access)
** Ran the unit tests, itests, and scale tests and they all pass
** There seems to already be an existing scale test that stresses this part of
the code {{ITestS3ADeleteManyFiles#testBulkRenameAndDelete}} creates a bunch of
files and then renames them
* I haven't written other ITests because wanted to get some input on whether
additional ones are necessary
* Planning to add some unit tests (using lots of mocks) once I get a thumbs up
on the overall approach
[~fabbri], [~mackrorysd] could you take a look?
> 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
>
> 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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