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https://issues.apache.org/jira/browse/HADOOP-15191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran updated HADOOP-15191:
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Attachment: HADOOP-15191-004.patch
> Add Private/Unstable BulkDelete operations to supporting object stores for
> DistCP
> ---------------------------------------------------------------------------------
>
> Key: HADOOP-15191
> URL: https://issues.apache.org/jira/browse/HADOOP-15191
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3, tools/distcp
> Affects Versions: 2.9.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
> Attachments: HADOOP-15191-001.patch, HADOOP-15191-002.patch,
> HADOOP-15191-003.patch, HADOOP-15191-004.patch
>
>
> Large scale DistCP with the -delete option doesn't finish in a viable time
> because of the final CopyCommitter doing a 1 by 1 delete of all missing
> files. This isn't randomized (the list is sorted), and it's throttled by AWS.
> If bulk deletion of files was exposed as an API, distCP would do 1/1000 of
> the REST calls, so not get throttled.
> Proposed: add an initially private/unstable interface for stores,
> {{BulkDelete}} which declares a page size and offers a
> {{bulkDelete(List<Path>)}} operation for the bulk deletion.
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