Steve Loughran created HADOOP-15191:
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Summary: Add Private/Unstable BulkDelete operations to FS/S3A 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
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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