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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2018/01/25 06:11:00 UTC

[jira] [Assigned] (HADOOP-15191) Add Private/Unstable BulkDelete operations to FS/S3A for DistCP

     [ https://issues.apache.org/jira/browse/HADOOP-15191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran reassigned HADOOP-15191:
---------------------------------------

    Assignee: Steve Loughran

> 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
>            Assignee: Steve Loughran
>            Priority: Major
>
> 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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