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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HADOOP-15191) Add Private/Unstable BulkDelete operations to FS/S3A for DistCP
Date Thu, 25 Jan 2018 06:11:00 GMT

     [ 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

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