[jira] [Commented] (HADOOP-18544) S3A: add option to disable probe for dir marker recreation on delete/rename.

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-18544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17684537#comment-17684537 ] 

ASF GitHub Bot commented on HADOOP-18544:
-----------------------------------------

HarshitGupta11 opened a new pull request, #5354:
URL: https://github.com/apache/hadoop/pull/5354

   
   
   ### Description of PR
   In applications which do many single-file deletions on the same dir, a lot of time is wasted in maybeCreateFakeParentDirectory().
   
   Proposed: add an option to disable the probe, for use by applications which are happy for parent dirs to sometimes disappear after a cleanup.
   
   file by file delete is still woefully inefficient because of the HEAD request on every file, but there's no need to amplify the damage.
   
   
   
   ### How was this patch tested?
   The patch was tested against s3 bucket in US-West 2
   
   ### For code changes:
   ##Caveats:
   Parent directories might disappear on delete or on renames.
   ##What breaks:
   The rename tests are failing for the FileContext renames as both S3AFileSystem and the FileContext have different probes and different rules.
   
   - [ ] Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
   - [ ] Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation?
   - [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under [ASF 2.0](http://www.apache.org/legal/resolved.html#category-a)?
   - [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`, `NOTICE-binary` files?
   
   




> S3A: add option to disable probe for dir marker recreation on delete/rename.
> ----------------------------------------------------------------------------
>
>                 Key: HADOOP-18544
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18544
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.3.4
>            Reporter: Steve Loughran
>            Assignee: Harshit Gupta
>            Priority: Major
>
> In applications which do many single-file deletions on the same dir, a lot of time is wasted in {{maybeCreateFakeParentDirectory()}}.
> Proposed: add an option to disable the probe, for use by applications which are happy for parent dirs to sometimes disappear after a cleanup.
> file by file delete is still woefully inefficient because of the HEAD request on every file, but there's no need to amplify the damage.



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