[jira] [Commented] (HADOOP-17981) Support etag-assisted renames in FileOutputCommitter

["Mehakmeet Singh (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-17981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17490711#comment-17490711 ] 

Mehakmeet Singh commented on HADOOP-17981:
------------------------------------------

[~stevel@apache.org], for 1st point, did you mean to refer: HADOOP-17979. Might have mistyped, adding this for future ref.

> Support etag-assisted renames in FileOutputCommitter
> ----------------------------------------------------
>
>                 Key: HADOOP-17981
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17981
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs, fs/azure
>    Affects Versions: 3.4.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 12h 40m
>  Remaining Estimate: 0h
>
> To deal with some throttling/retry issues in object stores,
> pass the FileStatus entries retrieved during listing
> into a private interface ResilientCommitByRename which filesystems
> may implement to use extra attributes in the listing (etag, version)
> to constrain and validate the operation.
> Although targeting azure, GCS and others could use. no point in S3A as they shouldn't use this committer.
> # And we are not going to do any changes to FileSystem as there are explicit guarantees of public use and stability.
> I am not going to make that change as the hive thing that will suddenly start expecting it to work forever.
> # I'm not planning to merge this in, as the manifest committer is going to include this and more (MAPREDUCE-7341)
> However, I do need to get this in on a branch, so am doing this work on trunk for dev & test and for others to review



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