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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-15955) declare that fs.s3a.ext. is a prefix for arbitrary extensions
Date Wed, 28 Nov 2018 15:42:00 GMT
Steve Loughran created HADOOP-15955:

             Summary: declare that fs.s3a.ext. is a prefix for arbitrary extensions
                 Key: HADOOP-15955
                 URL: https://issues.apache.org/jira/browse/HADOOP-15955
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3
    Affects Versions: 3.2.0
            Reporter: Steve Loughran

it turns out to be useful to use per-bucket config extensions for things like delegation tokens.

To avoid third-party extensions to pollute the fs.s3a. namespace with their own config options
(So meaning its inevitable things break when we add some new fs option), I propose the following

# applications/extensions MUST NOT add their own config options under fs.s3a.
# anyone is free to use "fs.s3a.ext.$product." options in s3a. 
# we promise not to go near those options in the S3A module
# it is left to people who add their own settings here to avoid clashing with others, This
is why you should use a unique product name

With this specified (where?) then if someone uses some fs.s3a. option which gets broken by
an updated s3a connector, well, we say "wontfix", —and indeed, get to tell them off for
doing this.

Propose: similar for the other stores

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