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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13336) S3A to support per-bucket configuration
Date Thu, 05 Jan 2017 17:03:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15801879#comment-15801879
] 

Chris Nauroth commented on HADOOP-13336:
----------------------------------------

+1 for the plan described in Steve's last comment.

Longer term, I wonder if we can find some commonality with other configuration prefix qualification
use cases in the codebase, e.g. the {{DFSUtil}} methods for qualifying NameNode address configuration
by nameservice in an HA or federated deployment.  Perhaps all such use cases could be handled
by common utilities.  No need to worry about this in scope of this JIRA though.  We can always
refactor later if we find commonality.

> S3A to support per-bucket configuration
> ---------------------------------------
>
>                 Key: HADOOP-13336
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13336
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.8.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>
> S3a now supports different regions, by way of declaring the endpoint —but you can't
do things like read in one region, write back in another (e.g. a distcp backup), because only
one region can be specified in a configuration.
> If s3a supported region declaration in the URL, e.g. s3a://b1.frankfurt s3a://b2.seol
, then this would be possible. 
> Swift does this with a full filesystem binding/config: endpoints, username, etc, in the
XML file. Would we need to do that much? It'd be simpler initially to use a domain suffix
of a URL to set the region of a bucket from the domain and have the aws library sort the details
out itself, maybe with some config options for working with non-AWS infra



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