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https://issues.apache.org/jira/browse/HADOOP-14391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved HADOOP-14391.
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Resolution: Cannot Reproduce
Latest AWS SDK works this out if you don't set the endpoint.
it adds the overhead of an extra HEAD / call -that is issued with v4 signature,
if that is rejected from s3 central, the 400 error code includes the actual
region of the bucket.
> s3a: auto-detect region for bucket and use right endpoint
> ---------------------------------------------------------
>
> Key: HADOOP-14391
> URL: https://issues.apache.org/jira/browse/HADOOP-14391
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.0.0-alpha2
> Reporter: Aaron Fabbri
> Assignee: Aaron Fabbri
> Priority: Major
>
> Specifying the S3A endpoint ({{fs.s3a.endpoint}}) is
> - *required* for regions which only support v4 authentication
> - A good practice for all regions.
> The user experience of having to configure endpoints is not great. Often it
> is neglected and leads to additional cost, reduced performance, or failures
> for v4 auth regions.
> I want to explore an option which, when enabled, auto-detects the region for
> an s3 bucket and uses the proper endpoint. Not sure if this is possible or
> anyone has looked into it yet.
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