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https://issues.apache.org/jira/browse/HADOOP-14620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16074495#comment-16074495
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Steve Loughran commented on HADOOP-14620:
-----------------------------------------
the sole difference is that in the second case the per-bucket option is being
copied in on top of the default fs.s3a.endpoint option...we've added that
precisely so you can define things like different endpoints for different
buckets. The default endpoint value in {{fs.s3a.endpoint}} is the one which
gets used when there isn't a per bucket override going on,
If you've got the time, stepping through what's going on in S3A would be
useful. I suspect maybe there's a default value somewhere in your site configs,
or indeed, the core-default one, which is not letting the one you've set on the
classpath through. Of course, you know have an immediate fix to your problem...
> S3A authentication failure for regions other than us-east-1
> -----------------------------------------------------------
>
> Key: HADOOP-14620
> URL: https://issues.apache.org/jira/browse/HADOOP-14620
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/s3
> Affects Versions: 2.8.0, 2.7.3
> Reporter: Ilya Fourmanov
> Attachments: s3-403.txt
>
>
> hadoop fs s3a:// operations fail authentication for s3 buckets hosted in
> regions other than default us-east-1
> Steps to reproduce:
> # create s3 bucket in eu-west-1
> # Using IAM instance profile or fs.s3a.access.key/fs.s3a.secret.key run
> following command:
> {code}
> hadoop --loglevel DEBUG -D fs.s3a.endpoint=s3.eu-west-1.amazonaws.com -ls
> s3a://your-eu-west-1-hosted-bucket/
> {code}
> Expected behaviour:
> You will see listing of the bucket
> Actual behaviour:
> You will get 403 Authentication Denied response for AWS S3.
> Reason is mismatch in string to sign as defined in
> http://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html
> provided by hadoop and expected by AWS.
> If you use https://aws.amazon.com/code/199 to analyse StringToSignBytes
> returned by AWS, you will see that AWS expects CanonicalizedResource to be in
> form
> /your-eu-west-1-hosted-bucket{color:red}.s3.eu-west-1.amazonaws.com{color}/.
> Hadoop provides it as /your-eu-west-1-hosted-bucket/
> Note that AWS documentation doesn't explicitly state that endpoint or full
> dns address should be appended to CanonicalizedResource however practice
> shows it is actually required.
> I've also submitted this to AWS for them to correct behaviour or
> documentation.
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