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https://issues.apache.org/jira/browse/HADOOP-14620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16073954#comment-16073954
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Steve Loughran commented on HADOOP-14620:
-----------------------------------------
This is odd: we do test against other endpoints, as that's the only way to test
v4 auth & so connect to buckets in frankfurt or london.
> 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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