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https://issues.apache.org/jira/browse/HADOOP-15182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16335086#comment-16335086
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Steve Loughran commented on HADOOP-15182:
-----------------------------------------

Don't apologise: if it's hard to find that's a defect in the docs. We get lazy 
with the source in front of us.

Why not submit a patch with some improvements to the docs? Maybe a section 
"working with third party S3 stores". [~ehiggs] would no doubt help review

> Support to change back to signature version 2 of AWS SDK
> --------------------------------------------------------
>
>                 Key: HADOOP-15182
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15182
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs/s3
>    Affects Versions: 2.9.0
>         Environment:  
>  
>  
>            Reporter: Yonger
>            Priority: Minor
>
> Current s3a depend on  aws-java-sdk-bundle-1.11.199 which use signature v4. 
> So for some s3-compatible system(Ceph) which still using v2, Hadoop can't 
> work on them.
> s3cmd can use v2 via specify option like :
> {code:java}
> s3cmd --signature-v2 ls s3://xxx/{code}
>  
> maybe we can add a parameter to allow back to use signature v2 in s3a.



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