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https://issues.apache.org/jira/browse/HADOOP-15182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16333471#comment-16333471
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Steve Loughran commented on HADOOP-15182:
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Yonger: when did v2 support go away?
> 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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