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https://issues.apache.org/jira/browse/JCLOUDS-457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14033145#comment-14033145
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ASF subversion and git services commented on JCLOUDS-457:
---------------------------------------------------------

Commit 30c6e6477f5918299bee64e4adbc324ff7fb6fd5 in jclouds-labs-aws's branch 
refs/heads/master from Roman C. Coedo
[ https://git-wip-us.apache.org/repos/asf?p=jclouds-labs-aws.git;h=30c6e64 ]

JCLOUDS-457: Added TreeHash util class and its test.

The TreeHash class stores two HashCodes, the linear and the
tree HashCode. The TreeHash class also has an static inner class
named Hasher, which allows us to calculate the hashes.

Both Hashes (tree and linear) are needed for the upload archive
and the multipart upload operations. When completing a multipart
upload operation we also need to calculate the tree hash of the
individual part's hashes.


> Amazon Glacier support
> ----------------------
>
>                 Key: JCLOUDS-457
>                 URL: https://issues.apache.org/jira/browse/JCLOUDS-457
>             Project: jclouds
>          Issue Type: New Feature
>          Components: jclouds-blobstore
>            Reporter: Andrew Gaul
>              Labels: gsoc2014
>
> jclouds should support Amazon Glacier which provides a different 
> price/availability trade off than traditional blobstores.  Note that this 
> will require some thought for how to handle blob reads.



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