Min,

Are you calculating the MD5 or letting the Amazon client do it?

Thanks,
-John

On Jun 6, 2013, at 4:54 PM, Min Chen <min.c...@citrix.com> wrote:

> Thanks Tom. Indeed I have a S3 question that need some advise from some S3
> experts. To support upload object > 5G, I have used TransferManager.upload
> to upload object to S3, upload went fine and object are successfully put
> to S3. However, later on when I am using "s3cmd get <object key>" to
> retrieve this object, I always got this exception:
> 
> "MD5 signatures do not match: computed=Y, received="X"
> 
> It seems that Amazon S3 kept a different Md5 sum for the multi-part
> uploaded object. We have been using Riak CS for our S3 testing. If I
> changed to not using multi-part upload and directly invoking S3 putObject,
> I will not run into this issue. Do you have such experience before?
> 
> -min
> 
> On 6/6/13 1:56 AM, "Thomas O'Dowd" <tpod...@cloudian.com> wrote:
> 
>> Thanks Min. I've printed out the material and am reading new threads.
>> Can't comment much yet until I understand things a bit more.
>> 
>> Meanwhile, feel free to hit me up with any S3 questions you have. I'm
>> looking forward to playing with the object_store branch and testing it
>> out.
>> 
>> Tom.
>> 
>> On Wed, 2013-06-05 at 16:14 +0000, Min Chen wrote:
>>> Welcome Tom. You can check out this FS
>>> 
>>> https://cwiki.apache.org/confluence/display/CLOUDSTACK/Storage+Backup+Obj
>>> ec
>>> t+Store+Plugin+Framework for secondary storage architectural work done
>>> in
>>> object_store branch.You may also check out the following recent threads
>>> regarding 3 major technical questions raised by community as well as our
>>> answers and clarification.
>>> 
>>> http://mail-archives.apache.org/mod_mbox/cloudstack-dev/201306.mbox/%3C77
>>> B3
>>> 37AF224FD84CBF8401947098DD87036A76%40SJCPEX01CL01.citrite.net%3E
>>> 
>>> http://mail-archives.apache.org/mod_mbox/cloudstack-dev/201306.mbox/%3CCD
>>> D2
>>> 2955.3DDDC%25min.chen%40citrix.com%3E
>>> 
>>> http://mail-archives.apache.org/mod_mbox/cloudstack-dev/201306.mbox/%3CCD
>>> D2
>>> 300D.3DE0C%25min.chen%40citrix.com%3E
>>> 
>>> 
>>> That branch is mainly worked on by Edison and me, and we are at PST
>>> timezone. 
>>> 
>>> Thanks
>>> -min
>> -- 
>> Cloudian KK - http://www.cloudian.com/get-started.html
>> Fancy 100TB of full featured S3 Storage?
>> Checkout the Cloudian® Community Edition!
>> 
> 

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