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From Min Chen <min.c...@citrix.com>
Subject Re: Object based Secondary storage.
Date Thu, 06 Jun 2013 20:54:59 GMT
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" <tpodowd@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
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>Checkout the Cloudian® Community Edition!
>


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