MAX_BLOB_FETCH_SIZE value

[Daniel Hans]

Hi there, 

I have been trying to use MAX_BLOB_FETCH_SIZE to determine maximal size of blobs that may be uploaded by the users. It is documented to be around 32 MB here [0] but the real value is actually less than one megabyte [1]. Could anyone explain the difference to me or it is an issue and we should create a new one for this? I can confirm that we do store larger files.

Thank you,

Daniel

[0] https://developers.google.com/appengine/docs/python/blobstore/overview#Introducing_the_Blobstore

[1] http://code.google.com/p/googleappengine/source/browse/trunk/python/google/appengine/api/blobstore/blobstore.py#83

[Stuart Langley]

This is the maximum size that can be fetched in a single call using BlobReader (https://developers.google.com/appengine/docs/python/blobstore/blobreaderclass) - The blob size that can be uploaded by users is effectively unlimited. 

[Daniel Hans]

Hi Stuart,

On Thu, Aug 30, 2012 at 1:07 AM, Stuart Langley <slan...@google.com> wrote:

This is the maximum size that can be fetched in a single call using BlobReader (https://developers.google.com/appengine/docs/python/blobstore/blobreaderclass) - The blob size that can be uploaded by users is effectively unlimited. 

thanks for your reply. As I understand, if a file is larger than this value, more than one call is needed. Where does 32 MB value, which is mentioned in documentation [0], come from? 

 

[0] https://developers.google.com/appengine/docs/python/blobstore/overview

Best,

Daniel

On Thursday, 30 August 2012 05:05:56 UTC+10, Daniel Hans wrote:

Hi there, 

I have been trying to use MAX_BLOB_FETCH_SIZE to determine maximal size of blobs that may be uploaded by the users. It is documented to be around 32 MB here [0] but the real value is actually less than one megabyte [1]. Could anyone explain the difference to me or it is an issue and we should create a new one for this? I can confirm that we do store larger files.

Thank you,

Daniel

[0] https://developers.google.com/appengine/docs/python/blobstore/overview#Introducing_the_Blobstore

[1] http://code.google.com/p/googleappengine/source/browse/trunk/python/google/appengine/api/blobstore/blobstore.py#83

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