Hi Damien,
If you are using the High Replication datastore, this is a known
problem. I think there are other issues regarding this too, but here
is one:
http://code.google.com/p/googleappengine/issues/detail?id=4872
Robert
On Fri, Jul 1, 2011 at 04:30, Damien <[email protected]> wrote:
> I'm using App Engine with Python. In order to store the images of my
> users, I write them directly to the blobstore as indicated in Google
> documentation.
>
> My code is below:
>
> # Image insertion in the blobstore
> file_name = files.blobstore.create(mime_type='image/jpeg')
> with files.open(file_name, 'a') as f:
> f.write(self.imageContent)
> files.finalize(file_name)
> self.blobKey = files.blobstore.get_blob_key(file_name)
> logging.info("Blobkey: "+str(self.blobKey))
>
> The problem is erratic. I don't change anything and since yesterday
> sometimes it works sometimes it doesn't work. Why? As I print the
> blobkey (last line of my code), I can see whether the image has been
> saved into the blobstore or not.
>
> When it works, I have the following line displayed:
> Blobkey: AMIfv94p1cFdqkZa3AhZUF2Tf76szVEwpGgwOpN...
>
> When it doesn't work, I have this in my logs:
> Blobkey: None
>
> Last detail: images (self.imageContent) are preprocessed and converted
> into .JPEG before each write.
>
> I would like to know what should I do in such a situation? Am I doing
> something wrong that makes App Engine behavior erratic. How can I
> solve this out?
>
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