I am building a system that needs to save files from Google App Engine's blobstore to Google Cloud Storage. It works fine for small files (<40 mb) but for larger files it get gets unstable and GAE throws and FileNotOpenedError. To my understanding the reason for this is as described in GAE Issue 5371<http://code.google.com/p/googleappengine/issues/detail?id=5731> that the Files API closes the file every 30 seconds. To my knowledge there are no way to work around this because it is not possible to re-open av file for writing in Google Cloud Storage.
When I first become aware of this issue 6 month ago and asked about it on Stackoverflow<http://stackoverflow.com/questions/8201283/google-app-engine-how-to-write-large-files-to-google-cloud-storage> and the unstability started at around 10 mb. It have improved since that but since this all is undocumented I do not know if that is just due to the servers being in better mood this month. I order for me to build something reliable I need to know more about what this API is built to handle. Do anybody have some insight to share? best Arne -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/QJteFc_N66QJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
