The Session State configured in app fabric cache should allow to store data of more than 8 MB.
Currently the app fabric cache only allows objects of upto 8 MB to be stored. This is a big limitaion in the following scenarios..
1. When session state is using appp fabric cache.
2. In case of applications which show data on web pages after retrival from table storage. This is because the data is held inside a dataset which has to be stored in the session