Cosmos: Entity splitting

[AndriySvyryd]

This would be useful to overcome the 2MB item size limit

[mnguyen36]

Definitely would love this. How would we do this ourselves?

[roji]

This has been explicitly called out by the Cosmos people as a useful modeling feature; as documents get bigger, they need to be split down to avoid big costs when reading/writing them (this is generally less relevant in traditional relational modeling, where each table tends to be relatively manageable, and data is split relationally across tables). Entity splitting would help splitting a single logical document (modeled as a single .NET type) to multiple documents transparently, without the user having to worry about it and do it manually.