Enumeration of objects in migration without loading everything into memory

[porsager]

Hi.

I've made a custom keyboard for iOS using realm for the dictionaries.
A dictionary contains up to 400.000 words, and I'm unable to do migrations from the keyboard extension due to the extensions being limited at 50mb memory usage.

Would it be possible to allow for enumeration of objects either per object or in batches in a migration without loading the whole db into memory? (as an example a 9.8mb realm file with 360.000 words peaks at 152mb if i enumerate (making no changes) during migration)

If there is any way to get this done currently i would also love to know.

Thanks
Rasmus.