Trying to drop unimportant records. Running into a problem where VariantContext is lazily loaded and not quite actually serializeable.
Convincing VariantContexts to serialize is not really going to work, Kryo is too broken to accept the UnmodifiableCollectionsSerializer from kryo-serializers, and probably has more ways in which it is not serializeable.
Changing over to my own record type, but something is still broken with kryo