init_state(Tab, State) -> NewState | abort(Reason)
Starts when a fragmented table is created with the function mnesia:create_table/2 or when a normal (unfragmented) table is converted to be a fragmented table with mnesia:change_table_frag/2.
Notice that the function add_frag/2 is started one time for each of the other fragments (except number 1) as a part of the table creation procedure.
State is the initial value of the hash_state frag_property. NewState is stored as hash_state among the other frag_properties.