what is the fastest way to import data into mysql 5.7

Now I want to import a 10000000+ record table from database A mysql cluster to B mysql cluster,now I am using :

source xx.sql

It is so slow. Now what is the fastest way to import? I want to import like this:

import a new table,like table_new(it should be very fast like copy data,may be 1000000/s)
remame old table to table_legacy
rename table_new to table

4.add index or constaint if needed

is it possible or what is the best way to complete this task?

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