Hi,
The entire concept of import has been falsely used in the last two decades.
One could simply copy - as root - the db directory /var/lib/mysql/db_name.
Then tar or zip it.
The simply create a database name in Kloxo-MR. This will create a new da user and a directory under /var/lib/mysql/db_name.
Move this tar to the new server and unpack it under the newly created by kloxo.
There is no export or import involved, but a simple pack, transfer and unpack involved.
Why do you use dump at all? What that? Thats nothing other than pack, transfer and unpack with a lot of headaches.
Now if you need the upload function for other clients, who do not have an access as root, things are different.
Here, you need to change THE EXECUTION TIME OF A PHP SCRIPT, so that it does not die while transfering the file, AND INCREASE MEMORY per connection. Get it?