When a process hits that limit, it will fail to continue writing to the file with the message that the “maximum file size” has been reached.  There are files over this size in the environment now that are not going to be affected, but moving them within the same filesystem is likely to require help from someone with root access.  

If the limit becomes a problem, it can be revisited.  Please let us know on the cloud discussion list or on #wikimedia-cloud if problems arise from the change.

Thanks!