According to this test case: https://qatestrail.hq.unity3d.com/index.php?/cases/view/39620
When the Collaborate needs to publish more than 10k files, there should be a "Max commit size warning" to confirm the action. However, this is not the case for Linux Editor.
What the Editor does is to upload ~5000 files each time and does it twice during the process.

Repro:
1. Open the attached project (in the folder Copy, there are 10k files)
2. Set up a Collaborate project with your own account (Instruction: https://docs.unity3d.com/560/Documentation/Manual/UnityCollaborateSettingUp.html)
3. Public the project
4. Observe how Collaborate handles it

Expected: A "Max commit size warning" shows up for users to confirm the action.