Calling the Ar.DefaultResolver.SetDefaultSearchPath() function again does not work after using Ar.GetResolver()

[bazhutkin]

Description of Issue

There is no way to update default resolver search paths without restarting Maya.

Steps to Reproduce

from pxr import Ar
Ar.DefaultResolver.SetDefaultSearchPath(['//server/projects/test_1'])
print(Ar.GetResolver().Resolve('assets/props/asset/asset.usd').GetPathString())

\\server\projects\test_1\assets\props\asset\asset.usd

Ar.DefaultResolver.SetDefaultSearchPath(['//server/projects/test_2'])
Ar.GetResolver().Resolve('assets/props/asset/asset.usd').GetPathString()

\\server\projects\test_1\assets\props\asset\asset.usd

If this is not a bug, then tell me how I can update the resolver search paths without rebooting Maya?

System Information (OS, Hardware)

Windows 11, macOS 14

Package Versions

MayaUSD 0.26.0 (OpenUSD 22.11) for Maya 2024

[jesschimein]

Filed as internal issue #USD-9214

[spiffmon]

Hi @bazhutkin ! The way we intend for this to happen is that you don't change the paths configured on the Resolver itself (which is a global thing used by all open Stages (and other entities)), but rather to "refresh" the ArResolverContext with which the stage was opened (the context gets "attached" to the Stage. This would require some retooling on Maya's part to facilitate the workflow, but it should also be empowering, especially for "multi shot" workflows and other cases.

Unfortunately, we discovered that we have not yet implemented a RefreshContext() method for ArDefaultResolver(), which will be needed for this pattern to work. We will prioritize getting that done for the 24.05 release.