Using version 12.1 M18 the customer is getting:
"IllegalArgumentException: A metric named process_cpu_time-total already exists"
exception when trying to deploy some PUs.
For the same PU this error is happening intermittently. Sometimes recycling the GSCs help in the sense the PU gets deployed without errors, but the next PU will fail with the same error.
To put it better, when we have 2 PUs (A and B), we might get the error while deploying PU A. If we recycle the GSC and re-try the deployments again, PU A might get deployed ok, but PU B will fail with "A metric named process_cpu_time-total already exists".
Kobi has a reproduction.