What version are you upgrading from?
from 9.4 to 9.9 to 10.2
System information (Operating system, Java version, Database provider/version)
What’s the issue you’re facing?
There will be two database migrations to 9.4.0 → 9.9.2 → 10.2.1. Does data size increase migration time like live_measures?
Yes, data size increase migration time when there are changes in those tables. However the people at SonarSource have improved the process of migration and work very hard so that the migration time is never higher than one day.
I suggest you to perform the upgrade on a previous staging environment with the same data to know the estimated time for the upgrade in production.