Why does Job.Progress go from 20 to 100 in an instant?

Question

I have a GenerateGeodatabaseJob to sync my local geodb with a feature service. It works fine apart from an issue with regards to progress which is reported via ProgressChanged event.

I've done this ~100 times by now and in all instances the progress took 60-90 seconds to move from 0 to ~20%, and then an instant to move to 100%. The actual data delta (between the offline and online dbs) is very small in my case so if the job is somehow estimating time to send data back and forth, that could explain it.

JoeHershman · Accepted Answer

That value comes from the server, so is just based on how the server team came up with estimating progress about a job that they don't know the length of.  Someone probably said, 20% seems like a good amount for the initial startup time and that's what it became