Static Hangfire RecurringJob methods in LINQPad are not behaving - hangfire

Question

I have a script in LINQPad that looks like this:
var serverMode = EnvironmentType.EWPROD;
var jobToSchedule = JobType.ABC;
var hangfireCs = GetConnectionString(serverMode);
JobStorage.Current = new SqlServerStorage(hangfireCs);
Action<string, string, XElement> createOrReplaceJob =
(jobName, cronExpression, inputPackage) =>
{
RecurringJob.RemoveIfExists(jobName);
RecurringJob.AddOrUpdate(
jobName,
() => new BTR.Evolution.Hangfire.Schedulers.JobInvoker().Invoke(
jobName,
inputPackage,
null,
JobCancellationToken.Null),
cronExpression, TimeZoneInfo.Local);
};
// psuedo code to prepare inputPackage for client ABC...
createOrReplaceJob("ABC.CustomReport.SurveyResults", "0 2 * * *", inputPackage);
JobStorage.Current.GetConnection().GetRecurringJobs().Where( j => j.Id.StartsWith( jobToSchedule.ToString() ) ).Dump( "Scheduled Jobs" );
I have to schedule in both QA and PROD. To do that, I toggle the serverMode variable and run it once for EWPROD and once for EWQA. This all worked fine until recently, and I don't know exactly when it changed unfortunately because I don't always have to run in both environments.
I did purchase/install LINQPad 7 two days ago to look at some C# 10 features and I'm not sure if that affected it.
But here is the problem/flow:
Run it for EWQA and everything works.
Run it for EWPROD and the script (Hangfire components) seem to run in a mix of QA and PROD.
When I'm running it the 'second time' in EWPROD I've confirmed:
The hangfireCs (connection string) is right (pointing to PROD) and it is assigned to JobStorage.Current
The query at the end of the script, JobStorage.Current.GetConnection().GetRecurringJobs() uses the right connection.
The RecurringJob.* methods inside the createOrReplaceJob Action use the connection from the previous run (i.e. EWQA). If I monitor my QA Hangfire db, I see the job removed and added.
Temporary workaround:
Run it for EWQA and everything works.
Restart LINQPad or use 'Cancel and Reset All Queries' method
Run it for EWPROD and now everything works.
So I'm at a loss of where the issue might lie. I feel like my upgrade/install of LINQPad7 might be causing problems, but I'm not sure if there is a different way to make the RecurringJob.* static methods use the 'updated' connection string.
Any ideas on why the restart or reset is now needed?
LINQPad - 5.44.02
Hangfire.Core - 1.7.17
Hangfire.SqlServer - 1.7.17

Answer 1

This is caused by your script (or a library that you call) caching something statically, and not cleaning up between executions.
Either clear/dispose objects when you're done (e.g., JobStorage.Current?) or tell LINQPad not to re-use the process between executions, by adding Util.NewProcess=true; to your script.