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migrating-ravens / RavenMigrations

A small migrations framework to help you manage your RavenDB Instance.
MIT License
53 stars 24 forks source link

Project little works then stops working #60

Closed radenkozec closed 2 years ago

radenkozec commented 2 years ago

I was able to get 2-3 migrations to run. Later all stop working and no able to get it run even all migrations have migration attributes and inherit from migration.

Do you use some kind of local cache?

radenkozec commented 2 years ago

After I have created options.PreventSimultaneousMigrations = false; all works normally.

JudahGabriel commented 2 years ago

I recommend you read Raven Migrations: Preventing Simultaneous Migrations

Did you run a migration in the debugger and kill the app before migrations could finish?

Raven.Migrations has a feature that prevents simultaneous migrations from running concurrently. (e.g. if you have 2 instances of your app running, you don't want both to run migrations.)

To accomplish this, Raven.Migration sets a cluster-wide compare/exchange value to ensure no other instances are running. This compare/exchange value has an expiration time, so if you just wait, things will work. But if you need to clear out the compare exchange value manually, just go into Raven Studio -> Documents -> Compare/Exchange. You'll see a Raven.Migrations value there. Delete it and you'll be able to run migrations.

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