Graphql-dotnet: Deadlocks starting with alpha-802

[csantero]

I tried upgrading my app from alpha 797 to 802, and I discovered that my queries were starting to hang indefinitely. The affected fields use FuncFieldResolver returning Task.

I did some digging and I believe I've tracked down the offending commit. It appears that the resolver created in FieldMiddlewareBuilder no longer returns a task, and is calling result.Result to force synchronous execution. I tried reverting that one change against master, but apparently other code is relying on this resolver being synchronous now, and I couldn't get the tests to pass.

[joemcbride]

Thanks for the report, yes that seems like an issue.

[kamsar]

Setting SetFieldMiddleware = false on your ExecutionOptions would probably be a workaround, assuming you aren't using field middleware.

[johnrutherford]

Pull request #536 should also fix this issue.

[csantero]

I can confirm that this is fixed as of alpha 870.