Orleans 7 Stateless Worker Grains Not Available in IManagementGrain.GetDetailedGrainStatistics

[qiu-lijie-fro]

After upgrading to Orleans 7, Stateless Worker Grains are no longer available in IManagementGrain.GetDetailedGrainStatistics call (was available in Orleans 3.x). Could not find any indication of whether this is a desired behaviour, so it seems like an regression.

After taking a brief look under the hood, it seems like a filtering took place in Orleans.Runtime.Catalog.GetDetailedGrainStatistics, where Stateless Worker Grains in ActivationDirectory activations has their GrainInstance set to null, thus being filtered out from the results of the parent call.

[ikkentim]

Possibly related: https://github.com/dotnet/orleans/issues/8262