# MembershipTableTestRunner.ConcurrentCrossRowUpdates_SharedTableVersion_HaveExactlyOneWinner(CancellationToken)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.clustering.testkit/orleans.clustering.testkit.membershiptabletestrunner/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.clustering.testkit/orleans.clustering.testkit.membershiptabletestrunner/methods/)

[Source](https://github.com/dotnet/orleans/blob/8bc9fd244427351ad24ccc039a9e7642a42c1cc4/src/Orleans.Clustering.TestKit/MembershipTableTestRunner.cs#L309-L331)

```csharp
public Task ConcurrentCrossRowUpdates_SharedTableVersion_HaveExactlyOneWinner(CancellationToken cancellationToken = default(CancellationToken))
```

G20: two armed cross-row writes using one table candidate have exactly one winner.

### Parameters

- `cancellationToken` (`CancellationToken`)