# JournaledGrain<TGrainState, TEventBase>.ClearLogAsync(CancellationToken)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.eventsourcing/orleans.eventsourcing.journaledgrain-2/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.eventsourcing/orleans.eventsourcing.journaledgrain-2/methods/)

[Source](https://github.com/dotnet/orleans/blob/b7a9e3e1c9c54b3cec3a467c5734bf7744541bcf/src/Orleans.EventSourcing/JournaledGrain.cs#L199)

```csharp
protected Task JournaledGrain<TGrainState, ClearLogAsync(CancellationToken cancellationToken = default(CancellationToken))
```

Clears the log of all confirmed events. Reset the state to the initial state, and discards all unconfirmed events. Throws `System.NotSupportedException` if the log cannot be cleared.

### Parameters

- `cancellationToken` (`CancellationToken`)