CODEWITHSUNDEEP
c#ravendb
seanfitzg
seanfitzg

Reputation: 433

EsentFileNotFoundException.FileNotFound exception when initializing RavenDb-Embedded

I'm getting a very frustrating error when calling Initialize on the EmbeddableDocumentStore class. This is a WPF application that is attempting to start or initialize a RavenDB database at c:\temp\ravenDb.

My code is:

EmbeddableDocumentStore _documentStore = new EmbeddableDocumentStore()
{
    DataDirectory = @"C:\temp\RavenDb"
};

using (_documentStore.Initialize())
{

}

Fairly simple. The error occurs at the call to Initialize(). This is the full error:

Microsoft.Isam.Esent.Interop.EsentFileNotFoundException occurred
Message=File not found
Source=Esent.Interop
StackTrace:
    at Microsoft.Isam.Esent.Interop.Api.Check(Int32 err) in C:\Work\ravendb\SharedLibs\Sources\managedesent-61618\EsentInterop\Api.cs:line 2736
InnerException:

What's frustrating is when I create a new WPF app and copy in the same code, it works correctly, and is able to initialize and create the base files. Then, when I go back to my main WPF app - the db is now able to initialise (as the files have been created), but any Session.Query call results in the following error:

System.IO.FileNotFoundException occurred
Message=segments.gen
Source=Lucene.Net
StackTrace:
   at Lucene.Net.Store.RAMDirectory.OpenInput(String name) in z:\Libs\lucene.net\src\core\Store\RAMDirectory.cs:line 301
InnerException:

Edit: Full Code: It's called from a Background Worker delegate:

private void RefreshGrid()
{
    BackgroundWorker bw = new BackgroundWorker();
    bw.DoWork += new DoWorkEventHandler(bw_DoWork);            
    bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_RunWorkerCompleted);
    if (bw.IsBusy != true)
    {
        bw.RunWorkerAsync(_domainType);
    }
}

void bw_DoWork(object sender, DoWorkEventArgs e)
{
    e.Result = EventStoreInstance.Instance.GetAggregateRoots((Type)e.Argument);
}

Which then calls GetAggregateRoots:

//Called in class ctor:
_publisher = publisher;
_documentStore = new EmbeddableDocumentStore()
{
    DataDirectory = _dataDir // is "C:\temp\RavenDb"
};

public List<AggregateRootModel> GetAggregateRoots(Type AggregrateRootType)
{
    using (_documentStore.Initialize())
    {
        using (var session = _documentStore.OpenSession())
        {
            var aggregateRoots = session.Query<AggregateRootModel>()
                    .Where(p => p.Type == AggregrateRootType.AssemblyQualifiedName).ToList();
            return aggregateRoots;
        }
    }
}

Upvotes: 4

Views: 1175

Answers (1)

Ayende Rahien
Ayende Rahien

Reputation: 22956

Those are expected, they are handled internally inside RavenDB. You are seeing them because you are running in the debugger and stopping on any exceptions.

Upvotes: 7

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