Ravendb 2.5: query giving 0 results while it should be 1 - ravendb

Question

I've got a problem with a query I can't figure out, I'm doing this query in code:
var userList = (from user in this.documentSession.Query<User>()
where user.FederatedUserIds[authenticatedClient.ProviderName] == authenticatedClient.UserInformation.Id
select user).ToList();
In this case the providername is facebook and the id = 100001103765630. The FederatedUserId's is a Dictionary.
Which results in this query to the server:
http://localhost:8080/indexes/dynamic/Users?&query=FederatedUserIds.facebook%3A100001103765630&pageSize=128
Which gives zero results, also from a query in the webbrowser:
{
"Results": [],
"Includes": [],
"IsStale": false,
"IndexTimestamp": "2013-08-24T14:52:44.0511623Z",
"TotalResults": 0,
"SkippedResults": 0,
"IndexName": "Auto/Users/ByFederatedUserIds_facebook",
"IndexEtag": "01000000-0000-0064-0000-000000000001",
"ResultEtag": "2BD9AA1E-935A-FEDF-3636-FAB0F155ED9E",
"Highlightings": {},
"NonAuthoritativeInformation": false,
"LastQueryTime": "2013-08-24T15:00:30.1200358Z",
"DurationMilliseconds": 1
}
While I have a document that's like this in the database, so I expect 1 result instead of 0:
{
"DisplayName": "neographikal",
"RealName": "x",
"Email": "x",
"PictureUri": "x",
"Roles": [
"User"
],
"ProfileImages": [],
"FederatedUserIds": {
"google": "x",
"twitter": "x",
"windowslive": "x",
"linkedin": "x",
"facebook": "100001103765630"
}
}
The strange thing is, this has never bothered me before in this piece of code. Can somebody see where I'm doing this wrong?

Answer 1

I was going to say that you might have stale results, but I see that "IsStale": false.
The only other thing I see is that the query on the URL comes through as FederatedUserIds.facebook while the field name is going to be FederatedUserIds_facebook in the index. However, I tested this and it worked, so it appears that the . is translated to _ before the query executes. I'm not sure when this was added or if it's always been that way.
Note if you try to query with . in Raven Studio, it doesn't work there, but _ does.
What build version are you running? I tested on 2.5.2666 and it worked for me.

Answer 2

Somehow, this was related to the indexes. Although it was a auto indexed query, deleting all the indexes on the server and rebooting the application solved the problem. I don't think this should have happened, but reproducing it seemed very difficult. If I can reproduce it in the feature, I'll try to investigate this further.
edit 01-09:
Found the problem and created a bug report: http://issues.hibernatingrhinos.com/issue/RavenDB-1334
Worked around it by creating a decent index:
public class UserByFederatedLoginIndex : AbstractIndexCreationTask<Core.Domain.User>
{
public UserByFederatedLoginIndex()
{
Map = users => from u in users
select new
{
u.DisplayName,
_ = u.FederatedUserIds.Select(x => CreateField("FederatedUserIds_"+x.Key, x.Value))
};
}