textSearch hangs forever when searching a model with no records

[mongoosejs]

textSearch hangs forever when searching a model with no records

[aheckmann]

Does it hang if run in the mongodb console? If not, does it hang if run
with just the node driver?

mongodb, node, mongoose, and plugin versions please.

On Friday, September 27, 2013, Matthew Conlen wrote:

e.g.

search: function(req, res, next) {
MyModel.textSearch(req.params.searchstring, function(err, output) {
if(err) {
console.log(err);
}
res.json(_.map(output.results, function(r) {return r.obj} ));
})
}

will output no error string and never return if MyModel doesn't have any
records

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[mathisonian]

Added the versions to the original post.

From the mongo console:

db.modelname.runCommand("text", {search: "searchterm"})
{
    "queryDebugString" : "searchterm||||||",
    "language" : "english",
    "results" : [ ],
    "stats" : {
        "nscanned" : 0,
        "nscannedObjects" : 0,
        "n" : 0,
        "nfound" : 0,
        "timeMicros" : 9281
    },
    "ok" : 1
}

Returns correctly. Will check using node driver

[frty2]

I have a similar problem. No result, no error, etc... even with data in the collection.

Using the mongo cmd I get the error "too many text index for: ..", even if i don't create an index on the collection. Is there some sort of auto text index creation for mongoose?

Why is this error not passed to the callback?

[feaber]

The problem with forever hangs is that callback function is never executed and You probably return nothing to the browser.

As far as I investigated the problem can be related with recent changes in mongodb project:
./mongodb/lib/mongodb/db.js

in:Db.prototype.command function

[aheckmann]

can't reproduce this.

@frty2 yes mongoose auto-creates indexes when you call var m = mongoose.model(X, schema). You can listen for errors with m.on('index', callback).

@feaber interesting. i'm aware of some poor error swallowing behavior by the driver. not sure if its been fixed yet.

I'm going to close unless there's more to go on. If you can reliably reproduce, please submit more information or better yet, a pull request with the fix and a test.

[matejkramny]

issue could be that the text search isn't enabled on your mongo.. Wasn't on mine, and was hanging forever..

[feaber]

Nah, it was my code :(
I was connecting / closing connection in every action.
When I test with "var db = mongoose.connect(mongo_uri);" on top of main js file, it started to work.
Looks like textSearch when is execuded had no valid connection.
The db driver will not run callback if there is no connection.

I think I have to read more about proper handling db connections in node.js :)

Regards,
Konrad.