DB calls not being Fiberized

[rharrell-southern]

When i'm runing MongoDB interactions on the server side JavaScript, I am periodically getting an error from Meteor.

app/packages/mongo-livedata/collection.js:227
        throw e;
              ^
Error: Meteor code must always run within a Fiber
    at [object Object].get (app/packages/meteor/dynamics_nodejs.js:14:15)
    at [object Object]._maybeBeginWrite (app/packages/mongo-livedata/mongo_driver.js:70:41)
    at [object Object].update (app/packages/mongo-livedata/mongo_driver.js:193:20)
    at [object Object].update (app/packages/mongo-livedata/collection.js:221:32)
    at Array.0 (app/server/publish.js:4:15)
    at [object Object]._teardown (app/packages/livedata/livedata_server.js:584:31)
    at [object Object].stop (app/packages/livedata/livedata_server.js:464:10)
    at app/packages/livedata/livedata_server.js:365:11
    at Function.<anonymous> (app/packages/underscore/underscore.js:84:24)
    at [object Object]._stopAllSubscriptions (app/packages/livedata/livedata_server.js:364:7)
Exited with code: 1

It looks like server side DB calls are not always getting correctly Fiberized for nodejs to process. It doesn't happen all the time and appears random. Often if we leave meteor running overnight it will have error-ed out when we come back in the morning. Sometimes meteor can recover, sometimes it needs to be reset.

[rharrell-southern]

I have fixed this error on our end by wrapping all our database calls in a Fiber(function(){ ... }).run(); but this is a hack around for the problem, it should be addressed in Meteor, IMO.