MongoDB CursorNotFound Error on collection.find() for a few hundred small records

Question

I\'m running on Mongo 3.6.6 (on a small Mongo Atlas cluster, not sharded) using the native Node JS driver (v. 3.0.10)

My code looks like this:

const          


        

Answer 1

First of all, if your data is too big it's not a good idea to use toArray() method, instead it's better to use forEach() and loop throw the data. Just like this :

const records = await collection.find({
  userId: ObjectId(userId),
  status: 'completed',
  lastUpdated: {
    $exists: true,
    $gte: '2018-06-10T21:24:12.000Z'
  }
});

records.forEach((record) => {
    //do somthing ...
});

Second, you can use {allowDiskUse: true} option for getting large data.

const records = await collection.find({
  userId: ObjectId(userId),
  status: 'completed',
  lastUpdated: {
    $exists: true,
    $gte: '2018-06-10T21:24:12.000Z'
  }
},
{allowDiskUse: true});