issue with $push aggregation operator

Hi,

I am unable to use the $push aggregation operator in a pipeline query. The connection seems to hang up after the query is sent. To reproduce it, I used the example in the MongoDb documentation:

https://docs.mongodb.com/manual/reference/operator/aggregation/push/

I changed the $group stage to not use $dayOfYear and $year because these are not supported by DocumentDB, but even then the connection with the DocumentDB seems to break.

When executed through a java client I get:
com.mongodb.MongoSocketReadException: Prematurely reached end of stream

I also tried to execute the query from Mongo DB Compass and mongo shell and it gives similar results. Mongo shell:

E QUERY [thread1] Error: error doing query: failed: network error while attempting to run command 'aggregate' on host 'localhost:27021'

The query looks like this:

db.items.aggregate(
[
  {
       $group:{
  		 _id: { price: "$price"  },
  		 itemsSold: { $push:  { item: "$item", quantity: "$quantity" } }
       }
  }
]
)

Every time the connection seems to hang up.

Is this a known issue or am I doing something wrong. Let me know if you need more info.
Geert.

Edited by: geert on Mar 2, 2019 9:40 AM

Edited by: geert on Mar 2, 2019 9:43 AM