Cloud firestore 0.10.0 FieldValue.increment not working #31831
Description
I got a problem with concurrent transactions.
I'm using flutter with cloud firestore plugin version 0.10.0
I got a collection called counters with a document named test. Inside this document i got a field called counter ( number type).
This counter is increased pushing a button from different devices, that's when I understand that a transaction like this makes sense (I attach the piece of code I'm using).
DocumentReference counterRef = Firestore.instance.document("counters/test");
new FlatButton(
color: Colors.green,
child: new Text("ADD"),
onPressed: () {
Firestore.instance.runTransaction((Transaction tx) async {
DocumentSnapshot Ref = await tx.get(counterRef);
if(Ref.exists){
print("Updating counter!");
await tx.update(Ref , <String, dynamic>{
'counter': FieldValue.increment(1),
}).catchError((e){
print("tx update err:$e");
});
}else{
print("No document found in transaction!");
}
});
},
),
Using only 2 physical devices, hitting the button at once on both, the counter is only increased 1 time. And i can see on the logs that each device has called the transaction ( i see the Updating counter print on the console )
Can anyone check FieldValue.increment functionality from 2 devices at the same time?