Скачать или смотреть mongodb bulkWrites update behaves differently from normal update

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I have a document with an order array that contains ids.
Sometimes I want to set specific indexes in that array:
db.getCollection('myCollection').update(
{
_id: 'someId',
},
{
$set: {
'order.1': 'foo2',
},
},
);

db.getCollection('myCollection').update(
{
_id: 'someId',
},
{
$set: {
'order.1': 'foo2',
},
},
);

This works correcly and updates the second array element. If the array is empty, the 0th element is null.
Trying the same with bulkWrite leads to really weird behavior:
db.getCollection('myCollection').bulkWrite([
{
updateOne: {
filter: { _id: 'eager' },
update: [
{
$set: {
'order.1': 'foo3',
},
},
],
},
},
]);

db.getCollection('myCollection').bulkWrite([
{
updateOne: {
filter: { _id: 'eager' },
update: [
{
$set: {
'order.1': 'foo3',
},
},
],
},
},
]);

If the array in the db is empty this does nothing.
However, if there are elements in the array, this replaces every array element with an object of the form { '1': 'foo3' }.
every
{ '1': 'foo3' }
Does anyone have any idea why this happens and how to make bulkWrite behave? :D


Tags: javascript,arrays,mongodbSource of the question:
https://stackoverflow.com/questions/7...

Question and source license information:
https://meta.stackexchange.com/help/l...
https://stackoverflow.com/