Cursor timeout in find stream() even after addCursorFlag in sharded collection

Working with Data Drivers & ODMs
,
1

I am using sharded collection to stream data but it keep giving me cursorTimeOut even after putting addCursorFlag(“noCursorTimeout”, true).

2

How are you setting that flag? What does your code look like? Also what version of the driver are you using?

3

let cursor=await db.collection(“business”).find({}).sort({ _id: 1 }).addCursorFlag(“noCursorTimeout”, true);
while (await cursor.hasNext()) {
//process here
}

driver version is 4.5

4

Looking on SO, I did see a similar issue where they resolved it by passing the option as an option within the find:

db.collection(“business”).find({},{timeout: false}).sort({ _id: 1 })

I’ve had the cursor expire several times when running large scripts, typically when using one collection to feed the script data to perform other actions.
In those cases I typically use filter (not skip) and limits (with sorting!) to ensure that my cursor is short lived, just in case it times out or a fallover happens or something.

5

Oh Ok, make sense, I will filter the data up and process it in small batches.
Thanks