GridFS streams not working correctly about mongodb-memory-server

[hasezoey]

mongodb(the binary version): 6.0.9
logs-test.txt

why use a different mongodb version than in logs-full.txt?

I noticed though that GridFS streams seem to behave differently compared to a normal mongodb server.

does anything change if you use instance: { storageEngine: "wiredTiger" }? if yes, then it is a ephemeralForTest issue - which has been removed in mongodb 7.0.0

When I do that with mongodb-memory-server I cannot find the file unless I wait for 6ms.

at least in the case of a replset, maybe you need to use writeConcern: majority?

When using GridFS, the server closes unexpectedly.
Log:
connection 1 to 127.0.0.1:40865 closed
<further code block>

i have no clue why that error gets thrown, maybe try to upgrade your driver? at least it is not the instance / MMS shutting down (it is a client error, guessing by the logs)

[framp]

Thanks for the response!

why use a different mongodb version than in logs-full.txt?

Oh my bad, bad copy-paste, it doesn't change the result though.

does anything change if you use instance: { storageEngine: "wiredTiger" }? if yes, then it is a ephemeralForTest issue - which has been removed in mongodb 7.0.0

Nope, it's still not finding the file right after the stream is processed.

Pretty strange error, this may be an issue upstream with mongo and it's just not visible for some weird timing reason.
Maybe mongodb-memory-server is much faster at returning a response and by the time normal mongo ends the stream the data has already been saved in GridFS.

[hasezoey]

Maybe mongodb-memory-server is much faster at returning a response and by the time normal mongo ends the stream the data has already been saved in GridFS.

what exactly do you mean with "normal mongo", do you mean atlas or a manually run binary or something else?

[framp]

My bad, I was trying with a mongodb instance on Atlas

I tried with a local instance and the behaviour is consistent with mongodb-memory-server so definitely an upstream problem!

Thanks a lot!