Hello , we have a replace operation that is happening on mongoDB through an api call and changestream captures this event , but we are seeing this error Unexpected error when handling 'replace' on document 1234 of 'resource': [Errno 409] A document with id 1234 already exists. How can we fix this issue ?

What exactly you are doing, replacing the same document in typesense?

from the api when we update a value of a mongocolelction , its basically replacing a document in mongodb , and this needs to be captured to typesense, And in changestream logs we see this messages , due to which we are unable to see the updates what INFO - Detected 'replace' operation on document: 1234 of 'resource' collection applying to Typesense ERROR - Unexpected error when handling 'replace' on document 1234 of 'resource': [Errno 409] A document with id 1234 already exists.

What is

replace

here? We only have

emplace

API action for updates.

We have a RestAPI which basically is used to update the mongo DB , but under the hood it does a Replace , and whenever this api is triggered , we get the change stream event in typesense , Detected 'replace' operation on document: 12345 of 'resource' collection applying to Typesense Unexpected error when handling 'replace' on document 12345 of 'resource': [Errno 409] A document with id 12345 already exists.

What are you using for syncing these change events to Typesense?

We have typesense changesteam running listening for the events from Mongo , already we are getting the update and insert updates coming to typesense from mongo

Are you using this? https://github.com/typesense/typesense-mongodb

No we are using watch method of mongo for eg :

watch(pipeline, full_document="updateLookup")

and then do a update or delete based on the operation type [which can be delete , update or replace] i think we havent handled replace in the condition

What I don't follow is this

replace

. There is no such operation in Typesense.

This events are from Mongo we look for following events from mongo delete, update, insert

But the error

A document with id 1234 already exists.

means that you are trying to index a document that already exist. You have to use either

upsert

or

emplace

mode to handle that. You can check the docs here for the various action modes: https://typesense.org/docs/27.1/api/documents.html#action-modes-create-upsert-update-emplace

Thanks , i got it