com.mongodb.MongoWriteException

Question

I am seeing repeated error in MSK connector  logs. Any idea what might be causing this and how to resolve? Error wording is as follows

```
Task threw an uncaught and unrecoverable exception
'duplicate key error collection'
```

Answer

Hi there,

It seems you are using mongoDB connector in MSK Connect, and the error originates at database's end.

'duplicate key error collection' might be caused by Unique indexes[1], which will not allow an operation to insert a new document with an existing indexed field. I suggest you look into the documents being inserted and see if there is any duplication in some of the fields.

If the issue still persists, please create a support case with AWS using link[2] and include more detailed logs.

[1] https://www.mongodb.com/docs/v4.2/core/index-unique/index.html?_ga=2.260644621.1633400316.1688007655-301732751.1688007655#unique-indexes

[2] https://console.aws.amazon.com/support/home#/case/create

com.mongodb.MongoWriteException

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