Incorrect Count returned by MongoDB (WiredTiger)

Question

This sounds odd, and I hope I am doing something wrong, but my MongoDB collection is returning the Count off by one in my collection.

I hav

Answer 1

According to this issue, this behaviour can occur if mongodb experiences a hard crash and is not shut down gracefully. If not issuing any query, mongodb probably just falls back to the collected statistics.

According to the article, calling db.COLLECTION.validate(true) should reset the counters.