diff --git a/source/includes/extracts-concurrency-consistency-recency.yaml b/source/includes/extracts-concurrency-consistency-recency.yaml index 4c560b88dfa..8eba8848f59 100644 --- a/source/includes/extracts-concurrency-consistency-recency.yaml +++ b/source/includes/extracts-concurrency-consistency-recency.yaml @@ -82,12 +82,12 @@ content: | indexed field on the index used by the query, then the cursor could return the same document more than once. - If your collection has a field or fields that are - never modified, you can use a *unique* index on this field or these - fields so that the query will return each document no more than - once. Query with :method:`~cursor.hint()` to explicitly force the - query to use that index. - + Queries that use :ref:`unique indexes ` can, in + some cases, return duplicate values. If a cursor using a unique index + interleaves with a delete and insert of documents sharing the same + unique value, the cursor may return the same unique value twice from + different documents. + --- ref: lock-general content: |