DOCSP-33388 Mongos Cursor Results For Non-Existant Dbs (#5244)

* DOCSP-33388 Mongos Cursor Results For Non-Existant Dbs

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* IR Feedback

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Author: ianf-mongodb

source/includes/fact-mongos-db-agg-validation.rst

@@ -0,0 +1,5 @@
+Starting in MongoDB 7.2, aggregation pipeline queries that attempt to
+use non-existent databases on :ref:`mongos <mongos>` deployments return 
+validation errors. 
+
+In previous versions, these aggregation queries return empty cursors.

source/release-notes/7.2.txt

@@ -24,6 +24,13 @@ New Bulk Write Command
 
 .. include:: /includes/bulkWrite-introduction.rst
 
+.. _7.2-mongos-db-aggregation-validation:
+
+Database Validation on ``mongos`` Aggregation Queries
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. include:: /includes/fact-mongos-db-agg-validation.rst
+
 .. _7.2-rel-notes-serverStatus:
 
 ``serverStatus`` Metrics

source/tutorial/iterate-a-cursor.txt

@@ -200,6 +200,11 @@ in the following example:
 
    myCursor.objsLeftInBatch();
 
+Cursor Results for Non-Existent ``mongos`` Databases
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. include:: /includes/fact-mongos-db-agg-validation.rst
+
 Cursor Information
 ------------------