DOCS-11642: listCollection and IS lock

Author: kay-kim

source/faq/concurrency.txt

@@ -225,7 +225,9 @@ use for document level locking storage engines:
 
    * - List collections
 
-     - ``R`` (Shared)
+     - ``r`` (Intent Shared)
+
+       .. versionchanged:: 4.0
 
      - 
 

source/includes/apiargs-dbcommand-listCollections-field.yaml

@@ -21,6 +21,7 @@ description: |
    Returning just the name and type (``view`` or ``collection``) does
    not take collection-level locks whereas returning full collection
    information locks each collection in the database.
+    
 
    The default value is ``false``.
 

source/reference/command/listCollections.txt

@@ -28,7 +28,7 @@ Definition
 
    .. code-block:: javascript
 
-      { listCollections: 1, filter: <document> }
+      { listCollections: 1, filter: <document>, nameOnly: <boolean> }
 
    The :dbcommand:`listCollections` command can take the following
    optional field:
@@ -45,6 +45,16 @@ can specify a ``filter`` on any of the :ref:`fields returned
 <list-collection-output>` in the :dbcommand:`listCollections` result
 set.
 
+.. versionchanged:: 4.0
+
+   The :dbcommand:`listCollection` command takes Intent Shared lock on
+   the database. Unless the ``nameOnly`` option is specified, the
+   command also takes an Intent Shared lock on each of the collections
+   in turn while holding the Intent Shared lock on the database.
+
+   In previous versions, the command takes Shared lock on
+   the database.
+
 .. _list-collection-output:
 
 Output

source/release-notes/4.0.txt

@@ -492,6 +492,10 @@ Aggregation
 Commands
 ~~~~~~~~
 
+- The command :dbcommand:`listCollections` takes Intent Shared lock on
+  the database. In previous versions, the command takes Shared lock on
+  the database.
+ 
 - The command :dbcommand:`listCollections` and its :binary:`~bin.mongo`
   shell helper :method:`db.getCollectionInfos()` accepts the following
   option:
@@ -542,6 +546,8 @@ Miscellaneous
   created outside of a session, you cannot call :dbcommand:`getMore`
   inside a session.
 
+=======
+>>>>>>> 8ef55794b... DOCS-11642: listCollection and IS lock
 Changes Affecting Compatibility
 -------------------------------