7 files changed, 42 insertions, 9 deletions
diff --git a/jstests/core/crud_ops_do_not_throw_locktimeout.js b/jstests/core/crud_ops_do_not_throw_locktimeout.js
index 7ecd8a778b7..e8c3a447cb1 100644
--- a/jstests/core/crud_ops_do_not_throw_locktimeout.js
+++ b/jstests/core/crud_ops_do_not_throw_locktimeout.js
@@ -3,7 +3,9 @@
  *
  * @tags: [assumes_against_mongod_not_mongos,
  *         assumes_read_concern_unchanged,
- *         assumes_write_concern_unchanged]
+ *         assumes_write_concern_unchanged,
+ *         # This test requires failpoint behavior not available in v4.2.
+ *         requires_fcv_44]
  */
 (function() {
 "use strict";
diff --git a/jstests/core/dbref3.js b/jstests/core/dbref3.js
index 6a91a56da2a..c98e22ea36b 100644
--- a/jstests/core/dbref3.js
+++ b/jstests/core/dbref3.js
@@ -1,6 +1,9 @@
 // Make sure we only make a DBRef object for objects where the first field is a string named $ref
 // and the second field is $id with any type. Only the first two fields matter for deciding if it
 // is a DBRef. See http://docs.mongodb.org/manual/reference/database-references/#dbrefs.
+//
+// It is not until mongod v4.4 that we support $-prefixed field names in $project stages.
+// @tags: [requires_fcv_44]
 
 var t = db.dbref3;
 
diff --git a/jstests/core/explain_shell_helpers.js b/jstests/core/explain_shell_helpers.js
index d0ebe8ef529..d753dabdd23 100644
--- a/jstests/core/explain_shell_helpers.js
+++ b/jstests/core/explain_shell_helpers.js
@@ -1,6 +1,15 @@
-// Cannot implicitly shard accessed collections because the explain output from a mongod when run
-// against a sharded collection is wrapped in a "shards" object with keys for each shard.
-// @tags: [assumes_unsharded_collection, does_not_support_stepdowns, requires_fastcount]
+/**
+ * Cannot implicitly shard accessed collections because the explain output from a mongod when run
+ * against a sharded collection is wrapped in a "shards" object with keys for each shard.
+ *
+ * @tags: [assumes_unsharded_collection,
+ *         does_not_support_stepdowns,
+ *         requires_fastcount,
+ *         # Projection push down works differently between 4.2 and 4.4. explain() provides a
+ *         # different output between the two versions. This test expects only the 4.4 version
+ *         # output.
+ *         requires_fcv_44]
+ */
 
 // Tests for the .explain() shell helper, which provides syntactic sugar for the explain command.
 
diff --git a/jstests/core/txns/create_existing_indexes.js b/jstests/core/txns/create_existing_indexes.js
index a2e042142b6..5ec5dad43fe 100644
--- a/jstests/core/txns/create_existing_indexes.js
+++ b/jstests/core/txns/create_existing_indexes.js
@@ -1,7 +1,10 @@
 /* Tests that attempts to create indexes that already exist as of the createIndexes call are
  * permitted inside multi-document transactions. Also test that attempts to create new
  * indexes on existing collections are not permitted inside multi-document transactions.
- * @tags: [uses_transactions]
+ *
+ * @tags: [uses_transactions,
+ *         # Creating indexes inside multi-document transactions is supported only in v4.4 onwards.
+ *         requires_fcv_44]
  */
 (function() {
 "use strict";
diff --git a/jstests/core/views/views_aggregation.js b/jstests/core/views/views_aggregation.js
index b15c0f0094b..4feac4f7c57 100644
--- a/jstests/core/views/views_aggregation.js
+++ b/jstests/core/views/views_aggregation.js
@@ -1,7 +1,15 @@
 /**
  * Tests aggregation on views for proper pipeline concatenation and semantics.
- * @tags: [requires_find_command, does_not_support_stepdowns, requires_getmore,
- * requires_non_retryable_commands]
+ *
+ * The conditions under which sorts are pushed down were changed between 4.2 and 4.4. This test
+ * expects the 4.4 version output of explain().
+ * @tags: [requires_find_command,
+ *         does_not_support_stepdowns,
+ *         requires_getmore,
+ *         requires_non_retryable_commands,
+ *         # Requires FCV 4.4 because the test checks explain() output, and in 4.4 the conditions
+ *         # under which sorts are pushed down were changed.
+ *         requires_fcv_44]
  */
 (function() {
 "use strict";
diff --git a/jstests/core/views/views_validation.js b/jstests/core/views/views_validation.js
index 70a87a1fa1e..c224c5cd084 100644
--- a/jstests/core/views/views_validation.js
+++ b/jstests/core/views/views_validation.js
@@ -1,4 +1,7 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands,
+//         # This test attempts to call createCollection on a namespace with '$' which is not
+//         # supported until v4.4.
+//         requires_fcv_44]
 
 (function() {
 "use strict";
diff --git a/jstests/core/wildcard_index_covered_queries.js b/jstests/core/wildcard_index_covered_queries.js
index 233bb70d953..366109a2c9a 100644
--- a/jstests/core/wildcard_index_covered_queries.js
+++ b/jstests/core/wildcard_index_covered_queries.js
@@ -5,7 +5,12 @@
  * covered unless they include the shard key. Does not support stepdowns because the test issues
  * getMores, which the stepdown/kill_primary passthroughs will reject.
  *
- * @tags: [assumes_unsharded_collection, does_not_support_stepdowns]
+ * @tags: [assumes_unsharded_collection,
+ *         does_not_support_stepdowns,
+ *         # This test attempts to project a $-prefixed field name ("$_path") which was allowed in
+ *         # 4.2 but banned in 4.4. This test checks that the aforementioned case will throw an
+ *         # error.
+ *         requires_fcv_44]
  */
 (function() {
 "use strict";