SERVER-33287 tag jstests that use commands which return inaccurate results after unclean shutdown

150 files changed, 243 insertions, 102 deletions

diff --git a/jstests/core/apitest_dbcollection.js b/jstests/core/apitest_dbcollection.js
index 775abc97272..a7c8655edde 100644
--- a/jstests/core/apitest_dbcollection.js
+++ b/jstests/core/apitest_dbcollection.js
@@ -1,5 +1,7 @@
 /**
- *   Tests for the db collection
+ * Tests for the db collection
+ *
+ * @tags: [requires_fastcount]
  */
 
 /*
diff --git a/jstests/core/apply_ops1.js b/jstests/core/apply_ops1.js
index 31c746ff03b..ba6a853782c 100644
--- a/jstests/core/apply_ops1.js
+++ b/jstests/core/apply_ops1.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 (function() {
     "use strict";
diff --git a/jstests/core/apply_ops2.js b/jstests/core/apply_ops2.js
index b46f119d4f7..a7f752d1456 100644
--- a/jstests/core/apply_ops2.js
+++ b/jstests/core/apply_ops2.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 // Test applyops upsert flag SERVER-7452
 
diff --git a/jstests/core/apply_ops_dups.js b/jstests/core/apply_ops_dups.js
index 01e25cbe802..292c9ecb648 100644
--- a/jstests/core/apply_ops_dups.js
+++ b/jstests/core/apply_ops_dups.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 (function() {
     "use strict";
diff --git a/jstests/core/arrayfind1.js b/jstests/core/arrayfind1.js
index bd8d47b845e..e773eea24d6 100644
--- a/jstests/core/arrayfind1.js
+++ b/jstests/core/arrayfind1.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.arrayfind1;
 t.drop();
diff --git a/jstests/core/arrayfind2.js b/jstests/core/arrayfind2.js
index 60eaa27f0d7..bbceffaa126 100644
--- a/jstests/core/arrayfind2.js
+++ b/jstests/core/arrayfind2.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.arrayfind2;
 t.drop();
diff --git a/jstests/core/auth_copydb.js b/jstests/core/auth_copydb.js
index 176061b423e..17842256d80 100644
--- a/jstests/core/auth_copydb.js
+++ b/jstests/core/auth_copydb.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 a = db.getSisterDB("copydb2-test-a");
 b = db.getSisterDB("copydb2-test-b");
diff --git a/jstests/core/basic2.js b/jstests/core/basic2.js
index 7c68a3e4f3a..4d854d4b1ea 100644
--- a/jstests/core/basic2.js
+++ b/jstests/core/basic2.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 t = db.getCollection("basic2");
 t.drop();
diff --git a/jstests/core/basic8.js b/jstests/core/basic8.js
index d9b158487cc..4a35de6963b 100644
--- a/jstests/core/basic8.js
+++ b/jstests/core/basic8.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.basic8;
 t.drop();
diff --git a/jstests/core/batch_write_command_delete.js b/jstests/core/batch_write_command_delete.js
index 37a65750524..f83a9984936 100644
--- a/jstests/core/batch_write_command_delete.js
+++ b/jstests/core/batch_write_command_delete.js
@@ -6,6 +6,7 @@
 //   assumes_unsharded_collection,
 //   assumes_write_concern_unchanged,
 //   requires_non_retryable_writes,
+//   requires_fastcount,
 // ]
 
 //
diff --git a/jstests/core/batch_write_command_insert.js b/jstests/core/batch_write_command_insert.js
index 962a4eb37ad..136727d159a 100644
--- a/jstests/core/batch_write_command_insert.js
+++ b/jstests/core/batch_write_command_insert.js
@@ -4,6 +4,7 @@
 // @tags: [
 //   assumes_write_concern_unchanged,
 //   cannot_create_unique_index_when_using_hashed_shard_key,
+//   requires_fastcount,
 // ]
 
 //
diff --git a/jstests/core/batch_write_command_update.js b/jstests/core/batch_write_command_update.js
index 24f86256d98..59c327db233 100644
--- a/jstests/core/batch_write_command_update.js
+++ b/jstests/core/batch_write_command_update.js
@@ -5,6 +5,7 @@
 //   assumes_unsharded_collection,
 //   assumes_write_concern_unchanged,
 //   requires_non_retryable_writes,
+//   requires_fastcount,
 // ]
 
 //
diff --git a/jstests/core/big_object1.js b/jstests/core/big_object1.js
index 8029cbb868f..7ed4c92dad6 100644
--- a/jstests/core/big_object1.js
+++ b/jstests/core/big_object1.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount, requires_collstats]
 
 t = db.big_object1;
 t.drop();
diff --git a/jstests/core/bulk_insert.js b/jstests/core/bulk_insert.js
index 157b24aabba..91e81d62c11 100644
--- a/jstests/core/bulk_insert.js
+++ b/jstests/core/bulk_insert.js
@@ -1,4 +1,6 @@
 // Tests bulk insert of docs from the shell
+//
+// @tags: [requires_fastcount]
 
 var coll = db.bulkInsertTest;
 coll.drop();
diff --git a/jstests/core/bypass_doc_validation.js b/jstests/core/bypass_doc_validation.js
index 77e879d7c79..bfd3bc1e978 100644
--- a/jstests/core/bypass_doc_validation.js
+++ b/jstests/core/bypass_doc_validation.js
@@ -1,4 +1,4 @@
-// @tags: [does_not_support_stepdowns, requires_non_retryable_commands]
+// @tags: [does_not_support_stepdowns, requires_non_retryable_commands, requires_fastcount]
 
 /**
  * Tests that various database commands respect the 'bypassDocumentValidation' flag:
diff --git a/jstests/core/capped6.js b/jstests/core/capped6.js
index c92006f0d01..6905a0f1f13 100644
--- a/jstests/core/capped6.js
+++ b/jstests/core/capped6.js
@@ -6,6 +6,7 @@
 //   # the replica set, whereas the latter must be routed to the primary.
 //   assumes_read_preference_unchanged,
 //   requires_non_retryable_commands,
+//   requires_fastcount,
 // ]
 (function() {
     var coll = db.capped6;
diff --git a/jstests/core/capped_convertToCapped1.js b/jstests/core/capped_convertToCapped1.js
index d3f35a7fa4d..3636c932358 100644
--- a/jstests/core/capped_convertToCapped1.js
+++ b/jstests/core/capped_convertToCapped1.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 // test cloneCollectionAsCapped
 
diff --git a/jstests/core/capped_empty.js b/jstests/core/capped_empty.js
index e43170405e3..aaac7639f2a 100644
--- a/jstests/core/capped_empty.js
+++ b/jstests/core/capped_empty.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 t = db.capped_empty;
 t.drop();
diff --git a/jstests/core/capped_max1.js b/jstests/core/capped_max1.js
index e4fbda62233..55c6c98569f 100644
--- a/jstests/core/capped_max1.js
+++ b/jstests/core/capped_max1.js
@@ -1,4 +1,6 @@
-// test max docs in capped collection
+// Test max docs in capped collection
+//
+// @tags: [requires_fastcount, requires_collstats]
 
 var t = db.capped_max1;
 t.drop();
diff --git a/jstests/core/check_shard_index.js b/jstests/core/check_shard_index.js
index 28a9027b72c..d3c30d61dfa 100644
--- a/jstests/core/check_shard_index.js
+++ b/jstests/core/check_shard_index.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 // -------------------------
 //  CHECKSHARDINGINDEX TEST UTILS
diff --git a/jstests/core/collection_truncate.js b/jstests/core/collection_truncate.js
index c4e868046c8..dc97c5d5b38 100644
--- a/jstests/core/collection_truncate.js
+++ b/jstests/core/collection_truncate.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_collstats]
 
 // SERVER-15033 truncate on a regular collection
 
diff --git a/jstests/core/commands_namespace_parsing.js b/jstests/core/commands_namespace_parsing.js
index 51b68ff9eaf..30301cd04dd 100644
--- a/jstests/core/commands_namespace_parsing.js
+++ b/jstests/core/commands_namespace_parsing.js
@@ -1,8 +1,13 @@
 // Cannot implicitly shard accessed collections because the error response from the shard about
 // using the empty string as the out collection name is converted to an error and no longer retains
 // the "code" property.
-// @tags: [assumes_unsharded_collection, does_not_support_stepdowns, requires_getmore,
-// requires_non_retryable_commands]
+// @tags: [
+//   assumes_unsharded_collection,
+//   does_not_support_stepdowns,
+//   requires_getmore,
+//   requires_non_retryable_commands,
+//   requires_fastcount,
+// ]
 
 // This file tests that commands namespace parsing rejects embedded null bytes.
 // Note that for each command, a properly formatted command object must be passed to the helper
diff --git a/jstests/core/commands_with_uuid.js b/jstests/core/commands_with_uuid.js
index 2086d31cabb..0080e16e478 100644
--- a/jstests/core/commands_with_uuid.js
+++ b/jstests/core/commands_with_uuid.js
@@ -1,6 +1,8 @@
 /**
 * Tests that using a UUID as an argument to commands will retrieve results from the correct
 * collection.
+*
+* @tags: [requires_fastcount]
 */
 
 (function() {
diff --git a/jstests/core/copydatabase_no_id_index.js b/jstests/core/copydatabase_no_id_index.js
index 0776626f643..64f95c9387a 100644
--- a/jstests/core/copydatabase_no_id_index.js
+++ b/jstests/core/copydatabase_no_id_index.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 /**
  * This test creates a collection with autoIndexId: false. It then copies the database and expects
diff --git a/jstests/core/copydb.js b/jstests/core/copydb.js
index 5939f62d975..e2f49145a74 100644
--- a/jstests/core/copydb.js
+++ b/jstests/core/copydb.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 // Basic tests for the copydb command.  These only test copying from the same server; these do not
 // test the ability of copydb to pull a database from another server (with or without auth).
diff --git a/jstests/core/count.js b/jstests/core/count.js
index 9ec6a424c34..d0cfa377778 100644
--- a/jstests/core/count.js
+++ b/jstests/core/count.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 t = db.jstests_count;
 
 t.drop();
diff --git a/jstests/core/count11.js b/jstests/core/count11.js
index 1a9c89f3357..f7eb398c6cb 100644
--- a/jstests/core/count11.js
+++ b/jstests/core/count11.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because of collection existing when none
 // expected.
-// @tags: [assumes_no_implicit_collection_creation_after_drop]
+// @tags: [assumes_no_implicit_collection_creation_after_drop, requires_fastcount]
 
 // SERVER-8514: Test the count command returns an error to the user when given an invalid query
 // predicate, even when the collection doesn't exist.
diff --git a/jstests/core/count2.js b/jstests/core/count2.js
index 356e03ab6dd..9c8aaca7a32 100644
--- a/jstests/core/count2.js
+++ b/jstests/core/count2.js
@@ -1,4 +1,4 @@
-// @tags: [requires_getmore]
+// @tags: [requires_getmore, requires_fastcount]
 
 t = db.count2;
 t.drop();
diff --git a/jstests/core/count5.js b/jstests/core/count5.js
index 5a23fde5661..b89eb88d494 100644
--- a/jstests/core/count5.js
+++ b/jstests/core/count5.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.count5;
 t.drop();
diff --git a/jstests/core/count6.js b/jstests/core/count6.js
index c1268f66047..46fb428ef97 100644
--- a/jstests/core/count6.js
+++ b/jstests/core/count6.js
@@ -1,4 +1,6 @@
 // Some correctness checks for fast and normal count modes, including with skip and limit.
+//
+// @tags: [requires_fastcount]
 
 t = db.jstests_count6;
 
diff --git a/jstests/core/count_hint.js b/jstests/core/count_hint.js
index da964cca202..7cbfc50dc0e 100644
--- a/jstests/core/count_hint.js
+++ b/jstests/core/count_hint.js
@@ -4,6 +4,8 @@
  *   - A bad argument to the hint() method should raise an error.
  *   - The hint() method should support both the name of the index, and the object spec of the
  *     index.
+ *
+ * @tags: [requires_fastcount]
  */
 (function() {
     "use strict";
diff --git a/jstests/core/counta.js b/jstests/core/counta.js
index a554943483b..027402af3ee 100644
--- a/jstests/core/counta.js
+++ b/jstests/core/counta.js
@@ -1,4 +1,7 @@
 // Check that count returns 0 in some exception cases.
+//
+// @tags: [requires_fastcount]
+
 (function() {
     'use strict';
 
diff --git a/jstests/core/coveredIndex2.js b/jstests/core/coveredIndex2.js
index 7f9983618fc..39a48dd3e0d 100644
--- a/jstests/core/coveredIndex2.js
+++ b/jstests/core/coveredIndex2.js
@@ -1,7 +1,7 @@
 // Cannot implicitly shard accessed collections because queries on a sharded collection are not
 // able to be covered when they aren't on the shard key since the document needs to be fetched in
 // order to apply the SHARDING_FILTER stage.
-// @tags: [assumes_unsharded_collection]
+// @tags: [assumes_unsharded_collection, requires_fastcount]
 
 t = db["jstests_coveredIndex2"];
 t.drop();
diff --git a/jstests/core/crud_api.js b/jstests/core/crud_api.js
index 3a1f7418305..6c474a08296 100644
--- a/jstests/core/crud_api.js
+++ b/jstests/core/crud_api.js
@@ -5,6 +5,7 @@
 // @tags: [
 //   assumes_unsharded_collection,
 //   assumes_write_concern_unchanged,
+//   requires_fastcount,
 // ]
 
 (function() {
diff --git a/jstests/core/cursor1.js b/jstests/core/cursor1.js
index b6b577e2153..1cb00cc82fb 100644
--- a/jstests/core/cursor1.js
+++ b/jstests/core/cursor1.js
@@ -1,4 +1,4 @@
-// @tags: [requires_getmore]
+// @tags: [requires_getmore, requires_fastcount]
 
 t = db.cursor1;
 t.drop();
diff --git a/jstests/core/cursor2.js b/jstests/core/cursor2.js
index cf496db2c3f..413383adcb7 100644
--- a/jstests/core/cursor2.js
+++ b/jstests/core/cursor2.js
@@ -1,9 +1,11 @@
 
 /**
- *  test to see if the count returned from the cursor is the number of objects that would be
- *returned
+ * Test to see if the count returned from the cursor is the number of objects that would be
+ * returned
  *
- *  BUG 884
+ * BUG 884
+ *
+ * @tags: [requires_fastcount]
  */
 function testCursorCountVsArrLen(dbConn) {
     var coll = dbConn.ed_db_cursor2_ccvsal;
diff --git a/jstests/core/cursora.js b/jstests/core/cursora.js
index 6a314c22c8f..db92e999eef 100644
--- a/jstests/core/cursora.js
+++ b/jstests/core/cursora.js
@@ -1,4 +1,4 @@
-// @tags: [requires_getmore, requires_non_retryable_writes]
+// @tags: [requires_getmore, requires_non_retryable_writes, requires_fastcount]
 (function() {
     "use strict";
 
diff --git a/jstests/core/date3.js b/jstests/core/date3.js
index 9f7204bb52a..80279a9559c 100644
--- a/jstests/core/date3.js
+++ b/jstests/core/date3.js
@@ -1,4 +1,6 @@
 // Check dates before Unix epoch - SERVER-405
+//
+// @tags: [requires_fastcount]
 
 t = db.date3;
 t.drop();
diff --git a/jstests/core/dbstats.js b/jstests/core/dbstats.js
index 6289eab1f08..324f5dd7603 100644
--- a/jstests/core/dbstats.js
+++ b/jstests/core/dbstats.js
@@ -1,4 +1,6 @@
 // Confirms that the dbStats command returns expected content.
+//
+// @tags: [requires_dbstats]
 
 (function() {
     "use strict";
diff --git a/jstests/core/doc_validation.js b/jstests/core/doc_validation.js
index 1addda2168c..9acfffae4e3 100644
--- a/jstests/core/doc_validation.js
+++ b/jstests/core/doc_validation.js
@@ -1,7 +1,11 @@
 // Cannot implicitly shard accessed collections because of collection existing when none
 // expected.
-// @tags: [assumes_no_implicit_collection_creation_after_drop, requires_non_retryable_commands,
-// requires_non_retryable_writes]
+// @tags: [
+//   assumes_no_implicit_collection_creation_after_drop,
+//   requires_non_retryable_commands,
+//   requires_non_retryable_writes,
+//   requires_fastcount,
+// ]
 
 // Test basic inserts and updates with document validation.
 (function() {
diff --git a/jstests/core/error5.js b/jstests/core/error5.js
index c8592040433..edcfa059d25 100644
--- a/jstests/core/error5.js
+++ b/jstests/core/error5.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.error5;
 t.drop();
diff --git a/jstests/core/eval3.js b/jstests/core/eval3.js
index 6c5e8b7c56d..ac0f381c9ca 100644
--- a/jstests/core/eval3.js
+++ b/jstests/core/eval3.js
@@ -4,6 +4,7 @@
 //   assumes_unsharded_collection,
 //   requires_eval_command,
 //   requires_non_retryable_commands,
+//   requires_fastcount,
 // ]
 
 t = db.eval3;
diff --git a/jstests/core/eval4.js b/jstests/core/eval4.js
index 74d25b10184..375cb66b182 100644
--- a/jstests/core/eval4.js
+++ b/jstests/core/eval4.js
@@ -5,6 +5,7 @@
 //   requires_eval_command,
 //   requires_non_retryable_commands,
 //   requires_non_retryable_writes,
+//   requires_fastcount,
 // ]
 
 t = db.eval4;
diff --git a/jstests/core/exists.js b/jstests/core/exists.js
index a29f0cb1d45..da8ce45a490 100644
--- a/jstests/core/exists.js
+++ b/jstests/core/exists.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 t = db.jstests_exists;
 t.drop();
 
diff --git a/jstests/core/explain_batch_size.js b/jstests/core/explain_batch_size.js
index 7f94adb13ce..fc4a1a6143c 100644
--- a/jstests/core/explain_batch_size.js
+++ b/jstests/core/explain_batch_size.js
@@ -3,6 +3,8 @@
 // batch size is also tested in another smoke test jstest/explain1.js but that test
 // also covers the use of an indexed collection and includes a couple of test cases
 // using limit()
+//
+// @tags: [requires_fastcount]
 
 t = db.explain_batch_size;
 t.drop();
diff --git a/jstests/core/explain_count.js b/jstests/core/explain_count.js
index d494a0c0584..d7c8a876b04 100644
--- a/jstests/core/explain_count.js
+++ b/jstests/core/explain_count.js
@@ -1,4 +1,6 @@
 // Test running explains on count commands.
+//
+// @tags: [requires_fastcount]
 
 load("jstests/libs/analyze_plan.js");     // For assertExplainCount.
 load("jstests/libs/fixture_helpers.js");  // For isMongos and isSharded.
diff --git a/jstests/core/explain_delete.js b/jstests/core/explain_delete.js
index d65a4b1f748..55462fc2663 100644
--- a/jstests/core/explain_delete.js
+++ b/jstests/core/explain_delete.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 // Tests for explaining the delete command.
 
diff --git a/jstests/core/explain_shell_helpers.js b/jstests/core/explain_shell_helpers.js
index ac630008247..910c6947e11 100644
--- a/jstests/core/explain_shell_helpers.js
+++ b/jstests/core/explain_shell_helpers.js
@@ -1,6 +1,6 @@
 // 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]
+// @tags: [assumes_unsharded_collection, does_not_support_stepdowns, requires_fastcount]
 
 // Tests for the .explain() shell helper, which provides syntactic sugar for the explain command.
 
diff --git a/jstests/core/explain_upsert.js b/jstests/core/explain_upsert.js
index aab8758366a..6da5921b8f0 100644
--- a/jstests/core/explain_upsert.js
+++ b/jstests/core/explain_upsert.js
@@ -1,7 +1,7 @@
 // Cannot implicitly shard accessed collections because of following errmsg: A single
 // update/delete on a sharded collection must contain an exact match on _id or contain the shard
 // key.
-// @tags: [assumes_unsharded_collection]
+// @tags: [assumes_unsharded_collection, requires_fastcount]
 
 // Test explain for {upsert: true} updates.
 
diff --git a/jstests/core/find2.js b/jstests/core/find2.js
index 2992bb683f1..a793c60b804 100644
--- a/jstests/core/find2.js
+++ b/jstests/core/find2.js
@@ -1,4 +1,6 @@
 // Test object id sorting.
+//
+// @tags: [requires_fastcount]
 
 function testObjectIdFind(db) {
     r = db.ed_db_find2_oif;
diff --git a/jstests/core/find5.js b/jstests/core/find5.js
index 1771c1fbbdb..41ed0034b5c 100644
--- a/jstests/core/find5.js
+++ b/jstests/core/find5.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 (function() {
     "use strict";
 
diff --git a/jstests/core/find6.js b/jstests/core/find6.js
index 96d76192814..35a853652d6 100644
--- a/jstests/core/find6.js
+++ b/jstests/core/find6.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.find6;
 t.drop();
diff --git a/jstests/core/find_and_modify.js b/jstests/core/find_and_modify.js
index e86ba4eec31..d96695a4f83 100644
--- a/jstests/core/find_and_modify.js
+++ b/jstests/core/find_and_modify.js
@@ -1,7 +1,7 @@
 // Cannot implicitly shard accessed collections because of following errmsg: A single
 // update/delete on a sharded collection must contain an exact match on _id or contain the shard
 // key.
-// @tags: [assumes_unsharded_collection]
+// @tags: [assumes_unsharded_collection, requires_fastcount]
 
 t = db.find_and_modify;
 t.drop();
diff --git a/jstests/core/find_and_modify4.js b/jstests/core/find_and_modify4.js
index 0c6942ab055..15fb93c8a9f 100644
--- a/jstests/core/find_and_modify4.js
+++ b/jstests/core/find_and_modify4.js
@@ -1,7 +1,7 @@
 // Cannot implicitly shard accessed collections because of following errmsg: A single
 // update/delete on a sharded collection must contain an exact match on _id or contain the shard
 // key.
-// @tags: [assumes_unsharded_collection]
+// @tags: [assumes_unsharded_collection, requires_fastcount]
 
 t = db.find_and_modify4;
 t.drop();
diff --git a/jstests/core/find_and_modify_server6254.js b/jstests/core/find_and_modify_server6254.js
index 1eca30e31a9..5a0dae9db22 100644
--- a/jstests/core/find_and_modify_server6254.js
+++ b/jstests/core/find_and_modify_server6254.js
@@ -1,7 +1,7 @@
 // Cannot implicitly shard accessed collections because of following errmsg: A single
 // update/delete on a sharded collection must contain an exact match on _id or contain the shard
 // key.
-// @tags: [assumes_unsharded_collection]
+// @tags: [assumes_unsharded_collection, requires_fastcount]
 
 t = db.find_and_modify_server6254;
 t.drop();
diff --git a/jstests/core/find_dedup.js b/jstests/core/find_dedup.js
index 7e9bef61160..a2ac0bfa3d8 100644
--- a/jstests/core/find_dedup.js
+++ b/jstests/core/find_dedup.js
@@ -1,4 +1,7 @@
 // Test that duplicate query results are not returned.
+//
+// @tags: [requires_fastcount]
+
 (function() {
     "use strict";
 
diff --git a/jstests/core/fsync.js b/jstests/core/fsync.js
index c5ba3fe13a0..330767cf03a 100644
--- a/jstests/core/fsync.js
+++ b/jstests/core/fsync.js
@@ -7,7 +7,7 @@
  * - Confirm that the command can be run repeatedly without breaking things
  * - Confirm that the pseudo commands and eval can perform fsyncLock/Unlock
  *
- * @tags: [requires_eval_command]
+ * @tags: [requires_eval_command, requires_fastcount]
  */
 (function() {
     "use strict";
diff --git a/jstests/core/geo1.js b/jstests/core/geo1.js
index c33a5f8919c..35bba816df5 100644
--- a/jstests/core/geo1.js
+++ b/jstests/core/geo1.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because of extra shard key index in sharded
 // collection.
-// @tags: [assumes_no_implicit_index_creation]
+// @tags: [assumes_no_implicit_index_creation, requires_fastcount]
 
 t = db.geo1;
 t.drop();
diff --git a/jstests/core/geo2.js b/jstests/core/geo2.js
index 50442a3e04e..558e6c81099 100644
--- a/jstests/core/geo2.js
+++ b/jstests/core/geo2.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 t = db.geo2;
 t.drop();
 
diff --git a/jstests/core/geo3.js b/jstests/core/geo3.js
index aef8a2e5711..de8e1b2bf6a 100644
--- a/jstests/core/geo3.js
+++ b/jstests/core/geo3.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 t = db.geo3;
 t.drop();
 
diff --git a/jstests/core/geo_big_polygon.js b/jstests/core/geo_big_polygon.js
index 2c749486dab..43738e58ae7 100644
--- a/jstests/core/geo_big_polygon.js
+++ b/jstests/core/geo_big_polygon.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 //
 // Test of sample big polygon functionality
diff --git a/jstests/core/geo_big_polygon2.js b/jstests/core/geo_big_polygon2.js
index fabb31d5b8b..3f93d44ef0a 100644
--- a/jstests/core/geo_big_polygon2.js
+++ b/jstests/core/geo_big_polygon2.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 //
 //  Big Polygon related tests
diff --git a/jstests/core/geo_big_polygon3.js b/jstests/core/geo_big_polygon3.js
index ce2ecd55da3..fdcd3f3b5cf 100644
--- a/jstests/core/geo_big_polygon3.js
+++ b/jstests/core/geo_big_polygon3.js
@@ -1,4 +1,4 @@
-// @tags: [does_not_support_stepdowns, requires_non_retryable_writes]
+// @tags: [does_not_support_stepdowns, requires_non_retryable_writes, requires_fastcount]
 
 //
 //  Big Polygon edge cases
diff --git a/jstests/core/geo_center_sphere1.js b/jstests/core/geo_center_sphere1.js
index 1ee46b03486..0e4b0536b1d 100644
--- a/jstests/core/geo_center_sphere1.js
+++ b/jstests/core/geo_center_sphere1.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 t = db.geo_center_sphere1;
 
 function test(index) {
diff --git a/jstests/core/geo_circle1.js b/jstests/core/geo_circle1.js
index c5b6841b9a8..d6a18112323 100644
--- a/jstests/core/geo_circle1.js
+++ b/jstests/core/geo_circle1.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.geo_circle1;
 t.drop();
diff --git a/jstests/core/geo_distinct.js b/jstests/core/geo_distinct.js
index 5ba193bca00..11381a79433 100644
--- a/jstests/core/geo_distinct.js
+++ b/jstests/core/geo_distinct.js
@@ -1,6 +1,9 @@
 // Tests distinct with geospatial field values.
 // 1. Test distinct with geo values for 'key' (SERVER-2135)
 // 2. Test distinct with geo predicates for 'query' (SERVER-13769)
+//
+// @tags: [requires_fastcount]
+
 (function() {
     "use strict";
     const coll = db.geo_distinct;
diff --git a/jstests/core/geo_fiddly_box.js b/jstests/core/geo_fiddly_box.js
index 4e33780112d..b99a28c01f7 100644
--- a/jstests/core/geo_fiddly_box.js
+++ b/jstests/core/geo_fiddly_box.js
@@ -1,4 +1,6 @@
 // Reproduces simple test for SERVER-2832
+//
+// @tags: [requires_fastcount]
 
 // The setup to reproduce was/is to create a set of points where the
 // "expand" portion of the geo-lookup expands the 2d range in only one
diff --git a/jstests/core/geo_group.js b/jstests/core/geo_group.js
index 52b6ec84ba4..72d91b7907d 100644
--- a/jstests/core/geo_group.js
+++ b/jstests/core/geo_group.js
@@ -1,6 +1,7 @@
 // Cannot implicitly shard accessed collections because group is not supported on sharded
 // collections.
-// @tags: [assumes_unsharded_collection]
+//
+// @tags: [assumes_unsharded_collection, requires_fastcount]
 
 t = db.geo_group;
 t.drop();
diff --git a/jstests/core/geo_mindistance.js b/jstests/core/geo_mindistance.js
index 82f3522c213..fe694ea2c0e 100644
--- a/jstests/core/geo_mindistance.js
+++ b/jstests/core/geo_mindistance.js
@@ -1,4 +1,7 @@
 // Test $minDistance option for $near and $nearSphere queries, and geoNear command. SERVER-9395.
+//
+// @tags: [requires_fastcount]
+
 (function() {
     "use strict";
 
diff --git a/jstests/core/geo_polygon2.js b/jstests/core/geo_polygon2.js
index 8a011beba0c..6891cd7c8a8 100644
--- a/jstests/core/geo_polygon2.js
+++ b/jstests/core/geo_polygon2.js
@@ -1,6 +1,7 @@
 //
 // More tests for N-dimensional polygon querying
 //
+// @tags: [requires_fastcount]
 
 // Create a polygon of some shape (no holes)
 // using turtle graphics.  Basically, will look like a very contorted octopus (quad-pus?) shape.
diff --git a/jstests/core/geo_s2twofields.js b/jstests/core/geo_s2twofields.js
index 564d6fcd91a..ada5e96f6d5 100644
--- a/jstests/core/geo_s2twofields.js
+++ b/jstests/core/geo_s2twofields.js
@@ -1,5 +1,8 @@
 // Verify that we can index multiple geo fields with 2dsphere, and that
 // performance is what we expect it to be with indexing both fields.
+//
+// @tags: [requires_fastcount]
+
 var t = db.geo_s2twofields;
 t.drop();
 
diff --git a/jstests/core/getmore_invalidated_cursors.js b/jstests/core/getmore_invalidated_cursors.js
index adf9b17fcd5..37f2a508013 100644
--- a/jstests/core/getmore_invalidated_cursors.js
+++ b/jstests/core/getmore_invalidated_cursors.js
@@ -1,4 +1,4 @@
-// @tags: [requires_getmore, requires_non_retryable_commands]
+// @tags: [requires_getmore, requires_non_retryable_commands, requires_collstats]
 
 // Tests that running a getMore on a cursor that has been invalidated by something like a collection
 // drop will return an appropriate error message.
diff --git a/jstests/core/hashindex1.js b/jstests/core/hashindex1.js
index b79deeee445..ef94f32da08 100644
--- a/jstests/core/hashindex1.js
+++ b/jstests/core/hashindex1.js
@@ -1,6 +1,7 @@
 // Cannot implicitly shard accessed collections because of extra shard key index in sharded
 // collection.
-// @tags: [assumes_no_implicit_index_creation]
+//
+// @tags: [assumes_no_implicit_index_creation, requires_fastcount]
 
 var t = db.hashindex1;
 t.drop();
diff --git a/jstests/core/id1.js b/jstests/core/id1.js
index dedf9c449c5..79e26e33e90 100644
--- a/jstests/core/id1.js
+++ b/jstests/core/id1.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.id1;
 t.drop();
diff --git a/jstests/core/inc1.js b/jstests/core/inc1.js
index 75192ebe013..50a7892e5a4 100644
--- a/jstests/core/inc1.js
+++ b/jstests/core/inc1.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.inc1;
 t.drop();
diff --git a/jstests/core/index13.js b/jstests/core/index13.js
index cea4671c540..ec35bc8a669 100644
--- a/jstests/core/index13.js
+++ b/jstests/core/index13.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 // Top level match fields within an $elemMatch clause may constrain multiple subfields from a
 // compound multikey index.  SERVER-3104
diff --git a/jstests/core/index5.js b/jstests/core/index5.js
index 11cfa1882e4..f46654c6602 100644
--- a/jstests/core/index5.js
+++ b/jstests/core/index5.js
@@ -1,4 +1,6 @@
 // index5.js - test reverse direction index
+//
+// @tags: [requires_fastcount]
 
 function validate() {
     assert.eq(2, t.find().count());
diff --git a/jstests/core/index8.js b/jstests/core/index8.js
index b74cbb5c708..6acbe0e545d 100644
--- a/jstests/core/index8.js
+++ b/jstests/core/index8.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because of not being able to create unique index
 // using hashed shard key pattern.
-// @tags: [cannot_create_unique_index_when_using_hashed_shard_key]
+// @tags: [cannot_create_unique_index_when_using_hashed_shard_key, requires_fastcount]
 
 // Test key uniqueness
 
diff --git a/jstests/core/index_bigkeys.js b/jstests/core/index_bigkeys.js
index 6d98859132e..1c995ed4273 100644
--- a/jstests/core/index_bigkeys.js
+++ b/jstests/core/index_bigkeys.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because of extra shard key index in sharded
 // collection.
-// @tags: [assumes_no_implicit_index_creation]
+// @tags: [assumes_no_implicit_index_creation, requires_fastcount]
 
 t = db.bigkeysidxtest;
 
diff --git a/jstests/core/index_bigkeys_nofail.js b/jstests/core/index_bigkeys_nofail.js
index ffbfea53779..be58427ba6d 100644
--- a/jstests/core/index_bigkeys_nofail.js
+++ b/jstests/core/index_bigkeys_nofail.js
@@ -1,4 +1,4 @@
-// @tags: [does_not_support_stepdowns, requires_non_retryable_writes]
+// @tags: [does_not_support_stepdowns, requires_non_retryable_writes, requires_fastcount]
 
 // SERVER-16497: Check that failIndexKeyTooLong setting works
 (function() {
diff --git a/jstests/core/index_bigkeys_update.js b/jstests/core/index_bigkeys_update.js
index 73be9c77b94..9ecc5e4ecd6 100644
--- a/jstests/core/index_bigkeys_update.js
+++ b/jstests/core/index_bigkeys_update.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 bigString = "";
 while (bigString.length < 16000)
diff --git a/jstests/core/index_sparse1.js b/jstests/core/index_sparse1.js
index 9322415e04e..a7c1e8605ef 100644
--- a/jstests/core/index_sparse1.js
+++ b/jstests/core/index_sparse1.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because of extra shard key index in sharded
 // collection.
-// @tags: [assumes_no_implicit_index_creation, requires_non_retryable_writes]
+// @tags: [assumes_no_implicit_index_creation, requires_non_retryable_writes, requires_fastcount]
 
 t = db.index_sparse1;
 t.drop();
diff --git a/jstests/core/index_sparse2.js b/jstests/core/index_sparse2.js
index 0cb72567e57..148ad70b203 100644
--- a/jstests/core/index_sparse2.js
+++ b/jstests/core/index_sparse2.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because of extra shard key index in sharded
 // collection.
-// @tags: [assumes_no_implicit_index_creation]
+// @tags: [assumes_no_implicit_index_creation, requires_fastcount]
 
 t = db.index_sparse2;
 t.drop();
diff --git a/jstests/core/indexa.js b/jstests/core/indexa.js
index 33ffaa4bf78..90e74adc4f4 100644
--- a/jstests/core/indexa.js
+++ b/jstests/core/indexa.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because of extra shard key index in sharded
 // collection.
-// @tags: [assumes_no_implicit_index_creation]
+// @tags: [assumes_no_implicit_index_creation, requires_fastcount]
 
 // unique index constraint test for updates
 // case where object doesn't grow tested here
diff --git a/jstests/core/indexb.js b/jstests/core/indexb.js
index c852ff083f4..6890dda3cbc 100644
--- a/jstests/core/indexb.js
+++ b/jstests/core/indexb.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because of not being able to create unique index
 // using hashed shard key pattern.
-// @tags: [cannot_create_unique_index_when_using_hashed_shard_key]
+// @tags: [cannot_create_unique_index_when_using_hashed_shard_key, requires_fastcount]
 
 // unique index test for a case where the object grows
 // and must move
diff --git a/jstests/core/indexe.js b/jstests/core/indexe.js
index 3b55c4fb85a..6961229c682 100644
--- a/jstests/core/indexe.js
+++ b/jstests/core/indexe.js
@@ -1,4 +1,4 @@
-// @tags: [requires_getmore]
+// @tags: [requires_getmore, requires_fastcount]
 
 t = db.indexe;
 t.drop();
diff --git a/jstests/core/insert1.js b/jstests/core/insert1.js
index d6886491999..f3cb243dad1 100644
--- a/jstests/core/insert1.js
+++ b/jstests/core/insert1.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 t = db.insert1;
 t.drop();
 
diff --git a/jstests/core/insert2.js b/jstests/core/insert2.js
index 3b3b147af0e..c039444ed0f 100644
--- a/jstests/core/insert2.js
+++ b/jstests/core/insert2.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because of collection existing when none
 // expected.
-// @tags: [assumes_no_implicit_collection_creation_after_drop]
+// @tags: [assumes_no_implicit_collection_creation_after_drop, requires_collstats]
 
 // Create a new connection object so it won't affect the global connection when we modify
 // it's settings.
diff --git a/jstests/core/insert_id_undefined.js b/jstests/core/insert_id_undefined.js
index 5dc2c9a6862..b1884d24d2a 100644
--- a/jstests/core/insert_id_undefined.js
+++ b/jstests/core/insert_id_undefined.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because of collection existing when none
 // expected.
-// @tags: [assumes_no_implicit_collection_creation_after_drop]
+// @tags: [assumes_no_implicit_collection_creation_after_drop, requires_fastcount]
 
 // ensure a document with _id undefined cannot be saved
 t = db.insert_id_undefined;
diff --git a/jstests/core/insert_long_index_key.js b/jstests/core/insert_long_index_key.js
index 934b51b0369..edbbd48200a 100644
--- a/jstests/core/insert_long_index_key.js
+++ b/jstests/core/insert_long_index_key.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 t = db.insert_long_index_key;
 t.drop();
 
diff --git a/jstests/core/js3.js b/jstests/core/js3.js
index d22a579141b..d9c0374360c 100644
--- a/jstests/core/js3.js
+++ b/jstests/core/js3.js
@@ -4,6 +4,7 @@
 //   assumes_unsharded_collection,
 //   requires_eval_command,
 //   requires_non_retryable_commands,
+//   requires_fastcount,
 // ]
 
 t = db.jstests_js3;
diff --git a/jstests/core/js9.js b/jstests/core/js9.js
index fdeb2615944..0b9278a7d12 100644
--- a/jstests/core/js9.js
+++ b/jstests/core/js9.js
@@ -4,6 +4,7 @@
 //   assumes_unsharded_collection,
 //   requires_eval_command,
 //   requires_non_retryable_commands,
+//   requires_fastcount,
 // ]
 
 c = db.jstests_js9;
diff --git a/jstests/core/list_indexes_invalidation.js b/jstests/core/list_indexes_invalidation.js
index 68742007bbf..7dc70e822e7 100644
--- a/jstests/core/list_indexes_invalidation.js
+++ b/jstests/core/list_indexes_invalidation.js
@@ -1,6 +1,6 @@
 // Cannot implicitly shard accessed collections because renameCollection command not supported
 // on sharded collections.
-// @tags: [assumes_unsharded_collection, requires_non_retryable_commands]
+// @tags: [assumes_unsharded_collection, requires_non_retryable_commands, requires_fastcount]
 
 // SERVER-24963/SERVER-27930 Missing invalidation for system.indexes writes
 (function() {
diff --git a/jstests/core/list_namespaces_invalidation.js b/jstests/core/list_namespaces_invalidation.js
index a97633c7ca9..687f680ed09 100644
--- a/jstests/core/list_namespaces_invalidation.js
+++ b/jstests/core/list_namespaces_invalidation.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 // SERVER-27996/SERVER-28022 Missing invalidation for system.namespaces writes
 (function() {
diff --git a/jstests/core/loadserverscripts.js b/jstests/core/loadserverscripts.js
index 17ab816f1fe..459daea093d 100644
--- a/jstests/core/loadserverscripts.js
+++ b/jstests/core/loadserverscripts.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 // Test db.loadServerScripts()
 
diff --git a/jstests/core/max_time_ms.js b/jstests/core/max_time_ms.js
index 9b9b11ed7d5..57bd184f92e 100644
--- a/jstests/core/max_time_ms.js
+++ b/jstests/core/max_time_ms.js
@@ -6,6 +6,7 @@
 //   # latter must be routed to the primary.
 //   assumes_read_preference_unchanged,
 //   requires_getmore,
+//   requires_fastcount
 // ]
 
 var t = db.max_time_ms;
diff --git a/jstests/core/mr1.js b/jstests/core/mr1.js
index 12aeaf0cd7f..9b7dd8f3063 100644
--- a/jstests/core/mr1.js
+++ b/jstests/core/mr1.js
@@ -1,4 +1,4 @@
-// @tags: [does_not_support_stepdowns, requires_getmore]
+// @tags: [does_not_support_stepdowns, requires_getmore, requires_fastcount]
 
 t = db.mr1;
 t.drop();
diff --git a/jstests/core/mr_bigobject.js b/jstests/core/mr_bigobject.js
index bf85c39c7b6..4b58661330f 100644
--- a/jstests/core/mr_bigobject.js
+++ b/jstests/core/mr_bigobject.js
@@ -1,4 +1,4 @@
-// @tags: [does_not_support_stepdowns]
+// @tags: [does_not_support_stepdowns, requires_fastcount]
 
 t = db.mr_bigobject;
 t.drop();
diff --git a/jstests/core/multi2.js b/jstests/core/multi2.js
index d5111c31913..8c1c4ea5f3c 100644
--- a/jstests/core/multi2.js
+++ b/jstests/core/multi2.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.multi2;
 t.drop();
diff --git a/jstests/core/nestedarr1.js b/jstests/core/nestedarr1.js
index 049e09980d7..9fc8ef3c582 100644
--- a/jstests/core/nestedarr1.js
+++ b/jstests/core/nestedarr1.js
@@ -1,4 +1,4 @@
-// @tags: [requires_getmore]
+// @tags: [requires_getmore, requires_fastcount]
 
 /**
  * Inserts documents with an indexed nested array field, progressively increasing the nesting
diff --git a/jstests/core/nestedobj1.js b/jstests/core/nestedobj1.js
index 70575b2d3a6..ea1984e7954 100644
--- a/jstests/core/nestedobj1.js
+++ b/jstests/core/nestedobj1.js
@@ -1,4 +1,4 @@
-// @tags: [requires_getmore]
+// @tags: [requires_getmore, requires_fastcount]
 
 /**
  * Inserts documents with an indexed nested document field, progressively increasing the nesting
diff --git a/jstests/core/nin.js b/jstests/core/nin.js
index e7bb66bed93..36ed47550e0 100644
--- a/jstests/core/nin.js
+++ b/jstests/core/nin.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 t = db.jstests_nin;
 t.drop();
 
diff --git a/jstests/core/not1.js b/jstests/core/not1.js
index 576c5817940..1039ae7c910 100644
--- a/jstests/core/not1.js
+++ b/jstests/core/not1.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.not1;
 t.drop();
diff --git a/jstests/core/operation_latency_histogram.js b/jstests/core/operation_latency_histogram.js
index e0fc3dfaf6c..22ec77fa817 100644
--- a/jstests/core/operation_latency_histogram.js
+++ b/jstests/core/operation_latency_histogram.js
@@ -4,7 +4,7 @@
 // stage. The former operation must be routed to the primary in a replica set, whereas the latter
 // may be routed to a secondary.
 //
-// @tags: [assumes_read_preference_unchanged]
+// @tags: [assumes_read_preference_unchanged, requires_collstats]
 
 (function() {
     "use strict";
diff --git a/jstests/core/or4.js b/jstests/core/or4.js
index 700bb7d336f..71237eb36af 100644
--- a/jstests/core/or4.js
+++ b/jstests/core/or4.js
@@ -1,7 +1,13 @@
 // Cannot implicitly shard accessed collections because of unsupported group operator on sharded
 // collection.
-// @tags: [assumes_unsharded_collection, does_not_support_stepdowns, requires_getmore,
-// requires_non_retryable_writes]
+// @tags: [
+//   assumes_unsharded_collection,
+//   does_not_support_stepdowns,
+//   requires_getmore,
+//   requires_non_retryable_writes,
+//   requires_fastcount,
+// ]
+
 (function() {
     "use strict";
 
diff --git a/jstests/core/oro.js b/jstests/core/oro.js
index 810be865649..65e9168029a 100644
--- a/jstests/core/oro.js
+++ b/jstests/core/oro.js
@@ -1,4 +1,4 @@
-// @tags: [requires_getmore]
+// @tags: [requires_getmore, requires_collstats]
 
 // Test $or query with several clauses on separate indexes.
 
diff --git a/jstests/core/profile1.js b/jstests/core/profile1.js
index 977bf933be3..4109c3ac55d 100644
--- a/jstests/core/profile1.js
+++ b/jstests/core/profile1.js
@@ -1,4 +1,4 @@
-// @tags: [does_not_support_stepdowns, requires_non_retryable_commands]
+// @tags: [does_not_support_stepdowns, requires_non_retryable_commands, requires_collstats]
 
 (function() {
     "use strict";
diff --git a/jstests/core/profile_count.js b/jstests/core/profile_count.js
index 2fc33b77f3a..be359f91ae6 100644
--- a/jstests/core/profile_count.js
+++ b/jstests/core/profile_count.js
@@ -1,4 +1,4 @@
-// @tags: [does_not_support_stepdowns]
+// @tags: [does_not_support_stepdowns, requires_fastcount]
 
 // Confirms that profiled count execution contains all expected metrics with proper values.
 
diff --git a/jstests/core/profile_sampling.js b/jstests/core/profile_sampling.js
index 789b11a0440..533fd848214 100644
--- a/jstests/core/profile_sampling.js
+++ b/jstests/core/profile_sampling.js
@@ -1,5 +1,5 @@
 // Confirms that the number of profiled operations is consistent with the sampleRate, if set.
-// @tags: [does_not_support_stepdowns]
+// @tags: [does_not_support_stepdowns, requires_fastcount]
 (function() {
     "use strict";
 
diff --git a/jstests/core/pull2.js b/jstests/core/pull2.js
index bc9b1acba4b..a1b79955bb0 100644
--- a/jstests/core/pull2.js
+++ b/jstests/core/pull2.js
@@ -1,7 +1,7 @@
 // Cannot implicitly shard accessed collections because of following errmsg: A single
 // update/delete on a sharded collection must contain an exact match on _id or contain the shard
 // key.
-// @tags: [assumes_unsharded_collection]
+// @tags: [assumes_unsharded_collection, requires_fastcount]
 
 t = db.pull2;
 t.drop();
diff --git a/jstests/core/query1.js b/jstests/core/query1.js
index 9936ce18e92..7e16a03a8fc 100644
--- a/jstests/core/query1.js
+++ b/jstests/core/query1.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.query1;
 t.drop();
diff --git a/jstests/core/ref2.js b/jstests/core/ref2.js
index d0c21da257f..6b284b1f59f 100644
--- a/jstests/core/ref2.js
+++ b/jstests/core/ref2.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.ref2;
 t.drop();
diff --git a/jstests/core/regex2.js b/jstests/core/regex2.js
index fe933892834..5f7aff5d219 100644
--- a/jstests/core/regex2.js
+++ b/jstests/core/regex2.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.regex2;
 t.drop();
diff --git a/jstests/core/remove.js b/jstests/core/remove.js
index d02f107a189..37754c74190 100644
--- a/jstests/core/remove.js
+++ b/jstests/core/remove.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 // remove.js
 // unit test for db remove
diff --git a/jstests/core/remove3.js b/jstests/core/remove3.js
index 66a29893daa..6f0a94589e9 100644
--- a/jstests/core/remove3.js
+++ b/jstests/core/remove3.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 t = db.remove3;
 t.drop();
diff --git a/jstests/core/remove6.js b/jstests/core/remove6.js
index 3e977924e60..b91d28fa4e5 100644
--- a/jstests/core/remove6.js
+++ b/jstests/core/remove6.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 t = db.remove6;
 t.drop();
diff --git a/jstests/core/remove8.js b/jstests/core/remove8.js
index ab82a915449..4dd68fd186d 100644
--- a/jstests/core/remove8.js
+++ b/jstests/core/remove8.js
@@ -5,6 +5,7 @@
 //   requires_eval_command,
 //   requires_non_retryable_commands,
 //   requires_non_retryable_writes,
+//   requires_fastcount,
 // ]
 
 t = db.remove8;
diff --git a/jstests/core/remove_justone.js b/jstests/core/remove_justone.js
index 6dbe2bdac48..f5345627e34 100644
--- a/jstests/core/remove_justone.js
+++ b/jstests/core/remove_justone.js
@@ -1,7 +1,7 @@
 // Cannot implicitly shard accessed collections because of following errmsg: A single
 // update/delete on a sharded collection must contain an exact match on _id or contain the shard
 // key.
-// @tags: [assumes_unsharded_collection, requires_non_retryable_writes]
+// @tags: [assumes_unsharded_collection, requires_non_retryable_writes, requires_fastcount]
 
 t = db.remove_justone;
 t.drop();
diff --git a/jstests/core/remove_undefined.js b/jstests/core/remove_undefined.js
index c13e147fbc3..c0c031a5763 100644
--- a/jstests/core/remove_undefined.js
+++ b/jstests/core/remove_undefined.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 (function() {
     "use strict";
diff --git a/jstests/core/removea.js b/jstests/core/removea.js
index 92485198f30..082833b503a 100644
--- a/jstests/core/removea.js
+++ b/jstests/core/removea.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 // Test removal of a substantial proportion of inserted documents.
 (function() {
diff --git a/jstests/core/removeb.js b/jstests/core/removeb.js
index 14fd23b2e54..f5b038bf2c8 100644
--- a/jstests/core/removeb.js
+++ b/jstests/core/removeb.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 // Test removal of Records that have been reused since the remove operation began.  SERVER-5198
 
diff --git a/jstests/core/rename.js b/jstests/core/rename.js
index 63f1fbefaf6..6e40f8a1950 100644
--- a/jstests/core/rename.js
+++ b/jstests/core/rename.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 admin = db.getMongo().getDB("admin");
 
diff --git a/jstests/core/rename2.js b/jstests/core/rename2.js
index d774553e9b9..6884beb61ec 100644
--- a/jstests/core/rename2.js
+++ b/jstests/core/rename2.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 a = db.rename2a;
 b = db.rename2b;
diff --git a/jstests/core/rename7.js b/jstests/core/rename7.js
index 1805461cfe1..9b318e91c59 100644
--- a/jstests/core/rename7.js
+++ b/jstests/core/rename7.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 // ***************************************************************
 // rename7.js
diff --git a/jstests/core/server9385.js b/jstests/core/server9385.js
index 5e2a82a7ef2..4eb11076139 100644
--- a/jstests/core/server9385.js
+++ b/jstests/core/server9385.js
@@ -1,4 +1,7 @@
 // SERVER-9385 ensure saving a document derived from bson->js conversion doesn't lose it's _id
+//
+// @tags: [requires_fastcount]
+
 t = db.server9385;
 t.drop();
 
diff --git a/jstests/core/shellstartparallel.js b/jstests/core/shellstartparallel.js
index 7e288e0d589..8dfd1604dcc 100644
--- a/jstests/core/shellstartparallel.js
+++ b/jstests/core/shellstartparallel.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 function f() {
     throw Error("intentional_throw_to_test_assert_throws");
 }
diff --git a/jstests/core/sort10.js b/jstests/core/sort10.js
index 207be0226fa..167cf74bbfc 100644
--- a/jstests/core/sort10.js
+++ b/jstests/core/sort10.js
@@ -1,4 +1,7 @@
 // signed dates check
+//
+// @tags: [requires_fastcount]
+
 t = db.sort10;
 
 function checkSorting1(opts) {
diff --git a/jstests/core/splitvector.js b/jstests/core/splitvector.js
index 86aefd750fa..8766089e89b 100644
--- a/jstests/core/splitvector.js
+++ b/jstests/core/splitvector.js
@@ -1,6 +1,7 @@
 // Cannot implicitly shard accessed collections because the "splitVector" command cannot be run
 // on a sharded collection
-// @tags: [assumes_unsharded_collection]
+//
+// @tags: [assumes_unsharded_collection, requires_fastcount, requires_collstats]
 
 // -------------------------
 //  SPLITVECTOR TEST UTILS
diff --git a/jstests/core/stages_delete.js b/jstests/core/stages_delete.js
index 46d7f316212..e7d32c268f7 100644
--- a/jstests/core/stages_delete.js
+++ b/jstests/core/stages_delete.js
@@ -3,6 +3,7 @@
 //   # specifying a writeConcern.
 //   assumes_write_concern_unchanged,
 //   does_not_support_stepdowns,
+//   requires_fastcount,
 // ]
 
 // Test basic delete stage functionality.
diff --git a/jstests/core/startup_log.js b/jstests/core/startup_log.js
index b869221e7dd..1bbbddfb222 100644
--- a/jstests/core/startup_log.js
+++ b/jstests/core/startup_log.js
@@ -3,7 +3,7 @@
  * entry matching the server's response from the "getCmdLineOpts" command. The former operation may
  * be routed to a secondary in the replica set, whereas the latter must be routed to the primary.
  *
- * @tags: [assumes_read_preference_unchanged]
+ * @tags: [assumes_read_preference_unchanged, requires_collstats]
  */
 load('jstests/aggregation/extras/utils.js');
 
diff --git a/jstests/core/storefunc.js b/jstests/core/storefunc.js
index 42caed6f861..44b27802565 100644
--- a/jstests/core/storefunc.js
+++ b/jstests/core/storefunc.js
@@ -2,6 +2,7 @@
 //   requires_eval_command,
 //   requires_non_retryable_commands,
 //   requires_non_retryable_writes,
+//   requires_fastcount,
 // ]
 
 // Use a private sister database to avoid conflicts with other tests that use system.js
diff --git a/jstests/core/system_profile.js b/jstests/core/system_profile.js
index 20919512be8..81ac34d12d2 100644
--- a/jstests/core/system_profile.js
+++ b/jstests/core/system_profile.js
@@ -1,5 +1,9 @@
-// @tags: [does_not_support_stepdowns, requires_non_retryable_commands,
-// requires_non_retryable_writes]
+// @tags: [
+//   does_not_support_stepdowns,
+//   requires_non_retryable_commands,
+//   requires_non_retryable_writes,
+//   requires_collstats,
+// ]
 
 // Test various user operations against "system.profile" collection.  SERVER-18111.
 
diff --git a/jstests/core/temp_cleanup.js b/jstests/core/temp_cleanup.js
index 75b6952d824..f9e0432c890 100644
--- a/jstests/core/temp_cleanup.js
+++ b/jstests/core/temp_cleanup.js
@@ -1,4 +1,4 @@
-// @tags: [does_not_support_stepdowns]
+// @tags: [does_not_support_stepdowns, requires_fastcount]
 
 mydb = db.getSisterDB("temp_cleanup_test");
 
diff --git a/jstests/core/testminmax.js b/jstests/core/testminmax.js
index 5e874397a04..ea60191f3a9 100644
--- a/jstests/core/testminmax.js
+++ b/jstests/core/testminmax.js
@@ -1,3 +1,5 @@
+// @tags: [requires_fastcount]
+
 t = db.minmaxtest;
 t.drop();
 t.insert({
diff --git a/jstests/core/top.js b/jstests/core/top.js
index 3d98f5a7b2d..df7671207f4 100644
--- a/jstests/core/top.js
+++ b/jstests/core/top.js
@@ -5,7 +5,7 @@
  * former operation may be routed to a secondary in the replica set, whereas the latter must be
  * routed to the primary.
  *
- * @tags: [assumes_read_preference_unchanged]
+ * @tags: [assumes_read_preference_unchanged, requires_fastcount]
  */
 (function() {
     load("jstests/libs/stats.js");
diff --git a/jstests/core/type1.js b/jstests/core/type1.js
index 78c5f9b033c..aae040dee90 100644
--- a/jstests/core/type1.js
+++ b/jstests/core/type1.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.type1;
 t.drop();
diff --git a/jstests/core/uniqueness.js b/jstests/core/uniqueness.js
index e67d19dcbe6..a1763061af8 100644
--- a/jstests/core/uniqueness.js
+++ b/jstests/core/uniqueness.js
@@ -1,6 +1,7 @@
 // Cannot implicitly shard accessed collections because of not being able to create unique index
 // using hashed shard key pattern.
-// @tags: [cannot_create_unique_index_when_using_hashed_shard_key]
+//
+// @tags: [cannot_create_unique_index_when_using_hashed_shard_key, requires_fastcount]
 
 var res;
 
diff --git a/jstests/core/update5.js b/jstests/core/update5.js
index e0fee23c7fe..7f41096889c 100644
--- a/jstests/core/update5.js
+++ b/jstests/core/update5.js
@@ -1,7 +1,8 @@
 // Cannot implicitly shard accessed collections because of following errmsg: A single
 // update/delete on a sharded collection must contain an exact match on _id or contain the shard
 // key.
-// @tags: [assumes_unsharded_collection]
+//
+// @tags: [assumes_unsharded_collection, requires_fastcount]
 
 t = db.update5;
 
diff --git a/jstests/core/update_addToSet.js b/jstests/core/update_addToSet.js
index 5ea3e7d0550..bcf5b752846 100644
--- a/jstests/core/update_addToSet.js
+++ b/jstests/core/update_addToSet.js
@@ -1,7 +1,8 @@
 // Cannot implicitly shard accessed collections because of following errmsg: A single
 // update/delete on a sharded collection must contain an exact match on _id or contain the shard
 // key.
-// @tags: [assumes_unsharded_collection]
+//
+// @tags: [assumes_unsharded_collection, requires_fastcount]
 
 t = db.update_addToSet1;
 t.drop();
diff --git a/jstests/core/update_arraymatch5.js b/jstests/core/update_arraymatch5.js
index 16d215fe33b..f60f7816b99 100644
--- a/jstests/core/update_arraymatch5.js
+++ b/jstests/core/update_arraymatch5.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 t = db.update_arraymatch5;
 t.drop();
diff --git a/jstests/core/update_find_and_modify_id.js b/jstests/core/update_find_and_modify_id.js
index ca565cb0e8c..f6fd646d087 100644
--- a/jstests/core/update_find_and_modify_id.js
+++ b/jstests/core/update_find_and_modify_id.js
@@ -1,5 +1,7 @@
 // SERVER-4516 and SERVER-6913: test that update and findAndModify tolerate
 // an _id in the update document, as long as the _id will not be modified
+//
+// @tags: [requires_fastcount]
 
 var t = db.jstests_server4516;
 var startingDoc = {_id: 1, a: 1};
diff --git a/jstests/core/update_invalid1.js b/jstests/core/update_invalid1.js
index 3fd96d61f38..df3a3e19b1a 100644
--- a/jstests/core/update_invalid1.js
+++ b/jstests/core/update_invalid1.js
@@ -1,3 +1,4 @@
+// @tags: [requires_fastcount]
 
 t = db.update_invalid1;
 t.drop();
diff --git a/jstests/core/updatel.js b/jstests/core/updatel.js
index 6eebd35a150..ce5bd4d5dc7 100644
--- a/jstests/core/updatel.js
+++ b/jstests/core/updatel.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_writes]
+// @tags: [requires_non_retryable_writes, requires_fastcount]
 
 // The positional operator allows an update modifier field path to contain a sentinel ('$') path
 // part that is replaced with the numeric position of an array element matched by the update's query
diff --git a/jstests/core/upsert_shell.js b/jstests/core/upsert_shell.js
index af275d9a7b6..8d390e0fe16 100644
--- a/jstests/core/upsert_shell.js
+++ b/jstests/core/upsert_shell.js
@@ -1,7 +1,7 @@
 // Cannot implicitly shard accessed collections because of following errmsg: A single
 // update/delete on a sharded collection must contain an exact match on _id or contain the shard
 // key.
-// @tags: [assumes_unsharded_collection]
+// @tags: [assumes_unsharded_collection, requires_fastcount]
 
 // tests to make sure that the new _id is returned after the insert in the shell
 var l;
diff --git a/jstests/core/useindexonobjgtlt.js b/jstests/core/useindexonobjgtlt.js
index c790019af9e..4d2368f316f 100644
--- a/jstests/core/useindexonobjgtlt.js
+++ b/jstests/core/useindexonobjgtlt.js
@@ -1,10 +1,12 @@
-t = db.factories;

-t.drop();

-t.insert({name: "xyz", metro: {city: "New York", state: "NY"}});

-t.ensureIndex({metro: 1});

-

-assert(db.factories.find().count());

-

-assert.eq(1, db.factories.find({metro: {city: "New York", state: "NY"}}).hint({metro: 1}).count());

-

-assert.eq(1, db.factories.find({metro: {$gte: {city: "New York"}}}).hint({metro: 1}).count());

+// @tags: [requires_fastcount]
+
+t = db.factories;
+t.drop();
+t.insert({name: "xyz", metro: {city: "New York", state: "NY"}});
+t.ensureIndex({metro: 1});
+
+assert(db.factories.find().count());
+
+assert.eq(1, db.factories.find({metro: {city: "New York", state: "NY"}}).hint({metro: 1}).count());
+
+assert.eq(1, db.factories.find({metro: {$gte: {city: "New York"}}}).hint({metro: 1}).count());
\ No newline at end of file
diff --git a/jstests/core/views/views_all_commands.js b/jstests/core/views/views_all_commands.js
index bceae973973..6e045d9fccc 100644
--- a/jstests/core/views/views_all_commands.js
+++ b/jstests/core/views/views_all_commands.js
@@ -1,5 +1,10 @@
-// @tags: [does_not_support_stepdowns, requires_getmore, requires_non_retryable_commands,
-// requires_non_retryable_writes]
+// @tags: [
+//   does_not_support_stepdowns,
+//   requires_getmore,
+//   requires_non_retryable_commands,
+//   requires_non_retryable_writes,
+//   requires_fastcount,
+// ]
 
 /*
  * Declaratively-defined tests for views for all database commands. This file contains a map of test
diff --git a/jstests/core/views/views_collation.js b/jstests/core/views/views_collation.js
index e63f348d4f2..83f5be0a30b 100644
--- a/jstests/core/views/views_collation.js
+++ b/jstests/core/views/views_collation.js
@@ -1,4 +1,4 @@
-// @tags: [does_not_support_stepdowns, requires_non_retryable_commands]
+// @tags: [does_not_support_stepdowns, requires_non_retryable_commands, requires_fastcount]
 
 /**
  * Tests the behavior of operations when interacting with a view's default collation.
diff --git a/jstests/core/views/views_count.js b/jstests/core/views/views_count.js
index 932021e899f..cfef3775569 100644
--- a/jstests/core/views/views_count.js
+++ b/jstests/core/views/views_count.js
@@ -1,4 +1,7 @@
 // Test the count command with views.
+//
+// @tags: [requires_fastcount]
+
 (function() {
     "use strict";
 
diff --git a/jstests/core/views/views_rename.js b/jstests/core/views/views_rename.js
index 63a87a1d61d..2d6de5290d3 100644
--- a/jstests/core/views/views_rename.js
+++ b/jstests/core/views/views_rename.js
@@ -1,4 +1,4 @@
-// @tags: [requires_non_retryable_commands]
+// @tags: [requires_non_retryable_commands, requires_fastcount]
 
 (function() {
     // SERVER-30406 Test that renaming system.views correctly invalidates the view catalog
diff --git a/jstests/core/write_result.js b/jstests/core/write_result.js
index 4eb1abed2d7..c81908b8a5a 100644
--- a/jstests/core/write_result.js
+++ b/jstests/core/write_result.js
@@ -6,6 +6,7 @@
 //   assumes_unsharded_collection,
 //   assumes_write_concern_unchanged,
 //   requires_non_retryable_writes,
+//   requires_fastcount
 // ]
 
 //