3 files changed, 14 insertions, 4 deletions
diff --git a/jstests/core/txns/noop_createIndexes_not_blocked_by_txn.js b/jstests/core/txns/noop_createIndexes_not_blocked_by_txn.js
index ebf1b232ff7..ef03baab8cd 100644
--- a/jstests/core/txns/noop_createIndexes_not_blocked_by_txn.js
+++ b/jstests/core/txns/noop_createIndexes_not_blocked_by_txn.js
@@ -24,7 +24,8 @@ if (isMongos) {
 
 const createIndexesCommand = {
     createIndexes: collName,
-    indexes: [{key: {a: 1}, name: "a_1"}]
+    indexes: [{key: {a: 1}, name: "a_1"}],
+    writeConcern: {w: 'majority'},
 };
 assert.commandWorked(sessionDB.runCommand(createIndexesCommand));
 
diff --git a/jstests/core/txns/prepared_transactions_do_not_block_non_conflicting_ddl.js b/jstests/core/txns/prepared_transactions_do_not_block_non_conflicting_ddl.js
index 0458f213960..1f13af52e0f 100644
--- a/jstests/core/txns/prepared_transactions_do_not_block_non_conflicting_ddl.js
+++ b/jstests/core/txns/prepared_transactions_do_not_block_non_conflicting_ddl.js
@@ -40,7 +40,8 @@ testSuccess(otherDBName, createCmd);
 jsTest.log("Test 'createIndexes'.");
 const createIndexesCmd = {
     createIndexes: collName,
-    indexes: [{key: {x: 1}, name: "x_1"}]
+    indexes: [{key: {x: 1}, name: "x_1"}],
+    writeConcern: {w: 'majority'},
 };
 testSuccess(otherDBName, createIndexesCmd);
 
@@ -51,7 +52,11 @@ const dropIndexesCmd = {
 };
 testSuccess(otherDBName, dropIndexesCmd);
 
-sessionColl.createIndex({multiKeyField: 1});
+assert.commandWorked(sessionDB.runCommand({
+    createIndexes: collName,
+    indexes: [{name: 'multiKeyField_1', key: {multiKeyField: 1}}],
+    writeConcern: {w: 'majority'},
+}));
 jsTest.log("Test 'insert' that enables multi-key index on the same collection.");
 const insertAndSetMultiKeyCmd = {
     insert: collName,
diff --git a/jstests/core/txns/read_own_multikey_writes.js b/jstests/core/txns/read_own_multikey_writes.js
index 1c3dc450280..0def1cdf759 100644
--- a/jstests/core/txns/read_own_multikey_writes.js
+++ b/jstests/core/txns/read_own_multikey_writes.js
@@ -16,7 +16,11 @@ const sessionColl = sessionDb.getCollection(collName);
 assert.commandWorked(sessionDb.runCommand({create: collName}));
 
 assert.commandWorked(sessionColl.insert({a: 1}));
-assert.commandWorked(sessionColl.createIndex({a: 1}));
+assert.commandWorked(sessionDb.runCommand({
+    createIndexes: collName,
+    indexes: [{name: 'a_1', key: {a: 1}}],
+    writeConcern: {w: 'majority'},
+}));
 
 session.startTransaction();
 assert.commandWorked(sessionColl.update({}, {$set: {a: [1, 2, 3]}}));