1 files changed, 32 insertions, 0 deletions
diff --git a/jstests/core/txns/drop_collection_not_blocked_by_txn.js b/jstests/core/txns/drop_collection_not_blocked_by_txn.js
new file mode 100644
index 00000000000..626a7128a5c
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+++ b/jstests/core/txns/drop_collection_not_blocked_by_txn.js
@@ -0,0 +1,32 @@
+/**
+ * Test that drop collection only takes database IX lock and will not be blocked by transactions.
+ *
+ * @tags: [uses_transactions, requires_db_locking, assumes_unsharded_collection]
+ */
+
+(function() {
+    "use strict";
+
+    let rst = new ReplSetTest({nodes: 1});
+    rst.startSet();
+    rst.initiate();
+
+    let db = rst.getPrimary().getDB("test");
+
+    assert.commandWorked(db.runCommand({insert: "a", documents: [{x: 1}]}));
+    assert.commandWorked(db.runCommand({insert: "b", documents: [{x: 1}]}));
+
+    const session = db.getMongo().startSession();
+    const sessionDb = session.getDatabase("test");
+
+    session.startTransaction();
+    // This holds a database IX lock and a collection IX lock on "a".
+    sessionDb.a.insert({y: 1});
+
+    // This only requires database IX lock.
+    assert.commandWorked(db.runCommand({drop: "b"}));
+
+    session.commitTransaction();
+
+    rst.stopSet();
+})();