1 files changed, 60 insertions, 0 deletions
diff --git a/jstests/noPassthrough/server54064.js b/jstests/noPassthrough/server54064.js
new file mode 100644
index 00000000000..e08449a79bf
--- /dev/null
+++ b/jstests/noPassthrough/server54064.js
@@ -0,0 +1,60 @@
+/**
+ * Assert that arbiters periodically clear out their logical session cache. Inability to do so
+ * prohibits new clients from connecting.
+ *
+ * @tags: [requires_replication]
+ */
+(function() {
+    const name = "server54064";
+    const replSet = new ReplSetTest({
+        name: name,
+        nodes: 2,
+        // `disableLogicalSessionCacheRefresh` is true by default, but is disabled for testing
+        // purposes
+        // in servers spawned from the shell.
+        nodeOptions: {
+            setParameter: {
+                // Each refresh on an arbiter will empty the cache.
+                logicalSessionRefreshMillis: 10000,
+                // The number of connections/sessions before the cache is full, prohibiting new
+                // clients
+                // from connecting.
+                maxSessions: 3,
+                disableLogicalSessionCacheRefresh: false
+            }
+        }
+    });
+    const nodes = replSet.nodeList();
+
+    replSet.startSet();
+    replSet.initiate({
+        _id: name,
+        members: [{_id: 0, host: nodes[0]}, {_id: 1, host: nodes[1], arbiterOnly: true}],
+    });
+
+    let arbConn = replSet.getArbiter();
+    assert.soon(() => {
+        // Connect to mongo in a tight loop to exhaust the number of available logical sessions in
+        // the
+        // cache.
+        const result = new Mongo(arbConn.host).adminCommand({hello: 1});
+        if (result['ok'] === 0) {
+            assert.commandFailedWithCode(result, ErrorCodes.TooManyLogicalSessions);
+            return true;
+        }
+        return false;
+    });
+
+    assert.soon(() => {
+        // Once we observe that the number of sessions is maxed out, loop again to confirm that the
+        // cache eventually does get cleared.
+        const result = new Mongo(arbConn.host).adminCommand({hello: 1});
+        if (result['ok'] === 0) {
+            assert.commandFailedWithCode(result, ErrorCodes.TooManyLogicalSessions);
+            return false;
+        }
+        return true;
+    });
+
+    replSet.stopSet();
+})();