From dfb4829637bb9c949a499e163d0a95f150fb895b Mon Sep 17 00:00:00 2001
From: Oleksandra Matviienko <al.zzzeebra@gmail.com>
Date: Mon, 27 Apr 2026 11:37:35 +0200
Subject: [PATCH] Create ZK nodes container before starting CuratorCache

PathChildrenCache invoked EnsureContainers internally during start(), so
the parent znode existed when publishCurrentServer ran. CuratorCache does
not, so on a fresh ZK creatingParentsIfNeeded reaches ZKPaths.mkdirs with
the trailing-slash forPath argument and fails with
"Path must not end with / character", aborting Spring startup.
---
 .../thingsboard/server/queue/discovery/ZkDiscoveryService.java   | 1 +
 1 file changed, 1 insertion(+)

diff --git a/common/queue/src/main/java/org/thingsboard/server/queue/discovery/ZkDiscoveryService.java b/common/queue/src/main/java/org/thingsboard/server/queue/discovery/ZkDiscoveryService.java
index a1cbe6332e..47c2761020 100644
--- a/common/queue/src/main/java/org/thingsboard/server/queue/discovery/ZkDiscoveryService.java
+++ b/common/queue/src/main/java/org/thingsboard/server/queue/discovery/ZkDiscoveryService.java
@@ -241,6 +241,7 @@ public class ZkDiscoveryService implements DiscoveryService {
             client = CuratorFrameworkFactory.newClient(zkUrl, zkSessionTimeout, zkConnectionTimeout, new RetryForever(zkRetryInterval));
             client.start();
             client.blockUntilConnected();
+            client.createContainers(zkNodesDir);
             cache = CuratorCache.builder(client, zkNodesDir).build();
             cache.start();
             stopped = false;