From 1e08db938d54fbe606fd1794fe6662679a54d916 Mon Sep 17 00:00:00 2001
From: Nikolai Kochetov <nik-kochetov@yandex-team.ru>
Date: Wed, 30 Aug 2017 21:04:47 +0300
Subject: [PATCH] added chech that root starts with '/' in zookeeper config
 file [#CLICKHOUSE-3031]

---
 dbms/src/Common/ZooKeeper/ZooKeeper.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/dbms/src/Common/ZooKeeper/ZooKeeper.cpp b/dbms/src/Common/ZooKeeper/ZooKeeper.cpp
index 591cc6171ba..1154310ef42 100644
--- a/dbms/src/Common/ZooKeeper/ZooKeeper.cpp
+++ b/dbms/src/Common/ZooKeeper/ZooKeeper.cpp
@@ -151,7 +151,12 @@ struct ZooKeeperArgs
             hosts += host;
         }
 
-        hosts += root;
+        if (!root.empty())
+        {
+            if (root.front() != '/')
+                throw KeeperException(std::string("Root path in config file should starts with '/', but got ") + root);
+            hosts += root;
+        }
     }
 
     std::string hosts;