From 86f7fbce85c22722de874cdacf75bdd56281d724 Mon Sep 17 00:00:00 2001
From: Andrey Zvonov <32552679+zvonand@users.noreply.github.com>
Date: Tue, 4 Aug 2026 11:43:50 +0200
Subject: [PATCH] Merge pull request #2124 from
 Altinity/feature/antalya-26.6/pr-1762

Antalya 26.6: Do not read empty namespaces from catalog
---
 src/Databases/DataLake/RestCatalog.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Databases/DataLake/RestCatalog.cpp b/src/Databases/DataLake/RestCatalog.cpp
index 3b3b86785c5a..8ff94441d41a 100644
--- a/src/Databases/DataLake/RestCatalog.cpp
+++ b/src/Databases/DataLake/RestCatalog.cpp
@@ -1315,6 +1315,13 @@ void RestCatalog::getNamespacesRecursive(
     {
         chassert(current_namespace.starts_with(base_namespace));
 
+        /// Protection from subnamepsaces with empty names
+        if (current_namespace == base_namespace)
+        {
+            LOG_WARNING(log, "Namespace {} has a subnamespace with empty name. This is an error in catalog implementation.", base_namespace);
+            continue;
+        }
+
         if (stop_condition && stop_condition(current_namespace))
             break;