diff --git a/src/Databases/DataLake/RestCatalog.cpp b/src/Databases/DataLake/RestCatalog.cpp
index 43d85d2e61a23..ac657fe46125c 100644
--- a/src/Databases/DataLake/RestCatalog.cpp
+++ b/src/Databases/DataLake/RestCatalog.cpp
@@ -1167,6 +1167,13 @@ void RestCatalog::createNamespaceIfNotExists(const String & namespace_name, cons
         auto timer = DB::CurrentThread::getProfileEvents().timer(ProfileEvents::DataLakeRestCatalogCreateNamespaceMicroseconds);
         sendRequest(endpoint, request_body);
     }
+    catch (const DB::HTTPException & e)
+    {
+        if (e.getHTTPStatus() == Poco::Net::HTTPResponse::HTTP_CONFLICT)
+            LOG_DEBUG(log, "Namespace {} already exists", namespace_name);
+        else
+            DB::tryLogCurrentException(log);
+    }
     catch (...)
     {
         DB::tryLogCurrentException(log);
diff --git a/src/IO/ReadWriteBufferFromHTTP.cpp b/src/IO/ReadWriteBufferFromHTTP.cpp
index 02834987d5387..29d108ac9ca21 100644
--- a/src/IO/ReadWriteBufferFromHTTP.cpp
+++ b/src/IO/ReadWriteBufferFromHTTP.cpp
@@ -28,7 +28,8 @@ bool isRetriableError(const Poco::Net::HTTPResponse::HTTPStatus http_status) noe
         Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_FOUND,
         Poco::Net::HTTPResponse::HTTPStatus::HTTP_FORBIDDEN,
         Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_IMPLEMENTED,
-        Poco::Net::HTTPResponse::HTTPStatus::HTTP_METHOD_NOT_ALLOWED};
+        Poco::Net::HTTPResponse::HTTPStatus::HTTP_METHOD_NOT_ALLOWED,
+        Poco::Net::HTTPResponse::HTTPStatus::HTTP_CONFLICT};
 
     return std::all_of(
         non_retriable_errors.begin(), non_retriable_errors.end(), [&](const auto status) { return http_status != status; });