YQL-21299: Parse Kikimr ClusterMapping

#### Parse Kikimr ClusterMapping ✎

- Added support for parsing cluster mapping from Kikimr provider configuration
- Implemented conditional logic to handle Kikimr cluster mapping when Ydb provider is not present
- Extended gateway utilities to properly process Kikimr-specific cluster configuration
- Ensured backward compatibility with existing Ydb provider cluster mapping parsing

<a href="https://nda.ya.ru/t/qa0kX64r7DqvtN"><font size="2">Autodescription by Yandex Code Assistant</font></a>
commit_hash:9c9a78dbe23ef0d2f4842160ce8572effce2eb5a

1 files changed, 5 insertions, 0 deletions

diff --git a/yql/essentials/providers/common/gateways_utils/gateways_utils.cpp b/yql/essentials/providers/common/gateways_utils/gateways_utils.cpp
index 8c5742580a8..18f3d7cb972 100644
--- a/yql/essentials/providers/common/gateways_utils/gateways_utils.cpp
+++ b/yql/essentials/providers/common/gateways_utils/gateways_utils.cpp
@@ -94,6 +94,11 @@ void GetClusterMappingFromGateways(const NYql::TGatewaysConfig& gateways, THashM
                     TString{YdbProviderName},
                     &clusterMapping);
     }
+    if (!gateways.HasYdb() && gateways.HasKikimr()) {
+        AddClusters(gateways.GetKikimr().GetClusterMapping(),
+                    TString{KikimrProviderName},
+                    &clusterMapping);
+    }
 }
 
 } // namespace NYql