[YQL-8804] Fix top UDF on duplicate keys

ref:a4b307166ed08c1db25c90037fe0d7603d6ea0af

1 files changed, 1 insertions, 1 deletions

diff --git a/ydb/library/yql/udfs/common/top/top_udf.cpp b/ydb/library/yql/udfs/common/top/top_udf.cpp
index 748ffe489b3..e66f4f11500 100644
--- a/ydb/library/yql/udfs/common/top/top_udf.cpp
+++ b/ydb/library/yql/udfs/common/top/top_udf.cpp
@@ -66,7 +66,7 @@ struct TGenericPairCompare {
 template <typename TValue, typename TCompare, typename TAllocator>
 class TTopKeeperContainer {
     TTopKeeper<TValue, TCompare, true, TAllocator> Keeper;
-    using TOrderedSet = TSet<TValue, TCompare, TAllocator>;
+    using TOrderedSet = TMultiSet<TValue, TCompare, TAllocator>;
     TMaybe<TOrderedSet> OrderedSet;
     size_t MaxSize = 0;
     bool Finalized = false;