From eca62f753cc3c643b47abc08bad38f44fbc83c73 Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Tue, 24 Nov 2015 06:21:37 +0300
Subject: [PATCH] dbms: fixed error [#METR-19024].

---
 .../AggregateFunctions/AggregateFunctionQuantileTDigest.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/dbms/include/DB/AggregateFunctions/AggregateFunctionQuantileTDigest.h b/dbms/include/DB/AggregateFunctions/AggregateFunctionQuantileTDigest.h
index c4e8ad43485..78595aa2f19 100644
--- a/dbms/include/DB/AggregateFunctions/AggregateFunctionQuantileTDigest.h
+++ b/dbms/include/DB/AggregateFunctions/AggregateFunctionQuantileTDigest.h
@@ -90,7 +90,7 @@ class MergingDigest
 	using Centroid = tdigest::Centroid<Value, CentroidCount>;
 
 	/// Сразу будет выделена память на несколько элементов так, чтобы состояние занимало 64 байта.
-	static constexpr size_t bytes_in_arena = 64 - sizeof(DB::PODArray<Centroid>) - sizeof(TotalCount) * 2;
+	static constexpr size_t bytes_in_arena = 64 - sizeof(DB::PODArray<Centroid>) - sizeof(TotalCount) - sizeof(uint32_t);
 
 	using Summary = DB::PODArray<Centroid, bytes_in_arena / sizeof(Centroid), AllocatorWithStackMemory<Allocator<false>, bytes_in_arena>>;
 
@@ -115,7 +115,7 @@ class MergingDigest
 		using CountType = uint32_t;
 		using KeyBits = uint32_t;
 
-		static constexpr size_t PART_SIZE_BITS = 11;
+		static constexpr size_t PART_SIZE_BITS = 8;
 
 		using Transform = RadixSortFloatTransform<KeyBits>;
 		using Allocator = RadixSortMallocAllocator;
@@ -296,9 +296,9 @@ public:
 			b_index = sum + (summary[i].count - 1) * 0.5;
 		}
 
-		auto res_of_results = interpolate(index, a_index, a_mean, b_index, b_mean);
+		auto rest_of_results = interpolate(index, a_index, a_mean, b_index, b_mean);
 		for (; result_num < size; ++result_num)
-			result[levels_permutation[result_num]] = res_of_results;
+			result[levels_permutation[result_num]] = rest_of_results;
 	}
 
 	/** Объединить с другим состоянием.