From 2bf13c597d1811d0c6a337d15a9c0224f6e40047 Mon Sep 17 00:00:00 2001
From: ivanmorozov333 <ivanmorozov@ydb.tech>
Date: Fri, 6 Dec 2024 18:29:52 +0300
Subject: [PATCH] fix compaction levels constuction (#12351)

---
 .../engines/storage/optimizer/lcbuckets/planner/optimizer.cpp    | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ydb/core/tx/columnshard/engines/storage/optimizer/lcbuckets/planner/optimizer.cpp b/ydb/core/tx/columnshard/engines/storage/optimizer/lcbuckets/planner/optimizer.cpp
index b26a2b90d041..c229de85a682 100644
--- a/ydb/core/tx/columnshard/engines/storage/optimizer/lcbuckets/planner/optimizer.cpp
+++ b/ydb/core/tx/columnshard/engines/storage/optimizer/lcbuckets/planner/optimizer.cpp
@@ -27,6 +27,7 @@ TOptimizerPlanner::TOptimizerPlanner(const ui64 pathId, const std::shared_ptr<IS
         for (auto it = levelConstructors.rbegin(); it != levelConstructors.rend(); ++it) {
             --idx;
             Levels.emplace_back((*it)->BuildLevel(nextLevel, idx, Counters->GetLevelCounters(idx)));
+            nextLevel = Levels.back();
         }
     } else {
         Levels.emplace_back(std::make_shared<TZeroLevelPortions>(2, nullptr, Counters->GetLevelCounters(2), TDuration::Max(), 1 << 20));