fix eviction triggered by pure TTL

2 files changed, 4 insertions, 4 deletions

diff --git a/ydb/core/tx/columnshard/engines/column_engine_logs.cpp b/ydb/core/tx/columnshard/engines/column_engine_logs.cpp
index 1350f74b9b7..a53c9f92b8c 100644
--- a/ydb/core/tx/columnshard/engines/column_engine_logs.cpp
+++ b/ydb/core/tx/columnshard/engines/column_engine_logs.cpp
@@ -827,7 +827,7 @@ std::shared_ptr<TColumnEngineChanges> TColumnEngineForLogs::StartTtl(const THash
                 if (auto max = info.MaxValue(ttlColumnId)) {
                     bool keep = NArrow::ScalarLess(expireTimestamp, max);
 
-                    if (keep && allowEviction) {
+                    if (keep && allowEviction && ttl.HasTiers()) {
                         TString tierName;
                         for (auto& tierRef : ttl.OrderedTiers) { // TODO: lower/upper_bound + move into TEviction
                             auto& tierInfo = tierRef.Get();
diff --git a/ydb/core/tx/columnshard/engines/tier_info.h b/ydb/core/tx/columnshard/engines/tier_info.h
index 92ffa8d6607..79e9153409a 100644
--- a/ydb/core/tx/columnshard/engines/tier_info.h
+++ b/ydb/core/tx/columnshard/engines/tier_info.h
@@ -107,12 +107,12 @@ struct TTiering {
     TSet<TTierRef> OrderedTiers; // Tiers ordered by border
     std::shared_ptr<TTierInfo> Ttl;
 
-    bool Empty() const {
-        return OrderedTiers.empty();
+    bool HasTiers() const {
+        return !OrderedTiers.empty();
     }
 
     void Add(const std::shared_ptr<TTierInfo>& tier) {
-        if (!Empty()) {
+        if (HasTiers()) {
             // TODO: support different ttl columns
             Y_VERIFY(tier->EvictColumnName == OrderedTiers.begin()->Get().EvictColumnName);
         }