Fix BufferPageAllocSize propagation (#26520)

Author: abyss7

ydb/core/kqp/executer_actor/kqp_executer_impl.h

@@ -167,9 +167,7 @@ class TKqpExecuterBase : public TActor<TDerived> {
             ArrayBufferMinFillPercentage = tableServiceConfig.GetArrayBufferMinFillPercentage();
         }
 
-        if (tableServiceConfig.HasBufferPageAllocSize()) {
-            BufferPageAllocSize = tableServiceConfig.GetBufferPageAllocSize();
-        }
+        BufferPageAllocSize = tableServiceConfig.GetBufferPageAllocSize();
 
         EnableReadsMerge = *MergeDatashardReadsControl() == 1;
         TasksGraph.GetMeta().Snapshot = IKqpGateway::TKqpSnapshot(Request.Snapshot.Step, Request.Snapshot.TxId);
@@ -1028,7 +1026,7 @@ class TKqpExecuterBase : public TActor<TDerived> {
             } else {
                 settings = *stageInfo.Meta.ResolvedSinkSettings;
             }
-        
+
             auto& lockTxId = TasksGraph.GetMeta().LockTxId;
             if (lockTxId) {
                 settings.SetLockTxId(*lockTxId);
@@ -2339,7 +2337,7 @@ class TKqpExecuterBase : public TActor<TDerived> {
     const NKikimrConfig::TTableServiceConfig::EBlockTrackingMode BlockTrackingMode;
     const bool VerboseMemoryLimitException;
     TMaybe<ui8> ArrayBufferMinFillPercentage;
-    TMaybe<ui8> BufferPageAllocSize;
+    TMaybe<ui64> BufferPageAllocSize;
 
     ui64 StatCollectInflightBytes = 0;
     ui64 StatFinishInflightBytes = 0;

ydb/core/kqp/executer_actor/kqp_planner.h

@@ -65,7 +65,7 @@ class TKqpPlanner {
         const std::shared_ptr<NKikimr::NKqp::NComputeActor::IKqpNodeComputeActorFactory>& CaFactory_;
         const NKikimrConfig::TTableServiceConfig::EBlockTrackingMode BlockTrackingMode;
         const TMaybe<ui8> ArrayBufferMinFillPercentage;
-        const TMaybe<ui8> BufferPageAllocSize;
+        const TMaybe<ui64> BufferPageAllocSize;
         const bool VerboseMemoryLimitException;
     };
 
@@ -138,7 +138,7 @@ class TKqpPlanner {
     TVector<TProgressStat> LastStats;
     const NKikimrConfig::TTableServiceConfig::EBlockTrackingMode BlockTrackingMode;
     const TMaybe<ui8> ArrayBufferMinFillPercentage;
-    const TMaybe<ui8> BufferPageAllocSize;
+    const TMaybe<ui64> BufferPageAllocSize;
     const bool VerboseMemoryLimitException;
 
 public: