always enable & allow spilling in channels (#6462)

Author: gridnevvvit

ydb/core/kqp/ut/olap/clickbench_ut.cpp

@@ -168,9 +168,8 @@ Y_UNIT_TEST_SUITE(KqpOlapClickbench) {
                 LIMIT 10
             )")
             //.SetExpectedReply("[[[\"40999\"];[4];1u];[[\"40998\"];[3];1u];[[\"40997\"];[2];1u]]")
-            // Should be fixed in https://st.yandex-team.ru/KIKIMR-17009
-            // .SetExpectedReadNodeType("TableFullScan");
-            .SetExpectedReadNodeType("Aggregate-TableFullScan");
+            .SetExpectedReadNodeType("TableFullScan");
+            // .SetExpectedReadNodeType("Aggregate-TableFullScan");
         q9.FillExpectedAggregationGroupByPlanOptions();
 
         TAggregationTestCase q12;
@@ -216,7 +215,7 @@ Y_UNIT_TEST_SUITE(KqpOlapClickbench) {
                 LIMIT 10;
             )")
             .AddExpectedPlanOptions("KqpOlapFilter")
-            .SetExpectedReadNodeType("Aggregate-TableFullScan");
+            .SetExpectedReadNodeType("TableFullScan");
         q22.FillExpectedAggregationGroupByPlanOptions();
 
         TAggregationTestCase q39;

ydb/core/protos/table_service_config.proto

@@ -47,7 +47,7 @@ message TTableServiceConfig {
 
     message TSpillingServiceConfig {
         message TLocalFileConfig {
-            optional bool Enable = 1 [default = false];
+            optional bool Enable = 1 [default = true];
             optional string Root = 2 [default = "/tmp/kikimr_spilling/"];
             optional uint64 MaxTotalSize = 3 [default = 21474836480];  // 20 GiB
             optional uint64 MaxFileSize = 4 [default = 5368709120];    // 5 GiB