Fixed default value

Author: GrigoriyPA

ydb/core/fq/libs/config/protos/row_dispatcher.proto

@@ -26,7 +26,7 @@ message TJsonParserConfig {
 }
 
 message TCompileServiceConfig {
-    uint64 ParallelCompilationLimit = 1;  // 1 by default, 0 <=> unlimited
+    uint64 ParallelCompilationLimit = 1;  // 1 by default
 }
 
 message TRowDispatcherConfig {

ydb/core/fq/libs/row_dispatcher/purecalc_compilation/compile_service.cpp

@@ -111,7 +111,7 @@ class TPurecalcCompileService : public NActors::TActor<TPurecalcCompileService>
     TPurecalcCompileService(const NConfig::TCompileServiceConfig& config, NMonitoring::TDynamicCounterPtr counters)
         : TBase(&TPurecalcCompileService::StateFunc)
         , Config(config)
-        , InFlightLimit(Config.GetParallelCompilationLimit() ? Config.GetParallelCompilationLimit() : std::numeric_limits<ui64>::max())
+        , InFlightLimit(Config.GetParallelCompilationLimit() ? Config.GetParallelCompilationLimit() : 1)
         , LogPrefix("TPurecalcCompileService: ")
         , Counters(counters)
     {}