deriv metrics has been fixed

1 files changed, 6 insertions, 1 deletions

diff --git a/ydb/library/yql/providers/dq/actors/task_controller.cpp b/ydb/library/yql/providers/dq/actors/task_controller.cpp
index 294d94920ab..a49b882d227 100644
--- a/ydb/library/yql/providers/dq/actors/task_controller.cpp
+++ b/ydb/library/yql/providers/dq/actors/task_controller.cpp
@@ -254,7 +254,12 @@ private:
                     }
 
                     if (publicCounterName) {
-                        *ServiceCounters.PublicCounters->GetNamedCounter("name", publicCounterName, isDeriv) = v.Count;
+                        auto& counter = *ServiceCounters.PublicCounters->GetNamedCounter("name", publicCounterName, isDeriv);
+                        if (isDeriv) {
+                            counter += v.Count;
+                        } else {
+                            counter = v.Count;
+                        }
                     }
                 }
             }