log when a request starts running in querier (#6525)

* log when a request starts running in querier

Signed-off-by: Ahmed Hassan <[email protected]>

* log when a request starts running in querier for frontend processor

Signed-off-by: Ahmed Hassan <[email protected]>

---------

Signed-off-by: Ahmed Hassan <[email protected]>

Author: afhassan

pkg/querier/worker/frontend_processor.go

@@ -142,6 +142,9 @@ func (fp *frontendProcessor) runRequest(ctx context.Context, request *httpgrpc.H
 	}
 	ctx = util_log.ContextWithHeaderMap(ctx, headerMap)
 	logger := util_log.WithContext(ctx, fp.log)
+	if statsEnabled {
+		level.Info(logger).Log("msg", "started running request")
+	}
 
 	response, err := fp.handler.Handle(ctx, request)
 	if err != nil {

pkg/querier/worker/scheduler_processor.go

@@ -156,6 +156,9 @@ func (sp *schedulerProcessor) querierLoop(c schedulerpb.SchedulerForQuerier_Quer
 				ctx = spanCtx
 			}
 			logger := util_log.WithContext(ctx, sp.log)
+			if request.StatsEnabled {
+				level.Info(logger).Log("msg", "started running request")
+			}
 			sp.runRequest(ctx, logger, request.QueryID, request.FrontendAddress, request.StatsEnabled, request.HttpRequest)
 
 			if err = ctx.Err(); err != nil {