Add some log. (#16978)

Signed-off-by: Nsunby <bingyi.sun@zilliz.com>
Co-authored-by: Nsunby <bingyi.sun@zilliz.com>

internal/querycoord/task.go

@@ -2278,7 +2278,9 @@ func (lbt *loadBalanceTask) globalPostExecute(ctx context.Context) error {
 
 			log.Debug("removing offline nodes from replicas and segments...",
 				zap.Int("len(replicas)", len(replicas)),
-				zap.Int("len(segments)", len(segments)))
+				zap.Int("len(segments)", len(segments)),
+				zap.Int64("trigger task ID", lbt.getTaskID()),
+			)
 			wg := sync.WaitGroup{}
 			for _, replica := range replicas {
 				wg.Add(1)

internal/querycoord/task_scheduler.go

@@ -576,7 +576,10 @@ func (scheduler *TaskScheduler) scheduleLoop() {
 	var triggerTask task
 
 	processInternalTaskFn := func(activateTasks []task, triggerTask task) {
-		log.Debug("scheduleLoop: num of child task", zap.Int("num child task", len(activateTasks)))
+		log.Debug("scheduleLoop: num of child task",
+			zap.Int("num child task", len(activateTasks)),
+			zap.Int64("trigger task ID", triggerTask.getTaskID()),
+		)
 		for _, childTask := range activateTasks {
 			if childTask != nil {
 				log.Debug("scheduleLoop: add an activate task to activateChan", zap.Int64("taskID", childTask.getTaskID()))