diff --git a/cdc/puller/ddl_puller.go b/cdc/puller/ddl_puller.go
index 2b55481b80b..2a1e7edf493 100644
--- a/cdc/puller/ddl_puller.go
+++ b/cdc/puller/ddl_puller.go
@@ -115,17 +115,16 @@ func (p *ddlJobPullerImpl) handleRawKVEntry(ctx context.Context, ddlRawKV *model
 	if err != nil {
 		return errors.Trace(err)
 	}
-	if job == nil {
-		return nil
-	}
 
-	skip, err := p.handleJob(job)
-	if err != nil {
-		return cerror.WrapError(cerror.ErrHandleDDLFailed,
-			err, job.Query, job.StartTS, job.StartTS)
-	}
-	if skip {
-		return nil
+	if job != nil {
+		skip, err := p.handleJob(job)
+		if err != nil {
+			return cerror.WrapError(cerror.ErrHandleDDLFailed,
+				err, job.Query, job.StartTS, job.StartTS)
+		}
+		if skip {
+			return nil
+		}
 	}
 
 	jobEntry := &model.DDLJobEntry{
@@ -169,7 +168,9 @@ func (p *ddlJobPullerImpl) run(ctx context.Context) error {
 
 func (p *ddlJobPullerImpl) runMultiplexing(ctx context.Context) error {
 	eg, ctx := errgroup.WithContext(ctx)
-	eg.Go(func() error { return p.multiplexingPuller.Run(ctx) })
+	eg.Go(func() error {
+		return p.multiplexingPuller.Run(ctx)
+	})
 	eg.Go(func() error {
 		for {
 			var ddlRawKV *model.RawKVEntry
@@ -694,7 +695,7 @@ func (h *ddlPullerImpl) Run(ctx context.Context) error {
 	g.Go(func() error { return h.ddlJobPuller.Run(ctx) })
 
 	g.Go(func() error {
-		cc := clock.NewMock()
+		cc := clock.New()
 		ticker := cc.Ticker(ddlPullerStuckWarnDuration)
 		defer ticker.Stop()
 		lastResolvedTsAdvancedTime := cc.Now()
@@ -711,15 +712,15 @@ func (h *ddlPullerImpl) Run(ctx context.Context) error {
 						zap.Duration("duration", duration),
 						zap.Uint64("resolvedTs", atomic.LoadUint64(&h.resolvedTS)))
 				}
-			case entry := <-h.ddlJobPuller.Output():
-				if entry.OpType == model.OpTypeResolved {
-					if entry.CRTs > atomic.LoadUint64(&h.resolvedTS) {
-						atomic.StoreUint64(&h.resolvedTS, entry.CRTs)
+			case e := <-h.ddlJobPuller.Output():
+				if e.OpType == model.OpTypeResolved {
+					if e.CRTs > atomic.LoadUint64(&h.resolvedTS) {
+						atomic.StoreUint64(&h.resolvedTS, e.CRTs)
 						lastResolvedTsAdvancedTime = cc.Now()
 						continue
 					}
 				}
-				h.add2Pending(entry.Job)
+				h.add2Pending(e.Job)
 			}
 		}
 	})