diff --git a/pkg/controllers/apis/job_info.go b/pkg/controllers/apis/job_info.go
index 2094ed0a1b..aec52378b5 100644
--- a/pkg/controllers/apis/job_info.go
+++ b/pkg/controllers/apis/job_info.go
@@ -40,11 +40,11 @@ func (ji *JobInfo) Clone() *JobInfo {
 		Name:      ji.Name,
 		Job:       ji.Job,
 
-		Pods: make(map[string]map[string]*v1.Pod),
+		Pods: make(map[string]map[string]*v1.Pod, len(ji.Pods)),
 	}
 
 	for key, pods := range ji.Pods {
-		job.Pods[key] = make(map[string]*v1.Pod)
+		job.Pods[key] = make(map[string]*v1.Pod, len(pods))
 		for pn, pod := range pods {
 			job.Pods[key][pn] = pod
 		}
diff --git a/pkg/scheduler/api/job_info.go b/pkg/scheduler/api/job_info.go
index f4b4601aa9..efb0316e96 100644
--- a/pkg/scheduler/api/job_info.go
+++ b/pkg/scheduler/api/job_info.go
@@ -574,7 +574,7 @@ func (ji *JobInfo) Clone() *JobInfo {
 		PodGroup: ji.PodGroup.Clone(),
 
 		TaskStatusIndex:       map[TaskStatus]tasksMap{},
-		TaskMinAvailable:      make(map[TaskID]int32),
+		TaskMinAvailable:      make(map[TaskID]int32, len(ji.TaskMinAvailable)),
 		TaskMinAvailableTotal: ji.TaskMinAvailableTotal,
 		Tasks:                 tasksMap{},
 		Preemptable:           ji.Preemptable,