diff --git a/src/jobservice/job/workerpool.go b/src/jobservice/job/workerpool.go
index 082abeef8..910c55f4d 100644
--- a/src/jobservice/job/workerpool.go
+++ b/src/jobservice/job/workerpool.go
@@ -16,6 +16,7 @@ package job
 
 import (
 	"fmt"
+	"sync"
 
 	"github.com/vmware/harbor/src/common/models"
 	"github.com/vmware/harbor/src/common/utils/log"
@@ -33,6 +34,9 @@ type workerPool struct {
 // WorkerPools is a map contains workerpools for different types of jobs.
 var WorkerPools map[Type]*workerPool
 
+// For WorkerPools initialization.
+var once sync.Once
+
 //TODO: remove the hard code?
 const maxScanWorker = 3
 
@@ -118,16 +122,15 @@ func NewWorker(id int, t Type, wp *workerPool) *Worker {
 
 // InitWorkerPools create worker pools for different types of jobs.
 func InitWorkerPools() error {
-	if len(WorkerPools) > 0 {
-		return fmt.Errorf("The WorkerPool map has been initialised")
-	}
 	maxRepWorker, err := config.MaxJobWorkers()
 	if err != nil {
 		return err
 	}
-	WorkerPools = make(map[Type]*workerPool)
-	WorkerPools[ReplicationType] = createWorkerPool(maxRepWorker, ReplicationType)
-	WorkerPools[ScanType] = createWorkerPool(maxScanWorker, ScanType)
+	once.Do(func() {
+		WorkerPools = make(map[Type]*workerPool)
+		WorkerPools[ReplicationType] = createWorkerPool(maxRepWorker, ReplicationType)
+		WorkerPools[ScanType] = createWorkerPool(maxScanWorker, ScanType)
+	})
 	return nil
 }
 
diff --git a/src/jobservice/main.go b/src/jobservice/main.go
index e62a7a0e6..e6e9c1546 100644
--- a/src/jobservice/main.go
+++ b/src/jobservice/main.go
@@ -42,7 +42,9 @@ func main() {
 	}
 
 	initRouters()
-	job.InitWorkerPools()
+	if err := job.InitWorkerPools(); err != nil {
+		log.Fatalf("Failed to initialize worker pools, error: %v", err)
+	}
 	go job.Dispatch()
 	resumeJobs()
 	beego.Run()
@@ -71,6 +73,8 @@ func init() {
 	configPath := os.Getenv("CONFIG_PATH")
 	if len(configPath) != 0 {
 		log.Infof("Config path: %s", configPath)
-		beego.LoadAppConfig("ini", configPath)
+		if err := beego.LoadAppConfig("ini", configPath); err != nil {
+			log.Fatalf("Failed to load config file: %s, error: %v", configPath, err)
+		}
 	}
 }