diff --git a/weed/command/filer_replication.go b/weed/command/filer_replication.go
index 4780e9a3b..419ae3174 100644
--- a/weed/command/filer_replication.go
+++ b/weed/command/filer_replication.go
@@ -11,9 +11,9 @@ import (
 	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/filersink"
 	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/gcssink"
 	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/s3sink"
+	"github.com/chrislusf/seaweedfs/weed/replication/sub"
 	"github.com/chrislusf/seaweedfs/weed/server"
 	"github.com/spf13/viper"
-	"github.com/chrislusf/seaweedfs/weed/replication/sub"
 )
 
 func init() {
diff --git a/weed/notification/aws_sqs/aws_sqs_pub.go b/weed/notification/aws_sqs/aws_sqs_pub.go
index ab8d28006..c1af7f27a 100644
--- a/weed/notification/aws_sqs/aws_sqs_pub.go
+++ b/weed/notification/aws_sqs/aws_sqs_pub.go
@@ -1,16 +1,17 @@
 package aws_sqs
 
 import (
+	"fmt"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/sqs"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/notification"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"github.com/golang/protobuf/proto"
-	"github.com/aws/aws-sdk-go/service/sqs"
-	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go/aws/credentials"
-	"github.com/aws/aws-sdk-go/aws/session"
-	"fmt"
-	"github.com/aws/aws-sdk-go/aws/awserr"
 )
 
 func init() {
diff --git a/weed/notification/google_pub_sub/google_pub_sub.go b/weed/notification/google_pub_sub/google_pub_sub.go
index 419fb26a4..7b26bfe38 100644
--- a/weed/notification/google_pub_sub/google_pub_sub.go
+++ b/weed/notification/google_pub_sub/google_pub_sub.go
@@ -1,16 +1,16 @@
 package google_pub_sub
 
 import (
+	"context"
 	"fmt"
 	"os"
 
+	"cloud.google.com/go/pubsub"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/notification"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"github.com/golang/protobuf/proto"
 	"google.golang.org/api/option"
-	"context"
-	"cloud.google.com/go/pubsub"
 )
 
 func init() {
diff --git a/weed/replication/sink/s3sink/s3_sink.go b/weed/replication/sink/s3sink/s3_sink.go
index 50146a57d..3d497d795 100644
--- a/weed/replication/sink/s3sink/s3_sink.go
+++ b/weed/replication/sink/s3sink/s3_sink.go
@@ -10,11 +10,11 @@ import (
 	"github.com/aws/aws-sdk-go/service/s3"
 	"github.com/aws/aws-sdk-go/service/s3/s3iface"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
+	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/replication/sink"
 	"github.com/chrislusf/seaweedfs/weed/replication/source"
 	"github.com/chrislusf/seaweedfs/weed/util"
-	"github.com/chrislusf/seaweedfs/weed/glog"
 )
 
 type S3Sink struct {
diff --git a/weed/replication/sub/notification_aws_sqs.go b/weed/replication/sub/notification_aws_sqs.go
index fe1732e88..f0100f4de 100644
--- a/weed/replication/sub/notification_aws_sqs.go
+++ b/weed/replication/sub/notification_aws_sqs.go
@@ -3,15 +3,15 @@ package sub
 import (
 	"fmt"
 
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/sqs"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"github.com/golang/protobuf/proto"
-	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go/aws/credentials"
-	"github.com/aws/aws-sdk-go/aws/session"
-	"github.com/aws/aws-sdk-go/service/sqs"
-	"github.com/aws/aws-sdk-go/aws/awserr"
 )
 
 func init() {
diff --git a/weed/replication/sub/notification_google_pub_sub.go b/weed/replication/sub/notification_google_pub_sub.go
index 49b0c56de..ad6b42a2e 100644
--- a/weed/replication/sub/notification_google_pub_sub.go
+++ b/weed/replication/sub/notification_google_pub_sub.go
@@ -5,11 +5,11 @@ import (
 	"fmt"
 	"os"
 
+	"cloud.google.com/go/pubsub"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"github.com/golang/protobuf/proto"
-	"cloud.google.com/go/pubsub"
 	"google.golang.org/api/option"
 )
 
diff --git a/weed/server/filer_server.go b/weed/server/filer_server.go
index f4100e5b2..120d07414 100644
--- a/weed/server/filer_server.go
+++ b/weed/server/filer_server.go
@@ -12,9 +12,9 @@ import (
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/redis"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/notification"
-	_ "github.com/chrislusf/seaweedfs/weed/notification/kafka"
 	_ "github.com/chrislusf/seaweedfs/weed/notification/aws_sqs"
 	_ "github.com/chrislusf/seaweedfs/weed/notification/google_pub_sub"
+	_ "github.com/chrislusf/seaweedfs/weed/notification/kafka"
 	_ "github.com/chrislusf/seaweedfs/weed/notification/log"
 	"github.com/chrislusf/seaweedfs/weed/security"
 	"github.com/spf13/viper"