diff --git a/weed/filer2/cassandra/cassandra_store.go b/weed/filer2/cassandra/cassandra_store.go
index 1309cd1ee..e8f51dd04 100644
--- a/weed/filer2/cassandra/cassandra_store.go
+++ b/weed/filer2/cassandra/cassandra_store.go
@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/glog"
-	"github.com/gocql/gocql"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/gocql/gocql"
 )
 
 func init() {
diff --git a/weed/filer2/configuration.go b/weed/filer2/configuration.go
index 387672311..510e27ab1 100644
--- a/weed/filer2/configuration.go
+++ b/weed/filer2/configuration.go
@@ -4,7 +4,7 @@ import (
 	"os"
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
-			"github.com/spf13/viper"
+	"github.com/spf13/viper"
 )
 
 const (
diff --git a/weed/filer2/memdb/memdb_store.go b/weed/filer2/memdb/memdb_store.go
index db3a86bd2..062f1cd1c 100644
--- a/weed/filer2/memdb/memdb_store.go
+++ b/weed/filer2/memdb/memdb_store.go
@@ -3,9 +3,9 @@ package memdb
 import (
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
+	"github.com/chrislusf/seaweedfs/weed/util"
 	"github.com/google/btree"
 	"strings"
-	"github.com/chrislusf/seaweedfs/weed/util"
 )
 
 func init() {
diff --git a/weed/filer2/mysql/mysql_store.go b/weed/filer2/mysql/mysql_store.go
index 8adec161f..e18299bd2 100644
--- a/weed/filer2/mysql/mysql_store.go
+++ b/weed/filer2/mysql/mysql_store.go
@@ -6,8 +6,8 @@ import (
 
 	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/filer2/abstract_sql"
-	_ "github.com/go-sql-driver/mysql"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	_ "github.com/go-sql-driver/mysql"
 )
 
 const (
diff --git a/weed/filer2/postgres/postgres_store.go b/weed/filer2/postgres/postgres_store.go
index 8836e2be7..ffd3d1e01 100644
--- a/weed/filer2/postgres/postgres_store.go
+++ b/weed/filer2/postgres/postgres_store.go
@@ -6,8 +6,8 @@ import (
 
 	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/filer2/abstract_sql"
-	_ "github.com/lib/pq"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	_ "github.com/lib/pq"
 )
 
 const (
diff --git a/weed/filer2/redis/redis_cluster_store.go b/weed/filer2/redis/redis_cluster_store.go
index 8a3dce4b8..4f74a8a22 100644
--- a/weed/filer2/redis/redis_cluster_store.go
+++ b/weed/filer2/redis/redis_cluster_store.go
@@ -2,8 +2,8 @@ package redis
 
 import (
 	"github.com/chrislusf/seaweedfs/weed/filer2"
-	"github.com/go-redis/redis"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/go-redis/redis"
 )
 
 func init() {
diff --git a/weed/filer2/redis/redis_store.go b/weed/filer2/redis/redis_store.go
index 77d157ab4..c56fa014c 100644
--- a/weed/filer2/redis/redis_store.go
+++ b/weed/filer2/redis/redis_store.go
@@ -2,8 +2,8 @@ package redis
 
 import (
 	"github.com/chrislusf/seaweedfs/weed/filer2"
-	"github.com/go-redis/redis"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/go-redis/redis"
 )
 
 func init() {
diff --git a/weed/msgqueue/kafka/kafka_queue.go b/weed/msgqueue/kafka/kafka_queue.go
index 7f0273ad9..f373395f4 100644
--- a/weed/msgqueue/kafka/kafka_queue.go
+++ b/weed/msgqueue/kafka/kafka_queue.go
@@ -4,8 +4,8 @@ import (
 	"github.com/Shopify/sarama"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/msgqueue"
-	"github.com/golang/protobuf/proto"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/golang/protobuf/proto"
 )
 
 func init() {
diff --git a/weed/msgqueue/log/log_queue.go b/weed/msgqueue/log/log_queue.go
index 612212ae0..d291d629c 100644
--- a/weed/msgqueue/log/log_queue.go
+++ b/weed/msgqueue/log/log_queue.go
@@ -3,8 +3,8 @@ package kafka
 import (
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/msgqueue"
-	"github.com/golang/protobuf/proto"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/golang/protobuf/proto"
 )
 
 func init() {
diff --git a/weed/msgqueue/message_queue.go b/weed/msgqueue/message_queue.go
index a14d9b480..3e2688698 100644
--- a/weed/msgqueue/message_queue.go
+++ b/weed/msgqueue/message_queue.go
@@ -1,8 +1,8 @@
 package msgqueue
 
 import (
-	"github.com/golang/protobuf/proto"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/golang/protobuf/proto"
 )
 
 type MessageQueue interface {
diff --git a/weed/server/filer_server.go b/weed/server/filer_server.go
index 7a345abe9..4fd167593 100644
--- a/weed/server/filer_server.go
+++ b/weed/server/filer_server.go
@@ -11,11 +11,11 @@ import (
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/postgres"
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/redis"
 	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/msgqueue"
 	_ "github.com/chrislusf/seaweedfs/weed/msgqueue/kafka"
 	_ "github.com/chrislusf/seaweedfs/weed/msgqueue/log"
 	"github.com/chrislusf/seaweedfs/weed/security"
 	"github.com/spf13/viper"
-	"github.com/chrislusf/seaweedfs/weed/msgqueue"
 )
 
 type FilerOption struct {