diff --git a/docker/postgres/docker-entrypoint-initdb/init.sql b/docker/postgres/docker-entrypoint-initdb/init.sql
index b48ddde042..b26520e29c 100755
--- a/docker/postgres/docker-entrypoint-initdb/init.sql
+++ b/docker/postgres/docker-entrypoint-initdb/init.sql
@@ -234,7 +234,7 @@ CREATE TABLE t_ds_command (
   dependence varchar(255) DEFAULT NULL ,
   update_time timestamp DEFAULT NULL ,
   process_instance_priority int DEFAULT NULL ,
-  worker_group_id int DEFAULT '-1' ,
+  worker_group varchar(64),
   PRIMARY KEY (id)
 ) ;
 
@@ -275,7 +275,7 @@ CREATE TABLE t_ds_error_command (
   update_time timestamp DEFAULT NULL ,
   dependence text ,
   process_instance_priority int DEFAULT NULL ,
-  worker_group_id int DEFAULT '-1' ,
+  worker_group varchar(64),
   message text ,
   PRIMARY KEY (id)
 );
@@ -748,7 +748,7 @@ CREATE SEQUENCE  t_ds_worker_server_id_sequence;
 ALTER TABLE t_ds_worker_server ALTER COLUMN id SET DEFAULT NEXTVAL('t_ds_worker_server_id_sequence');
 
 
--- Records of t_ds_user，user : admin , password : dolphinscheduler123
+-- Records of t_ds_user?user : admin , password : dolphinscheduler123
 INSERT INTO t_ds_user(user_name,user_password,user_type,email,phone,tenant_id,create_time,update_time) VALUES ('admin', '7ad2410b2f4c074479a8937a28a22b8f', '0', 'xxx@qq.com', 'xx', '0', '2018-03-27 15:48:50', '2018-10-24 17:40:22');
 
 -- Records of t_ds_alertgroup，dolphinscheduler warning group
diff --git a/dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/entity/ErrorCommand.java b/dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/entity/ErrorCommand.java
index 7f3eb38760..127c5b7322 100644
--- a/dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/entity/ErrorCommand.java
+++ b/dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/entity/ErrorCommand.java
@@ -101,9 +101,9 @@ public class ErrorCommand {
     private String message;
 
     /**
-     * worker group id
+     * worker group
      */
-    private int workerGroupId;
+    private String workerGroup;
 
     public ErrorCommand(){}
 
@@ -257,17 +257,25 @@ public class ErrorCommand {
         this.updateTime = updateTime;
     }
 
-    public int getWorkerGroupId() {
-        return workerGroupId;
+    public String getWorkerGroup() {
+        return workerGroup;
     }
 
-    public void setWorkerGroupId(int workerGroupId) {
-        this.workerGroupId = workerGroupId;
+    public void setWorkerGroup(String workerGroup) {
+        this.workerGroup = workerGroup;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
     }
 
     @Override
     public String toString() {
-        return "Command{" +
+        return "ErrorCommand{" +
                 "id=" + id +
                 ", commandType=" + commandType +
                 ", processDefinitionId=" + processDefinitionId +
@@ -281,17 +289,8 @@ public class ErrorCommand {
                 ", startTime=" + startTime +
                 ", processInstancePriority=" + processInstancePriority +
                 ", updateTime=" + updateTime +
-                ", message=" + message +
+                ", message='" + message + '\'' +
+                ", workerGroup='" + workerGroup + '\'' +
                 '}';
     }
-
-    public String getMessage() {
-        return message;
-    }
-
-    public void setMessage(String message) {
-        this.message = message;
-    }
-
-
 }