impala注释乱码

+--------------------+--------------+----------------------------------------+ 
| name               | type         | comment                                | 
+--------------------+--------------+----------------------------------------+ 
| id                 | varchar(64)  | ??                                     | 
| channel            | varchar(30)  | ??????                                 | 
| deery_sign         | varchar(64)  | ??????(???)                            | 
| user_bae_id        | varchar(64)  | ????id                                 | 
| id_typ             | varchar(10)  | ???????                                | 
| id_no              | varchar(30)  | ???????                                | 
| cust_nme           | varchar(60)  | ?????                                  | 
| goods_no           | varchar(30)  | ????                                   | 
+--------------------+--------------+----------------------------------------+

use hive; 
alter table COLUMNS_V2 modify column COMMENT varchar(256) character set utf8; 
alter table TABLE_PARAMS modify column PARAM_VALUE varchar(4000) character set utf8; 
alter table PARTITION_PARAMS modify column PARAM_VALUE varchar(4000) character set utf8; 
alter table PARTITION_KEYS modify column PKEY_COMMENT varchar(4000) character set utf8; 
alter table INDEX_PARAMS modify column PARAM_VALUE varchar(4000) character set utf8;