进入Hive元存储数据库，这里为MySQL
修改字段注释字符集
alter table COLUMNS_V2 modify column COMMENT varchar(256) character set utf8;
修改表注释字符集
alter table TABLE_PARAMS modify column PARAM_VALUE varchar(4000) character set utf8;
修改分区表参数，以支持分区键能够用中文表示
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;
修改索引注解
alter table INDEX_PARAMS modify column PARAM_VALUE varchar(4000) character set utf8;