一、登录mysql操作

use hive;

（1）修改表字段注解和表注解

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;

（2）修改分区字段注解

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;

二、修改hive配置文件

<property>
  <name>javax.jdo.option.ConnectionURL</name>
  <value>jdbc:mysql://wyx-bigdata-mysql/hive?createDatabaseIfNotExist=true&useUnicode=true&characterEncoding=UTF-8</value>
</property>

三、重启hive生效