hive drop table error analysis

hive> drop table you_20161114;

FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:One or more instances could not be retrieved)

 

When reporting a similar error

 

1: First replace mysql jar with mysql-connector-java-5.1.32-bin.jar

 

Then restart hive

 

2: If the first step is not working, modify the code of mysql

 

 1) First stop the mysql service service mysqld stop

 2) vim /etc/my.cnf

  Add to

 character_set_server=utf8

init_connect='SET NAMES utf8'

 

Just restart mysql hive