Hive Delete Table error: Specified key was too long; Max Key LENGTH&NB

I have this error when hive deletes a table, and seeing this error should be known as a character set error. But what do I use? ALTER DATABASE hive character set latin1;  After this command changed it to Latin or not, and then I think it is not the hive is a reload, and then still have the last existence of the hive table structure, such as the existence of MySQL data information, so decisively the MySQL inside the hive database deleted, and then re: CREATE Database Hive;alter database hive Character set latin1; then use hive; View the character set, although it shows Latin as it did last time, but you re-enter Hive,drop table Table_name;ok, But your table structure is gone, so use caution.??. /hive-hiveconf hive.root.logger=debug,console   // restart hive   Use this command to restart hive and manipulate the prompt to see detailed error messages.  April 15, 2016:00:54?

Hive Delete Table error: Specified key was too long; Max Key LENGTH&NB