在Hive里创建表时出现了错误：
FAILED: Execution Error, return code 1 from org.apache.Hadoop.hive.ql.exec.DDLTask. MetaException(message:javax.jdo.JDODataStoreException: An exception was thrown while adding/validating class(es) : Specified key was too long; max key length is 767 bytes
com.MySQL.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Specified key was too long; max key length is 767 bytes
解决的办法是把数据库的Character Set改成latin1：
mysql > alter database hive character set latin1;