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我配置Hive以使用mysql Metastore。它工作正常。创建Hive表会自动更改mysql Metastore的字符集设置
但是,当我尝试删除表格时,出现如下所示的错误。
FAILED: Error in metadata: javax.jdo.JDODataStoreException: Error(s) were found while auto-creating/validating the datastore for classes. The errors are printed in the log, and are attached to this exception.
NestedThrowables:
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Specified key was too long; max key length is 767 bytes
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask
我做了一些研究,谷歌和official faq告诉我,改变MySQL字符集设置将解决这个问题。
我的MySQL设置如下
mysql> show variables like '%char%';
+--------------------------+----------------------------------------+
| Variable_name | Value |
+--------------------------+----------------------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | /usr/local/mysql/share/mysql/charsets/ |
+--------------------------+----------------------------------------+
8 rows in set (0.02 sec)
我改变了所有的字符集设置从utf8
到latin1
,除了character_set_filesystem
,character_set_system
,character_sets_dir
。
即使这样做,当我尝试删除表格时,仍然会出现相同的错误。 更糟糕的是,每当我创建一个新表时,mysql字符集设置将重置为utf-8
。
任何人都可以帮忙吗?