但是，當我嘗試刪除表格時，出現如下所示的錯誤。

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告訴我，改變MySQL字符集設置將解決這個問題。

我的MySQL設置如下

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)

我改變了所有的字符集設置從utf8到latin1，除了character_set_filesystem，character_set_system，character_sets_dir。

即使這樣做，當我嘗試刪除表格時，仍然會出現相同的錯誤。 更糟糕的是，每當我創建一個新表時，mysql字符集設置將重置為utf-8。

任何人都可以幫忙嗎？

2012-10-18

scarcer

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