在Windows上使用Sonar和MySQL 5.6的架构设置失败

Question

我在Windows机器上安装了Sonar 3.4.1和Mysql 5.6.10。

我已经创建了一个mysql模式“声纳”，并授予它对用户“声纳”的所有权限。我已配置声纳使用此用户。我按照the codehaus sonar page上的说明执行此操作。

当启动声纳时，它开始在模式中创建表格。在某些时候出现错误，指出“指定的密钥太长;最大密钥长度是767字节”（最后是完整的错误信息）。

根据this question索引长度限制在mysql中。因为这是有记录的，我预计Sonar不会创建超过极限的索引。显然它试图这样做。

我有没有想过一些重要的配置，或者是sonar和mysql的两个版本incompatbile？我能做些什么来使它们适用于这些版本？

完整的错误消息：

 
INFO | jvm 1 | 2013/02/11 11:28:25 | 
INFO | jvm 1 | 2013/02/11 11:28:25 | == CreateProperties: migrating =============================================== 
INFO | jvm 1 | 2013/02/11 11:28:25 | -- create_table("properties") 
INFO | jvm 1 | 2013/02/11 11:28:25 | -> 0.0320s 
INFO | jvm 1 | 2013/02/11 11:28:25 | -> 0 rows 
INFO | jvm 1 | 2013/02/11 11:28:25 | -- add_index(:properties, :prop_key, {:name=>"properties_key"}) 
2013.02.11 11:28:25 ERROR jruby.rack unable to create shared application instance 
org.jruby.rack.RackInitializationException: An error has occurred, all later migrations canceled: 

ActiveRecord::JDBCError: Specified key was too long; max key length is 767 bytes: CREATE INDEX `properties_key` ON `properties` (`prop_key`) 
    from D:/Programs/sonar-3.4.1/war/sonar-server/WEB-INF/gems/gems/activerecord-jdbc-adapter-1.1.3/lib/arjdbc/jdbc/adapter.rb:183:in `execute' 
[stacktrace omitted] 
org.jruby.exceptions.RaiseException: (StandardError) An error has occurred, all later migrations canceled: 

ActiveRecord::JDBCError: Specified key was too long; max key length is 767 bytes: CREATE INDEX `properties_key` ON `properties` (`prop_key`) 
2013.02.11 11:28:25 ERROR jruby.rack Error: application initialization failed 
org.jruby.rack.RackInitializationException: An error has occurred, all later migrations canceled: 

ActiveRecord::JDBCError: Specified key was too long; max key length is 767 bytes: CREATE INDEX `properties_key` ON `properties` (`prop_key`) 
    from D:/Programs/sonar-3.4.1/war/sonar-server/WEB-INF/gems/gems/activerecord-jdbc-adapter-1.1.3/lib/arjdbc/jdbc/adapter.rb:183:in `execute' 
[stacktrace omitted] 
org.jruby.exceptions.RaiseException: (StandardError) An error has occurred, all later migrations canceled: 

ActiveRecord::JDBCError: Specified key was too long; max key length is 767 bytes: CREATE INDEX `properties_key` ON `properties` (`prop_key`) 
INFO | jvm 1 | 2013/02/11 11:28:25 | 2013-02-11 11:28:25.421:INFO::Started SelectChannelConnector@0.0.0.0:9000 

Answer 1

你是对的，有些指标与长度超过最大限值时创建的。问题在于MySQL 5.6不会以静默方式截断索引。这种行为似乎没有预料到（见http://dev.mysql.com/doc/refman/5.6/en/innodb-restrictions.html和错误http://bugs.mysql.com/bug.php?id=68453）。

Sonar 3.5通过创建正确长度的索引来解决此问题（请参阅http://jira.codehaus.org/browse/SONAR-4137）。