[DBG]evaluate rescured version
[DBG] debugging..
[DBG]...
[DBG] aaa
[DBG] first debugging version
[BRK]bugfix
[DBG]debugging version
[DBG]ing -> make test to method_add
[DBG]stage commit. debugging unknown error
[DBG]can gao, gaoing
[DBG] debugging errors
[DEV] just for convenient
[DBG] debugging a row = 0 error
[DBG] stage commit
[DBG]stage commit
[DBG] debugging a COlNotExist Error
[DEV] debugging a colNotExist Error
[DEV] I don't know what I have changed
[DBG] debugging wrongly placed metadate problem