[elephant-devel] gp-export strikes back

[Ian Eslick]

> I have an idea: we could have a second elephant database used only for
> reference tracking. It does not have to have the same backend,
> bdb will probably be the best choice at all time. This should be easy
> to implement and avoid the problem completely?
> Make we can make its use an option, after all if a hashtable works for
> you there should be no need to configure a "backup-helper-db".
> 

Migration already supports the 'DB as object pointer' strategy for very large migrations for the same reason.  I think it's an easy and totally reasonable approach.