Re: A couple items on TODO

> AFAIR, elog at NOTICE or DEBUG level isn't really supposed to have any
> side-effects.  The bigger issue is that you have to be careful about
> using it in certain places, mainly during startup or for reporting
> communication errors.  (send failure -> elog -> tries to send message to
> client -> send failure -> elog -> trouble)
> 
> Also, I believe most of the printf's in the backend are in debugging
> support code that's not even compiled by default.  The return on
> investment from converting those routines to use elog is really nil.
> There may be a few remaining printf calls that should be converted to
> elog, but I don't think this is a big issue.

Clearly not a big issue, but something someone can poke around at to get
started.

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