[HACKERS] localhost redux

[Gavin M. Roy]

I've been having a problem with the pgstat.c localhost change since 7.4, 
in that statistics gathering stopped working on my gentoo boxes.  I've 
not traced it back beyond getaddrinfo called in getaddrinfo_all, and 
decided the quick fix was to go back and change pgstat to use 127.0.0.1 
instead of localhost.

I don't know if the problem is isolated to just me, but I wanted to 
suggest that we use a parameter for that, which can be configured in the 
postgresql.conf, with a default value if it's not set, set to 
localhost.  I'd be happy to write a patch that follows this behavior but 
wanted to see if everyone agrees with that line of thinking before doing so.

Gavin

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