why will nginx's map directive eat all ram?

[Payne Chu]

Finally I can reproduce even in the Homebrew version. It will only leak when
I use relative path. and all version also can reproduce. b4 I test Homebrew
version with full path not relative path that's the different....XD~

map $pid $public_root { default public; }     <-- this one relative path
leak happened
map $pid $public_root { default /usr/local/Cellar/nginx/1.4.1/public; } <-
this one full path without leak..

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,241478,241503#msg-241503