[GENERAL] search_path not reloaded via unix socket connections

[Kong Man]

Can anybody explain why the search_path setting, with several config reloads, 
would not change via local connections?  We struggled with our production 
settings on Postgres 9.3 today, only to realize, after a while, that the 
search_path change actually took effect via TCP/IP, but not unix socket, 
connections ever since the first reload.
Thanks,-Kong