[pgpool-hackers: 3321] Speeding up failover when all of backends are down

[Tatsuo Ishii]

Currently Pgpool-II tries to find primary node till
search_primary_node_timeout expires even if all of the backend are
down. This is not only a waste of time but it looks like Pgpool-II
hangs because while searching primary node failover process is
suspended and all of the Pgpool-II child process are in defunct state,
thus there's no process which accepts connection requests from
clients.

I think if all of the backnds are down, we could immediately give up
finding primary node regardless search_primary_node_timeout and
promptly finish the failover process. Attached is the patch to
implement that.

Comments?
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp
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