What happen if in heath check, a backend is ok, soon after health check,
backend will unpluged ( so there is an error backend ).
is there any query will failed ?
No problem.
Health checking is done by a separate process, i.e. pgpool parent. So
even if pgpool children are blocked by
Health check failed because PostgreSQL does not reply
within
health_check_timeout seconds. Please check PostgreSQL log.
If you
don't find anything strange there, probably the cause is
network
physical problem. Maybe switch or hub hardware problem?
Tatsuo Ishii
SRA OSS, Inc. Japan
