BUG #3843: archiver process is restarted after the smart shutdown

The following bug has been logged online:

Bug reference:      3843
Logged by:
Email address:      fujii.masao@oss.ntt.co.jp
PostgreSQL version: 8.3beta4
Operating system:   RHEL5
Description:        archiver process is restarted after the smart shutdown
Details:

Is this a bug though archiver process is restarted after the smart
shutdown?
 BTW, the archiver process ends after a few minutes.


 [postgresql.conf]
 archive_mode = on
 archive_command = 'cp %p ../arch/%f'

 $ pg_ctl start
 ...
 $ pgrep -fl postgres
 22781 /home/postgres/bin/postgres
 22783 postgres: writer process
 22784 postgres: wal writer process
 22785 postgres: autovacuum launcher process
 22786 postgres: archiver process
 22787 postgres: stats collector process
 $ pg_ctl stop   (*1)
 ...
 $ pgrep -fl postgres
 23579 postgres: archiver process


 (*1)
 It's easy to reproduce waiting between a few seconds
 for pg_ctl start and stop in this problem.