Comment 2 for bug 1055954

thank you I have already resolved the problem,in the /etc/swift/object-sevice/1-6.conf add [object-expirer]
and in the /etc/swift/ add object-expirer.conf
[DEFAULT]
# swift_dir = /etc/swift
# user = swift
# You can specify default log routing here if you want:
# log_name = swift
# log_facility = LOG_LOCAL0
# log_level = INFO
[object-expirer]
interval = 300
[pipeline:main]
pipeline = catch_errors cache proxy-server
[app:proxy-server]
use = egg:swift#proxy
# See proxy-server.conf-sample for options

[filter:cache]
use = egg:swift#memcache
# See proxy-server.conf-sample for options

[filter:catch_errors]
use = egg:swift#catch_errors
# See proxy-server.conf-sample for options
~