IPA - named reload takes too long with many zones on RHEL7
Issue
The bind ldap backend re-synchonises / updates all objectclass types idnsConfigObject, idnsZone, idnsForwardZone, idnsRecord, when the logrotate script calls 'rndc reload' as part of 'systemctl reload named'. With a large number of DNS zones configured in IPA, it takes over 45 sec to update ~1000 records. This causes DNS outages.
Environment
Red Hat Enterprise Linux 7.2
bind-9.9.4-29.el7_2.3.x86_64
bind-dyndb-ldap-8.0-1.el7.x86_64
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