When I was installing RH6.0 (on a x86) on a machine with 32 RAM and no swap partitions selected in installation process, choosing 'Install Everything' (at least) fails while 'finding overlapping files' (don't remember how it looks like - may be just hangs). When I engage swap partition and try do the same thing, everything is successful. May be installer should warn user that at least (say) 48 Mb of virtual memory should be availble.
The only way you can install without any swap space is via expert mode.
Currently the installer does not allow the process to continue past disk druid or fdisk if there isnt at least one swap partition created. You can although run the installer in expert mode which allows the bypassing of this limitation (it throws up warning message) but is only recommended if you have plenty of ram.
sssd-1.16.2-4.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-5793dadb1d
sssd-1.16.2-4.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-5793dadb1d
sssd-1.16.2-4.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.