I recently installed CDH 5.5.2 deployed from Parcels by CM and CM5.5.3 (using the .bin install). I run on VMWare Workstation (Windows 10 Pro host) on a large Lenovo P500 Workstation running Xeon 16 cores & 48GiB. I also get the Clock Offset errors in CM fluctuating on and off accross each host. I run ntpd to the uk ntp.pool.org servers (I'm in the UK). When I look at the ntp query results I do seem to get 0 delay across all ntp servers, except occassionally I see one will be wildly out of step, then it will go back to 0. I've seen information on Virtual Machines and iterupt steps causing the virtual clocks to accelerate or decelerate, I've seen issues people seem to have experienced from CM5.4 onwards, where not having the issue at CM5.3, I've seen blogs referring to capacity problems servicing the ntp service with enough CPU cycles (in my case CPU and memory don't seem stretched in the host mointor). I'm wondering where to start - a CM5.4+ issue (5.5.3 in my case), VM/Host interupt isue, a network issue (e.g. from my router over the internet (BT is my ISP), or a CPU/memory resource issue?
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