[ovirt-users] Not Updating Statistics

All, we are running Ovirt 4.0 on CentOS 7. We have some errors in our dwh log. Look at the following: 2016-08-16 13:28:51|mFKcbP|2EMUyU|snSJCy|OVIRT_ENGINE_DWH|SampleTimeKeepingJob|Default|5|tWarn|tWarn_1|Can not sample data, oVirt Engine is not updating the statistics. Please check your oVirt Engine status.|9704 2016-08-16 19:31:00|dgTmvI|2EMUyU|snSJCy|OVIRT_ENGINE_DWH|SampleTimeKeepingJob|Default|5|tWarn|tWarn_1|Can not sample data, oVirt Engine is not updating the statistics. Please check your oVirt Engine status.|9704 2016-08-16 23:19:28|ByUf8M|2EMUyU|snSJCy|OVIRT_ENGINE_DWH|SampleTimeKeepingJob|Default|5|tWarn|tWarn_1|Can not sample data, oVirt Engine is not updating the statistics. Please check your oVirt Engine status.|9704 2016-08-17 00:27:59|jzRGar|2EMUyU|snSJCy|OVIRT_ENGINE_DWH|SampleTimeKeepingJob|Default|5|tWarn|tWarn_1|Can not sample data, oVirt Engine is not updating the statistics. Please check your oVirt Engine status.|9704 2016-08-17 02:55:01|WZ7M9t|2EMUyU|snSJCy|OVIRT_ENGINE_DWH|SampleTimeKeepingJob|Default|5|tWarn|tWarn_1|Can not sample data, oVirt Engine is not updating the statistics. Please check your oVirt Engine status.|9704 2016-08-17 04:12:06|Q237ie|2EMUyU|snSJCy|OVIRT_ENGINE_DWH|SampleTimeKeepingJob|Default|5|tWarn|tWarn_1|Can not sample data, oVirt Engine is not updating the statistics. Please check your oVirt Engine status.|9704 2016-08-17 04:46:12|8COWHX|2EMUyU|snSJCy|OVIRT_ENGINE_DWH|SampleTimeKeepingJob|Default|5|tWarn|tWarn_1|Can not sample data, oVirt Engine is not updating the statistics. Please check your oVirt Engine status.|9704 What does this mean?