Metedata updates from all hosts that ever participated in the hosted engine environment are persisted indefinitely. The timestamp is used to distinguish between old and up-to-date data.
The administrator had to notice that the unix timestamp of the report is too old when using hosted-engine --vm-status.
The hosted-engine tool was enhanced to explicitly identify the old metadata record as being too old by changing the state to "unknown stale-data" and showing Status up-to-date: False line.
The administrator can now easily identify old metadata records.