[KUDU-2705] /scans should show more useful time metrics

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.9.0
• Fix Version/s: 1.10.0
• Component/s: supportability, ui
• Labels: newbie
• Assignee: William Berkeley
• Reporter: Adar Dembo
• Created: 20/Feb/19 22:40
• Updated: 06/Jun/19 14:13
• Resolved: 06/Jun/19 14:13

Description

Currently /scans shows the monotonic time since a scan started as well as its "duration", which is the total amount of wall time for which a scanner was live.

We should also publish other useful time metrics, like:

• cumulative CPU time
• cumulative I/O time
• a second wall time, including all time spent by the tserver servicing a scan (maybe that's just a sum of CPU and I/O time above?)