Alexey Serbin created KUDU-3048:
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Summary: Add time/clock synchronization metrics
Key: KUDU-3048
URL: https://issues.apache.org/jira/browse/KUDU-3048
Project: Kudu
Issue Type: Improvement
Components: clock, master, tserver
Reporter: Alexey Serbin
For better visibility, it would be great to add metrics reflecting time/clock
synchronization parameters:
* maximum clock error
* extrapolating the time:
** the number of times when {{clock::TimeService::WalltimeWithError()}}
returned an error, so it was necessary to extrapolate the clock readings
** the timestamp of the last occurrence of the event above
* if using the {{built-in}} time source:
** the number of servers used for the true time tracking (good references)
** the number of servers not used for the true time tracking (bad references)
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