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Alexey Serbin updated KUDU-3048: -------------------------------- Description: For better visibility, it would be great to add metrics reflecting time/clock synchronization parameters: * the maximum of the max_error ever sampled while reading the underlying clock * extrapolating the time: ** the number of intervals when the underlying clock was extrapolated instead of using the actual readings ** the longest interval when when the underlying clock was extrapolated instead of using the actual readings * 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) was: 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) > 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 > Assignee: Alexey Serbin > Priority: Major > Labels: clock > > For better visibility, it would be great to add metrics reflecting time/clock > synchronization parameters: > * the maximum of the max_error ever sampled while reading the underlying clock > * extrapolating the time: > ** the number of intervals when the underlying clock was extrapolated instead > of using the actual readings > ** the longest interval when when the underlying clock was extrapolated > instead of using the actual readings > * 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) -- This message was sent by Atlassian Jira (v8.3.4#803005)