[jira] [Commented] (HBASE-24367) ScheduledChore log elapsed timespan in a human-friendly format

["Andrew Kyle Purtell (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-24367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17112516#comment-17112516 ] 

Andrew Kyle Purtell commented on HBASE-24367:
---------------------------------------------

I was annoyed by this yesterday. Taking it up

> ScheduledChore log elapsed timespan in a human-friendly format
> --------------------------------------------------------------
>
>                 Key: HBASE-24367
>                 URL: https://issues.apache.org/jira/browse/HBASE-24367
>             Project: HBase
>          Issue Type: Task
>          Components: master, regionserver
>    Affects Versions: 2.3.0
>            Reporter: Nick Dimiduk
>            Assignee: Andrew Kyle Purtell
>            Priority: Minor
>
> I noticed this in a log line,
> {noformat}
> 2020-04-23 18:31:14,183 INFO org.apache.hadoop.hbase.ScheduledChore: host-a.example.com,16000,1587577999888-ClusterStatusChore average execution time: 68488258 ns.
> {noformat}
> I'm not sure if there's a case when elapsed time in nanoseconds is meaningful for these background chores, but we could do a little work before printing the number and time unit to truncate precision down to something a little more intuitive for operators. This number purports to be an average, so a high level of precision isn't necessarily meaningful.
> Separately, or while we're here, if we think an operator really cares about the performance of this chore, we should print a histogram of elapsed times, rather than an opaque average.



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