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https://issues.apache.org/jira/browse/HBASE-27380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17883037#comment-17883037
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Nick Dimiduk commented on HBASE-27380:
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Okay, when to update this metric is not obvious to me. The `RegionStates` class
has a `regionInTransition` Map, which is updated via delegation to
`RegionStateNodes`. I don't think it's sufficient to update the metric upon
removal from this map, because it appears that entries come and go from this
map as responsibility is passed across procedures.
> RitDuration histogram metric is broken
> --------------------------------------
>
> Key: HBASE-27380
> URL: https://issues.apache.org/jira/browse/HBASE-27380
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.5.0, 2.6.0, 3.0.0-beta-1, 4.0.0-alpha-1
> Reporter: Bryan Beaudreault
> Priority: Minor
>
> Looks like the method which updates it in MetricsAssignmentManager,
> updateRitDuration, got broken somewhere along the way. It's no longer used.
> We should wire this back up.
> https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MetricsAssignmentManager.java#L82
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