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https://issues.apache.org/jira/browse/HBASE-17205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15710926#comment-15710926
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Guanghao Zhang commented on HBASE-17205:
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Failed ut are related to HBASE-17212.
> Add a metric for the duration of region in transition
> -----------------------------------------------------
>
> Key: HBASE-17205
> URL: https://issues.apache.org/jira/browse/HBASE-17205
> Project: HBase
> Issue Type: Improvement
> Components: Region Assignment
> Affects Versions: 2.0.0, 1.4.0
> Reporter: Guanghao Zhang
> Assignee: Guanghao Zhang
> Priority: Minor
> Attachments: HBASE-17205-branch-1.patch, HBASE-17205-v1.patch,
> HBASE-17205.patch
>
>
> When work for HBASE-17178, I found there are not a metric for the overall
> duration of region in transition. When move a region form A to B, the
> transformation of region state is PENDING_CLOSE => CLOSING => CLOSED =>
> PENDING_OPEN => OPENING => OPENED. When transform old region state to new
> region state, it update the time stamp to current time. So we can't get the
> overall transformation's duration of region in transition. Add a rit duration
> to RegionState for accumulating this metric.
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