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https://issues.apache.org/jira/browse/HBASE-4348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13232468#comment-13232468
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Himanshu Vashishtha commented on HBASE-4348:
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Thanks for the review Jon. I incorporated your suggestions, and have tested
this new patch on a 5 node cluster and randomly killing regions servers to
bring some regions in transition, and noting the change in metrics. I wonder
how the metrics for RIT can be tested by some simple unit tests.
Attached is the new UI for region in transition section on the master UI. I
will upload a review request on the board soon.
> Add metrics for regions in transition
> -------------------------------------
>
> Key: HBASE-4348
> URL: https://issues.apache.org/jira/browse/HBASE-4348
> Project: HBase
> Issue Type: Improvement
> Components: metrics
> Affects Versions: 0.92.0
> Reporter: Todd Lipcon
> Assignee: Himanshu Vashishtha
> Priority: Minor
> Labels: noob
> Attachments: 4348-metrics-v3.patch, 4348-v1.patch, 4348-v2.patch,
> RITs.png, metrics-v2.patch
>
>
> The following metrics would be useful for monitoring the master:
> - the number of regions in transition
> - the number of regions in transition that have been in transition for more
> than a minute
> - how many seconds has the oldest region-in-transition been in transition
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