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From "Guanghao Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17205) Add a metric for the duration of region in transition
Date Fri, 02 Dec 2016 00:57:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15713594#comment-15713594
] 

Guanghao Zhang commented on HBASE-17205:
----------------------------------------

Thanks [~mbertozzi] for reviewing.

> 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
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: HBASE-17205-branch-1.patch, HBASE-17205-v1.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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