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From "Zach York (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18520) Add jmx value to determine true Master Start time
Date Mon, 07 Aug 2017 18:02:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16116951#comment-16116951
] 

Zach York commented on HBASE-18520:
-----------------------------------

[~tedyu] Any chance we can get this on branch-2 and branch-1.4? Ideally I would also like
it on branch-1.3. Do you need me to submit patches for those? They should cleanly apply (I
think).

We really need to have a discussion on all this branching...

> Add jmx value to determine true Master Start time
> -------------------------------------------------
>
>                 Key: HBASE-18520
>                 URL: https://issues.apache.org/jira/browse/HBASE-18520
>             Project: HBase
>          Issue Type: Bug
>          Components: metrics
>            Reporter: Zach York
>            Assignee: Zach York
>            Priority: Minor
>             Fix For: 3.0.0, 1.4.0, 2.0.0-alpha-2
>
>         Attachments: HBASE-18520.branch-1.001.patch, HBASE-18520.branch-1.002.patch,
HBASE-18520.master.001.patch, HBASE-18520.master.002.patch, HBASE-18520.master.003.patch
>
>
> The masterActiveTime is being set before regions are assigned. This patch adds a new
jmx metric to expose the final time when the master has become the active master (All regions
are assigned, etc.).



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