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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18520) Add jmx value to determine true Master Start time
Date Tue, 08 Aug 2017 08:09:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16118016#comment-16118016
] 

stack commented on HBASE-18520:
-------------------------------

So, it looks like this patch was backported to branch-2 and branch-1 but not branch-1.4. I
was confused because no note was left in here saying what branches had been picked too which
is our usual practice. I did a bunch of mess trying to cherry-pick. I think its fixed now;
i.e. backported back to 1.4.

> 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: Improvement
>          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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