[jira] [Resolved] (ZOOKEEPER-3858) Add metrics to track server unavailable time

["Michael Han (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-3858?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Han resolved ZOOKEEPER-3858.
------------------------------------
    Fix Version/s:     (was: 3.7.0)
                   3.6.3
       Resolution: Fixed

Issue resolved by pull request 1378
[https://github.com/apache/zookeeper/pull/1378]

> Add metrics to track server unavailable time
> --------------------------------------------
>
>                 Key: ZOOKEEPER-3858
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3858
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: metric system
>            Reporter: Jie Huang
>            Priority: Minor
>             Fix For: 3.6.3
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> These metrics track the time when a ZooKeeper server is up and running but not serving client traffic because it is not part of a quorum. They don't track the hardware down time or ZooKeeper process down time.  
> UNAVAILABLE_TIME: time between LOOKING and BROADCAST
> LEADER_UNAVAILABLE_TIME: time between LOOKING and BROADCAST on the leader
>  
>  



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