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Posted to issues@ratis.apache.org by "Supratim Deka (Jira)" <ji...@apache.org> on 2019/09/24 14:11:00 UTC

[jira] [Commented] (RATIS-650) Add metrics to track commit index of each peer in a RaftGroup

    [ https://issues.apache.org/jira/browse/RATIS-650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16936837#comment-16936837 ] 

Supratim Deka commented on RATIS-650:
-------------------------------------

[~shashikant] patch 004 : rebased the patch over RATIS-670. As mentioned earlier,
RaftLeaderMetrics.java is a rename of HeartbeatMetrics.java along with modifications.

> Add metrics to track commit index of each peer in a RaftGroup
> -------------------------------------------------------------
>
>                 Key: RATIS-650
>                 URL: https://issues.apache.org/jira/browse/RATIS-650
>             Project: Ratis
>          Issue Type: Sub-task
>          Components: server
>            Reporter: Shashikant Banerjee
>            Assignee: Supratim Deka
>            Priority: Major
>             Fix For: 0.4.0
>
>         Attachments: RATIS-650.000.patch, RATIS-650.002.patch, RATIS-650.003.patch, RATIS-650.004.patch
>
>
> Tracking the RaftLog commit index on each peer in a RaftGroup is useful to monitor the performance of the group.
> Simply as an illustrative example : whenever a specific peer starts to lag behind the majority, the problem becomes visible to the monitoring agent even before the slow follower detection mechanism on the Leader kicks in.
>  



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