[jira] [Assigned] (RATIS-650) Add metrics related to leader and follower commits

["Supratim Deka (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/RATIS-650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Supratim Deka reassigned RATIS-650:
-----------------------------------

    Assignee: Supratim Deka  (was: Shashikant Banerjee)

> Add metrics related to leader and follower commits
> --------------------------------------------------
>
>                 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
>
>
> Following metrics would be useful for measuring how each server is performing with respect to the incoming load as well as with respect to its peers in terms of discrepancies with respect to the commit indices.
> |appliedIndexToCommitIndexDiff|The difference between lastApplied Index and log commit Index on each of Ratis server. This will give an indication of how the stateMachine is behaving with respect to the incoming load.|
> |raftServerCommitIndexDiff|difference between the next commitIndex between a leader and each of its peer. This will give an idea at what of point of time a follower lags/catches up with respect to leader|
>  



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