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https://issues.apache.org/jira/browse/RATIS-650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16923141#comment-16923141
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Shashikant Banerjee commented on RATIS-650:
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Thanks [~sdeka] for working on this. The patch looks good .
Since, these specific metrics are only collected at leader , would it make
more sense to name it as LeaderMetrics rather than a RaftGroupMetrics?
Also, the below comment needs to be fixed syntactically.
{code:java}
// Normally, leader commit index is always ahead followers.
{code}
> Add metric to track lag between leader and follower in Log commit
> -----------------------------------------------------------------
>
> 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
>
>
> Following metric indicates by how much each follower lags the leader with
> respect to the log commit index.
> |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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