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https://issues.apache.org/jira/browse/ZOOKEEPER-3245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16746924#comment-16746924
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Jie Huang commented on ZOOKEEPER-3245:
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Splitting this Jira into smaller children tasks
> Add useful metrics for ZK pipeline and request/server states
> ------------------------------------------------------------
>
> Key: ZOOKEEPER-3245
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3245
> Project: ZooKeeper
> Issue Type: Improvement
> Reporter: Jie Huang
> Priority: Minor
> Labels: pull-request-available
> Fix For: 3.6.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Add metrics to track time spent in the commit processor, watch counts and
> fire rates, how long a Zookeeper server is unavailable between elections,
> quorum packet size and time spent in the queue, aggregate request
> states/flow, request throttle, sync processor queue time, per-connection read
> and write request counts, commit processor queue sizes(read/write/commit),
> final request processor read/write times, watch manager cnxn/path counts,
> latencies at different points in pipeline for commits/informs, split up
> request type counters for more request types, export sum metrics for all
> AvgMinMax counters, per-connection watch fired counts, ack latency for each
> follower, percentile metrics to zeus latency counters, proposal count, number
> of outstanding changes, snapshot and txns loading time during startup,
> number of non-voting followers, leader unavailable time, etc.
>
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