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https://issues.apache.org/jira/browse/FLINK-19876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zlzhang0122 closed FLINK-19876.
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Resolution: Won't Fix
> Latency metrics can merge chain task latency metrics to reduce the number of
> latency metrics
> ---------------------------------------------------------------------------------------------
>
> Key: FLINK-19876
> URL: https://issues.apache.org/jira/browse/FLINK-19876
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Metrics
> Reporter: zlzhang0122
> Priority: Major
>
> In latency metrics report, each operator will report themselves latency
> metics, but actually the communication between chain operators which in one
> task is very fast and the latency can be ignored.So maybe we can merge the
> chain operator latency metrics into one to decrease the number of it.
> For example, if source operator and downstream flat Map operator has been
> chained, now it will report the latency metrics separately, while we can
> merge it and make them report their latency metrics only once.
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