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From "Chesnay Schepler (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-12423) Add Timer metric type for flink-metrics module
Date Wed, 15 May 2019 06:55:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-12423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16840100#comment-16840100
] 

Chesnay Schepler commented on FLINK-12423:
------------------------------------------

Which of our currently supported metric systems have support for time units?

> Add Timer metric type for flink-metrics module
> ----------------------------------------------
>
>                 Key: FLINK-12423
>                 URL: https://issues.apache.org/jira/browse/FLINK-12423
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Metrics
>            Reporter: Armstrong Nova
>            Assignee: Armstrong Nova
>            Priority: Major
>
> Hi guys, 
>     Currently, Flink only support 4 registering metrics, {{Counters}}, {{Gauges}}, {{Histograms}} and {{Meters}}. 
If we want to measure the time cost metric, for example P75th, P99th, P999th, right now
can only use Histograms metric. But Histograms metric not support TimeUnit type (second, millisecond,
microsecond, nanosecond). So it's not convenient to collaborate with outside metric system. 
>     The Codahale/DropWizard support Time meter, so we can wrap it in Flink. 
>     Flink metrics doc [https://ci.apache.org/projects/flink/flink-docs-master/monitoring/metrics.html]
>      Thanks for your time.



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