[jira] [Commented] (FLINK-4422) Convert all time interval measurements to System.nanoTime()

["Jin Mingjian (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-4422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15871757#comment-15871757 ] 

Jin Mingjian commented on FLINK-4422:
-------------------------------------

This issue could be seen as a low hanging fruit. 

[~tsunny] seems inactive now. I would like to work out a PR as my entry contribution to Flink. 

[~StephanEwen] can you give me the permission of JIRA for Flink and/or assign this bug to me?

> Convert all time interval measurements to System.nanoTime()
> -----------------------------------------------------------
>
>                 Key: FLINK-4422
>                 URL: https://issues.apache.org/jira/browse/FLINK-4422
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Core
>            Reporter: Stephan Ewen
>            Assignee: Sunny T
>            Priority: Minor
>
> In contrast to {{System.currentTimeMillis()}}, {{System.nanoTime()}} is monotonous. To measure delays and time intervals, {{System.nanoTime()}} is hence reliable, while {{System.currentTimeMillis()}} is not.



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