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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4403) (AM/NM/Container)LivelinessMonitor should use monotonic time when calculating period
Date Tue, 08 Dec 2015 15:21:11 GMT

    [ https://issues.apache.org/jira/browse/YARN-4403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15046961#comment-15046961

Sunil G commented on YARN-4403:

Hi [~djp]
Thanks for the updated patch. I have one doubt here, we could see tat {{SystemClock#getTime}}
is *Public* and *Stable*. Now there is a note saying that its advisable to use {{MonotonicClock}},
so any annotation change is needed for {{SystemClock}}?

> (AM/NM/Container)LivelinessMonitor should use monotonic time when calculating period
> ------------------------------------------------------------------------------------
>                 Key: YARN-4403
>                 URL: https://issues.apache.org/jira/browse/YARN-4403
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Junping Du
>            Assignee: Junping Du
>            Priority: Critical
>         Attachments: YARN-4403-v2.patch, YARN-4403.patch
> Currently, (AM/NM/Container)LivelinessMonitor use current system time to calculate a
duration of expire which could be broken by settimeofday. We should use Time.monotonicNow()

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