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From "Xianyin Xin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-4177) yarn.util.Clock should not be used to time a duration or time interval
Date Fri, 18 Sep 2015 09:55:04 GMT

     [ https://issues.apache.org/jira/browse/YARN-4177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xianyin Xin updated YARN-4177:
------------------------------
    Attachment: YARN-4177.002.patch

Upload patch ver2.

> yarn.util.Clock should not be used to time a duration or time interval
> ----------------------------------------------------------------------
>
>                 Key: YARN-4177
>                 URL: https://issues.apache.org/jira/browse/YARN-4177
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Xianyin Xin
>         Attachments: YARN-4177.001.patch, YARN-4177.002.patch
>
>
> There're many places uses Clock to time intervals, which is dangerous as commented by
[~stevel@apache.org] in HADOOP-12409. Instead, we should use hadoop.util.Timer#monotonicNow()
to get monotonic time. Or we could provide a MonotonicClock in yarn.util considering the consistency
of code.



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