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https://issues.apache.org/jira/browse/HADOOP-14713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16172672#comment-16172672
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Chetna Chaudhari commented on HADOOP-14713:
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[~jlowe], [~templedf]: I created few sub-tasks for classes which needs this
change. Also, I noticed that, change needs to be done in many test cases.
Should I create sub-task per test, or a generic task covering all test cases
will be ok? Please advice.
> Audit for durations that should be measured via Time.monotonicNow
> -----------------------------------------------------------------
>
> Key: HADOOP-14713
> URL: https://issues.apache.org/jira/browse/HADOOP-14713
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Jason Lowe
> Labels: newbie
>
> Whenever we are measuring a time delta or duration in the same process, the
> timestamps probably should be using Time.monotonicNow rather than Time.now or
> System.currentTimeMillis. The latter two are directly reading the system
> clock which can move faster or slower than actual time if the system is
> undergoing a time adjustment (e.g.: adjtime or admin sets a new system time).
> We should go through the code base and identify places where the code is
> using the system clock but really should be using monotonic time.
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