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Posted to yarn-issues@hadoop.apache.org by "Xianyin Xin (JIRA)" <ji...@apache.org> on 2015/09/17 10:20:46 UTC

[jira] [Created] (YARN-4177) yarn.util.Clock should not be used to time a duration or time interval

Xianyin Xin created YARN-4177:
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             Summary: 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


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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