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From "Paul Guo (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HAWQ-1444) Need to replace gettimeofday() with clock_gettime() for related timeout checking code
Date Thu, 27 Apr 2017 02:31:04 GMT
Paul Guo created HAWQ-1444:
------------------------------

             Summary: Need to replace gettimeofday() with clock_gettime() for related timeout
checking code
                 Key: HAWQ-1444
                 URL: https://issues.apache.org/jira/browse/HAWQ-1444
             Project: Apache HAWQ
          Issue Type: Bug
          Components: Core
            Reporter: Paul Guo
            Assignee: Ed Espino
             Fix For: backlog


gettimeofday() could be affected by ntp kinda things. If using it for timeout logic there
could be wrong, e.g. time goes backwards. We could clock_gettime() with CLOCK_MONOTONIC as
an alternative.

For some platforms/oses that does not have the support for clock_gettime(), we can fall back
to use gettimeofday().

Note getCurrentTime() in code is a good example.




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