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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (HIVE-21611) Date.getTime() can be changed to System.currentTimeMillis()
Date Thu, 01 Oct 2020 00:53:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-21611?focusedWorklogId=493250&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-493250
]

ASF GitHub Bot logged work on HIVE-21611:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 01/Oct/20 00:52
            Start Date: 01/Oct/20 00:52
    Worklog Time Spent: 10m 
      Work Description: github-actions[bot] commented on pull request #1334:
URL: https://github.com/apache/hive/pull/1334#issuecomment-701722885


   This pull request has been automatically marked as stale because it has not had recent
activity. It will be closed if no further activity occurs.
   Feel free to reach out on the dev@hive.apache.org list if the patch is in need of reviews.


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 493250)
    Time Spent: 2h  (was: 1h 50m)

> Date.getTime() can be changed to System.currentTimeMillis()
> -----------------------------------------------------------
>
>                 Key: HIVE-21611
>                 URL: https://issues.apache.org/jira/browse/HIVE-21611
>             Project: Hive
>          Issue Type: Bug
>            Reporter: bd2019us
>            Assignee: Hunter Logan
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: 1.patch
>
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> Hello,
> I found that System.currentTimeMillis() can be used here instead of new Date.getTime().
> Since new Date() is a thin wrapper of light method System.currentTimeMillis(). The performance
will be greatly damaged if it is invoked too much times.
> According to my local testing at the same environment, System.currentTimeMillis() can
achieve a speedup to 5 times (435 ms vs 2073 ms), when these two methods are invoked 5,000,000
times.



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