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https://issues.apache.org/jira/browse/HIVE-21611?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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bd2019us updated HIVE-21611:
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Attachment: 1.patch
> 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
> Priority: Major
> Labels: pull-request-available
> Attachments: 1.patch
>
> Time Spent: 10m
> 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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