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https://issues.apache.org/jira/browse/HIVE-25403?focusedWorklogId=631462&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-631462
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ASF GitHub Bot logged work on HIVE-25403:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 30/Jul/21 05:26
Start Date: 30/Jul/21 05:26
Worklog Time Spent: 10m
Work Description: warriersruthi opened a new pull request #2550:
URL: https://github.com/apache/hive/pull/2550
The query
SELECT from_unixtime(unix_timestamp(cast('1400-01-01' as date)));
was giving wrong results, because the from_unixtime() function was not
considering leap seconds while representing Timestamp (it was using
java.utils.Date).
The Unix_timestamp() already considered this, so in order to get the correct
results for the above query, it was required to change the epoch time in the
from_unixtime() to ZonedDateTime. The required conversion was done with the
help of the Instant class, which represents a moment given the epoch time.
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Issue Time Tracking
-------------------
Worklog Id: (was: 631462)
Remaining Estimate: 0h
Time Spent: 10m
> from_unixtime() does not consider leap seconds
> -----------------------------------------------
>
> Key: HIVE-25403
> URL: https://issues.apache.org/jira/browse/HIVE-25403
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Sruthi Mooriyathvariam
> Assignee: Sruthi Mooriyathvariam
> Priority: Major
> Fix For: 3.1.2
>
> Attachments: image-2021-07-29-14-42-49-806.png
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The Unix_timestamp() considers "leap second" while the from_unixtime is not;
> which results in to wrong result as below:
> !image-2021-07-29-14-42-49-806.png!
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