[jira] [Commented] (HIVE-12706) Incorrect output from from_utc_timestamp()/to_utc_timestamp when local timezone has DST

["Chaoyu Tang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-12706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15370880#comment-15370880 ] 

Chaoyu Tang commented on HIVE-12706:
------------------------------------

[~jdere] Could you let me know how to reproduce this issue? It seems these functions work as expected with the code without this patch. I am investigating a similar issue HIVE-14161 and wonder if it is related or not. Thanks 

> Incorrect output from from_utc_timestamp()/to_utc_timestamp when local timezone has DST
> ---------------------------------------------------------------------------------------
>
>                 Key: HIVE-12706
>                 URL: https://issues.apache.org/jira/browse/HIVE-12706
>             Project: Hive
>          Issue Type: Bug
>          Components: UDF
>            Reporter: Jason Dere
>            Assignee: Jason Dere
>             Fix For: 2.0.0
>
>         Attachments: HIVE-12706.1.patch
>
>
> Getting wrong output with the local timezone set to PST (which has DST). I don't think this happens when the local timezone does not observe DST.
> {noformat}
> select from_utc_timestamp('2015-03-28 17:00:00', 'Europe/London')
> 2015-03-28 17:00:00
> select from_utc_timestamp('2015-03-28 18:00:00', 'Europe/London')
> 2015-03-28 19:00:00  <= Wrong, should be 2015-03-28 18:00:00
> select from_utc_timestamp('2015-03-28 19:00:00', 'Europe/London')
> 2015-03-28 20:00:00 <= Wrong, should be 2015-03-28 19:00:00
> {noformat}
> Also to_utc_timestamp():
> {noformat}
> select to_utc_timestamp('2015-03-28 17:00:00', 'Europe/London')
> 2015-03-28 17:00:00
> select to_utc_timestamp('2015-03-28 18:00:00', 'Europe/London')
> 2015-03-28 17:00:00 <= Wrong
> select to_utc_timestamp('2015-03-28 19:00:00', 'Europe/London')
> 2015-03-28 18:00:00 <= Wrong
> select to_utc_timestamp('2015-03-28 20:00:00', 'Europe/London')
> 2015-03-28 19:00:00 <= Wrong
> {noformat}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)