[jira] [Commented] (HIVE-6009) Add from_unixtime UDF that has controllable Timezone

["Scott Eade (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-6009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14991600#comment-14991600 ] 

Scott Eade commented on HIVE-6009:
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I think it would be more than "nice" to support this.  I think it is absolutely required.  Given a unixtime ("number of seconds from unix epoch") there is currently now way that I can see to use this value to get a UTC timestamp.  Sure I could use to_utc_timestamp(timestamp, string timezone), but what value should I use for the timezone parameter?  Most other date functions are running in UTC but this one suddenly takes the system timezone into account.  Not very helpful.

> Add from_unixtime UDF that has controllable Timezone
> ----------------------------------------------------
>
>                 Key: HIVE-6009
>                 URL: https://issues.apache.org/jira/browse/HIVE-6009
>             Project: Hive
>          Issue Type: Improvement
>          Components: CLI
>    Affects Versions: 0.10.0
>         Environment: CDH4.4
>            Reporter: Johndee Burks
>            Priority: Trivial
>
> Currently the from_unixtime UDF takes into a account timezone of the system doing the transformation. I think that implementation is good, but it would be nice to include or change the current UDF to have a configurable timezone. 
> It would be useful for looking at timestamp data from different regions in the native region's timezone. 
> Example: 
> from_unixtime(unix_time, format, timezone)
> from_unixtime(1293840000, dd MMM yyyy, GMT-5)



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