[jira] [Updated] (HIVE-12195) Unknown zones should cause an error instead of silently failing

["Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-12195?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez updated HIVE-12195:
-------------------------------------------
    Labels: timestamp  (was: )

> Unknown zones should cause an error instead of silently failing
> ---------------------------------------------------------------
>
>                 Key: HIVE-12195
>                 URL: https://issues.apache.org/jira/browse/HIVE-12195
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Hive
>            Reporter: Ryan Blue
>            Assignee: Shinichi Yamashita
>              Labels: timestamp
>         Attachments: HIVE-12195.1.patch, HIVE-12195.2.patch, HIVE-12195.3.patch, HIVE-12195.4.patch
>
>
> Using an unknown time zone with the {{from_utc_timestamp}} or {{to_utc_timetamp}} methods returns the time un-adjusted instead of throwing an error:
> {code}
> hive> select from_utc_timestamp('2015-04-11 12:24:34.535', 'panda');
> OK
> 2015-04-11 12:24:34.535
> {code}
> This should be an error because users may attempt to adjust to valid but unknown zones, like PDT or MDT. This would produce incorrect results with no warning or error.
> *Update*: A good work-around is to add a table of known zones that maps to offset zone identifiers, like {{GMT-07:00}}. The table is small enough to always be a broadcast join and results can be filtered (e.g. {{offset_zone IS NOT NULL}}) so that only valid zones are passed to {{from_utc_timestamp}}.



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