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From "Aihua Xu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3454) Problem with CAST(BIGINT as TIMESTAMP)
Date Fri, 27 Feb 2015 14:58:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14340221#comment-14340221
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Aihua Xu commented on HIVE-3454:
--------------------------------

I see your points that multiple threads run in single mapper or reducer access that class
and that may cause concurrency issue. I will try to call the initialize() from Mapper and
Reducer's initialization function to make sure it initializes once. And also Driver.compile()
(I will check what would be the good place for the local mode). 

> Problem with CAST(BIGINT as TIMESTAMP)
> --------------------------------------
>
>                 Key: HIVE-3454
>                 URL: https://issues.apache.org/jira/browse/HIVE-3454
>             Project: Hive
>          Issue Type: Bug
>          Components: Types, UDF
>    Affects Versions: 0.8.0, 0.8.1, 0.9.0, 0.10.0, 0.11.0, 0.12.0, 0.13.0, 0.13.1
>            Reporter: Ryan Harris
>            Assignee: Aihua Xu
>              Labels: newbie, newdev, patch
>         Attachments: HIVE-3454.1.patch.txt, HIVE-3454.2.patch, HIVE-3454.3.patch, HIVE-3454.4.patch,
HIVE-3454.patch
>
>
> Ran into an issue while working with timestamp conversion.
> CAST(unix_timestamp() as TIMESTAMP) should create a timestamp for the current time from
the BIGINT returned by unix_timestamp()
> Instead, however, a 1970-01-16 timestamp is returned.



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