hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Aihua Xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-3454) Problem with CAST(BIGINT as TIMESTAMP)
Date Wed, 11 Mar 2015 14:05:39 GMT

     [ https://issues.apache.org/jira/browse/HIVE-3454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aihua Xu updated HIVE-3454:
---------------------------
    Release Note: 
The behaviors of converting from BOOLEAN/TINYINT/SMALLINT/INT/BIGINT and converting from FLOAT/DOUBLE
to TIMESTAMP are inconsistent. The value of a BOOLEAN/TINYINT/SMALLINT/INT/BIGINT is treated
as the time in milliseconds while  the value of a FLOAT/DOUBLE is treated as the time in seconds.
After the change, all the types during the conversion are interpreted in seconds.


  was:
The behaviors of converting from BOOLEAN/TINYINT/SMALLINT/INT/BIGINT and converting from FLOAT/DOUBLE
to TIMESTAMP have been inconsistent. The value of a BOOLEAN/TINYINT/SMALLINT/INT/BIGINT is
treated as the time in milliseconds while  the value of a FLOAT/DOUBLE is treated as the time
in seconds. 

With the change of HIVE-3454, we support an additional configuration "hive.int.timestamp.conversion.in.seconds"
to enable the interpretation the BOOLEAN/BYTE/SHORT/INT/BIGINT value in seconds during the
timestamp conversion without breaking the existing customers. By default, the existing functionality
is kept.


> 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.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.



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

Mime
View raw message