Richard Nadeau created HIVE-3510:
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Summary: to_utc_timestamp() does not properly handle UNIX
timestamp conversions without nanoseconds
Key: HIVE-3510
URL: https://issues.apache.org/jira/browse/HIVE-3510
Project: Hive
Issue Type: Bug
Components: UDF
Affects Versions: 0.9.0
Environment: Ubuntu LTS 10.04
Reporter: Richard Nadeau
When attempting to convert a UNIX timestamp to UTC the conversion fails if the
input does not include micro or nano seconds:
{code}SELECT
to_utc_timestamp(unix_timestamp('27/Sep/2012:09:53:35','dd/MMM/yyyy:HH:mm:ss'),'America/Denver')
FROM source_table LIMIT 1;{code}
*1970-01-16 14:39:21.215*
"Converting" to a float provides a workaround:
{code}SELECT
to_utc_timestamp(unix_timestamp('27/Sep/2012:09:53:35','dd/MMM/yyyy:HH:mm:ss')
* 1.0,'America/Denver') FROM source_table LIMIT 1;{code}
*2012-09-27 15:53:35.0*
As does "adding" nano seconds:
{code}SELECT
to_utc_timestamp(unix_timestamp('27/Sep/2012:09:53:35','dd/MMM/yyyy:HH:mm:ss')
* 1000,'America/Denver') FROM source_table LIMIT 1;{code}
*2012-09-27 15:53:35.0*
This problem may be at the heart of HIVE-3454 as well.
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