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From "Renkai Ge (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (SPARK-24778) DateTimeUtils.getTimeZone method returns GMT time if timezone cannot be parsed
Date Wed, 13 Feb 2019 11:25:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-24778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16767068#comment-16767068
] 

Renkai Ge edited comment on SPARK-24778 at 2/13/19 11:24 AM:
-------------------------------------------------------------

Since Spark 2.3 dropped support for java versions before Java 8.We can use classes in java.time.*
instead of  relevant ones in java.util.*.


I will to work on this issue since I encountered the same problem in my application.


was (Author: renkaige):
{{Since Spark 2.3 dropped support for java versions before Java 8.We can use classes in java.time.*
instead of }}relevant ones in java.util.*.


I will to work on this issue since I encountered the same problem in my application.

> DateTimeUtils.getTimeZone method returns GMT time if timezone cannot be parsed
> ------------------------------------------------------------------------------
>
>                 Key: SPARK-24778
>                 URL: https://issues.apache.org/jira/browse/SPARK-24778
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.3.1
>            Reporter: Vinitha Reddy Gankidi
>            Priority: Major
>
> {{DateTimeUtils.getTimeZone}} calls java's {{Timezone.getTimezone}} method that defaults
to GMT if the timezone cannot be parsed. This can be misleading for users and its better to
return NULL instead of returning an incorrect value. 
> To reproduce: {{from_utc_timestamp}} is one of the functions that calls {{DateTimeUtils.getTimeZone}}.
Session timezone is GMT for the following queries.
> {code:java}
> SELECT from_utc_timestamp('2018-07-10 12:00:00', 'GMT+05:00') -> 2018-07-10 17:00:00

> SELECT from_utc_timestamp('2018-07-10 12:00:00', '+05:00') -> 2018-07-10 12:00:00
(Defaults to GMT as the timezone is not recognized){code}
> We could fix it by using the workaround mentioned here: [https://bugs.openjdk.java.net/browse/JDK-4412864].



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