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https://issues.apache.org/jira/browse/SPARK-24778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maxim Gekk resolved SPARK-24778.
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Resolution: Fixed
Fix Version/s: 3.0.0
The issue has been fixed already by using ZoneId.of for parsing time zone ids.
> 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
> Fix For: 3.0.0
>
>
> {{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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