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Wenchen Fan reassigned SPARK-31237: ----------------------------------- Assignee: Maxim Gekk > Replace 3-letter time zones by zone offsets > ------------------------------------------- > > Key: SPARK-31237 > URL: https://issues.apache.org/jira/browse/SPARK-31237 > Project: Spark > Issue Type: Test > Components: SQL > Affects Versions: 3.0.0 > Reporter: Maxim Gekk > Assignee: Maxim Gekk > Priority: Major > > 3-letter time zones are ambitious, and have been already deprecated in JDK, > see [https://docs.oracle.com/javase/8/docs/api/java/util/TimeZone.html] . > Also, some short names are mapped to region-based zone IDs, and don't conform > to actual definitions. For example, the PST short name is mapped to > America/Los_Angeles. It has different zone offsets in Java 7 and Java 8 APIs: > {code:scala} > scala> TimeZone.getTimeZone("PST").getOffset(Timestamp.valueOf("2016-11-05 > 23:00:00").getTime)/3600000.0 > res11: Double = -7.0 > scala> TimeZone.getTimeZone("PST").getOffset(Timestamp.valueOf("2016-11-06 > 00:00:00").getTime)/3600000.0 > res12: Double = -7.0 > scala> TimeZone.getTimeZone("PST").getOffset(Timestamp.valueOf("2016-11-06 > 01:00:00").getTime)/3600000.0 > res13: Double = -8.0 > scala> TimeZone.getTimeZone("PST").getOffset(Timestamp.valueOf("2016-11-06 > 02:00:00").getTime)/3600000.0 > res14: Double = -8.0 > scala> TimeZone.getTimeZone("PST").getOffset(Timestamp.valueOf("2016-11-06 > 03:00:00").getTime)/3600000.0 > res15: Double = -8.0 > {code} > and in Java 8 API > https://github.com/apache/spark/pull/27980#discussion_r396287278 > By definition, PST must be a constant and equals to UTC-08:00, see > https://www.timeanddate.com/time/zones/pst > The ticket aims to replace all short time zone names by zone offsets in tests. > -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org