4
使用阶2.10.4和火花1.5.1和火花1.6火花SQL不转换时区正确
sqlContext.sql(
"""
|select id,
|to_date(from_utc_timestamp(from_unixtime(at), 'US/Pacific')),
|from_utc_timestamp(from_unixtime(at), 'US/Pacific'),
|from_unixtime(at),
|to_date(from_unixtime(at)),
| at
|from events
| limit 100
""".stripMargin).collect().foreach(println)
火花提交选项: --driver-java-options '-Duser.timezone=US/Pacific'
结果:
[56d2a9573bc4b5c38453eae7,2016-02-28,2016-02-27 16:01:27.0,2016-02-28 08:01:27,2016-02-28,1456646487]
[56d2aa1bfd2460183a571762,2016-02-28,2016-02-27 16:04:43.0,2016-02-28 08:04:43,2016-02-28,1456646683]
[56d2aaa9eb63bbb63456d5b5,2016-02-28,2016-02-27 16:07:05.0,2016-02-28 08:07:05,2016-02-28,1456646825]
[56d2aab15a21fa5f4c4f42a7,2016-02-28,2016-02-27 16:07:13.0,2016-02-28 08:07:13,2016-02-28,1456646833]
[56d2aac8aeeee48b74531af0,2016-02-28,2016-02-27 16:07:36.0,2016-02-28 08:07:36,2016-02-28,1456646856]
[56d2ab1d87fd3f4f72567788,2016-02-28,2016-02-27 16:09:01.0,2016-02-28 08:09:01,2016-02-28,1456646941]
的美国/太平洋时间应为2016-02-28 00:01:27
等,但一些它如何两次减去“8”小时
from_unixtime(at)做什么from_utc_timestamp也会做,它会解析一个Unix时间戳整数(自1970-01-01午夜以来的秒数),并将从UTC解析的时间转换为系统的默认时区。 – user180940