Github user davies commented on the pull request:
https://github.com/apache/spark/pull/8400#issuecomment-134673657
@liancheng Thanks for the comments, but you may made a mistake somewhere, I
got this WITHOUT this PR:
```
scala> TimeZone.setDefault(TimeZone.getTimeZone("GMT"))
scala> val timestamp = Timestamp.valueOf("1970-01-01 00:00:00")
timestamp: java.sql.Timestamp = 1970-01-01 00:00:00.0
scala> val (sparkJulianDay, sparkTimeOfDayNanos) =
|
DateTimeUtils.toJulianDay(DateTimeUtils.fromJavaTimestamp(timestamp))
sparkJulianDay: Int = 2440587
sparkTimeOfDayNanos: Long = 43200000000000
scala> println(
| s"""Spark converts "$timestamp" to Julian timestamp:
| |(julianDay=$sparkJulianDay,
timeOfDayNanos=$sparkTimeOfDayNanos)
| """.stripMargin)
Spark converts "1970-01-01 00:00:00.0" to Julian timestamp:
(julianDay=2440587, timeOfDayNanos=43200000000000)
```
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