HyukjinKwon commented on code in PR #39239:
URL: https://github.com/apache/spark/pull/39239#discussion_r1058142903
##########
python/pyspark/sql/types.py:
##########
@@ -276,7 +276,15 @@ def toInternal(self, dt: datetime.datetime) -> int:
def fromInternal(self, ts: int) -> datetime.datetime:
if ts is not None:
# using int to avoid precision loss in float
- return datetime.datetime.fromtimestamp(ts //
1000000).replace(microsecond=ts % 1000000)
+ return (
+ datetime.datetime
+ # Set the time zone to UTC because the TIMESTAMP type stores
timestamps
+ # as the number of microseconds from the epoch of
1970-01-01T00:00:00.000000Z
+ # in the UTC time zone.
+ .fromtimestamp(ts // 1000000,
tz=datetime.timezone.utc).replace(
Review Comment:
Hmmm ... I believe this isn't technically correct ... it was a naive
datetime that is a local time when it's collected before. Now they are
datetimes are in UTC.
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