Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/22913#discussion_r230544838
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/arrow/ArrowUtils.scala
---
@@ -71,6 +71,7 @@ object ArrowUtils {
case d: ArrowType.Decimal => DecimalType(d.getPrecision, d.getScale)
case date: ArrowType.Date if date.getUnit == DateUnit.DAY => DateType
case ts: ArrowType.Timestamp if ts.getUnit == TimeUnit.MICROSECOND =>
TimestampType
+ case date: ArrowType.Date if date.getUnit == DateUnit.MILLISECOND =>
TimestampType
--- End diff --
Wait .. is it correct to map it to `TimestampType`? Looks this is why
`Date` with `MILLISECOND` is not added.
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