hurelhuyag commented on issue #25678: [SPARK-28973][SQL] Add `TimeType` and support `java.time.LocalTime` as its external type. URL: https://github.com/apache/spark/pull/25678#issuecomment-557390521 I'm currently using timestamp as time type for create data for rush hour graphic. date part is always epoch (1970-01-01). Because spark don't support TimeType. My point is micros is not important. We can implement it just like timestamp internally. But date part is always epoch. Only requirement is toString() should print only time part (HH:mm:ss.SSS) and mappable to java.sql.Time, java.time.LocalTime. This is enough. Maybe we can use timestamp directly. only printable representation must be only time part.
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