Github user tarekauel commented on the pull request:
https://github.com/apache/spark/pull/7353#issuecomment-120637117
Okay, yes I'm going to extend it. What Hive does support is parsing the
minute from `13:20:08`. Our minute method requires a TimeStamp. Either we don't
support the `minute` expression on pure time information or we define a cast
from a time string to timestamp. But even if we do that, we are still not
compatible with Hive. Because we would parse a pure date like `2015-10-20` to
`2015-10-20 00:00:00` and we could extract the minute `0`, Hive would return
`null`
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