Github user cloud-fan commented on the pull request:
https://github.com/apache/spark/pull/7353#issuecomment-120593192
This was by intentional as hive doesn't support it. However, our new design
about [date
time](https://issues.apache.org/jira/secure/attachment/12743900/SparkSQLdatetimeudfs%20%281%29.pdf)
says we should support cast string `yyyyÂ-mmÂ-dd *` to date, which means
your case should be supported.
It would be better if you can fix the string to date cast completely, i.e.
including all the formats defined in the design doc :)
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