Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/14389
Yea, for least and greatest, I opened this here
https://github.com/apache/spark/pull/14294. Actually, I am worried if allowing
lose of precision and fractions is okay.
I first thought this should only allow widening within the range that it
does not lose some values but it seems some think it should be just truncated
and Hive does this by always falling back to double.
Please refer https://issues.apache.org/jira/browse/SPARK-16646.
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