Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/15677
@gatorsmile, I guess the changes here are roughly correct and accurate and
make sense. This does not mean "not right" or "wrong".
For example, if users run `describe function extended reverse;` (the one
you pointed out right above)
**Before**
```
Function: reverse
Class: org.apache.spark.sql.catalyst.expressions.StringReverse
Usage: reverse(str) - Returns the reversed given string.
Extended Usage:
> SELECT reverse('Spark SQL');
'LQS krapS'
```
**After**
```
Function: reverse
Class: org.apache.spark.sql.catalyst.expressions.StringReverse
Usage: reverse(str) - Returns the reversed given string.
Extended Usage:
Arguments:
str - a string expression.
Examples:
> SELECT reverse('Spark SQL');
LQS krapS
```
Do you think this is completely incorrect and what users might easily lose
patience at? I guess this is an improvement. Sure, we can improve them more and
make them more correct but I guess this might not be the reason to block this
change.
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