Github user NarineK commented on the issue:
https://github.com/apache/spark/pull/10162
I'd propose to have:
1. One input argument: suffixes[left, right] (if you want we can have 2
similar to pandas).
2. Default values for suffixes (I think defaults are more convenient but we
can do it like in pandas and make it required )
3. The logic can be implemented like in pandas: we will add suffixes
regardless if the columns are in join condition or not
4. We can have a separate method for join with suffixes and set new column
names after join has happened and do not touch existing join functions ...
What do you think @marmbrus, @holdenk
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