Github user cloud-fan commented on the pull request:
https://github.com/apache/spark/pull/7117#issuecomment-117454503
Hi @animeshbaranawal , thanks for fixing this!
Spark SQL should allow any kind of string as column name and that's my bad
that I mistakenly deny empty string when wrote `parseAttributeName`. I have
opened https://github.com/apache/spark/pull/7149 to fix this with less changing
and added test, do you mind have a look?
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