Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/3518#issuecomment-70179454
Hey just took a quick pass with some code style suggestions (more coming)
and usability suggestions. One thing, would it be possible to track the name of
the fields you are traversing? This would make the debugging output more
useful. Also, is there a good reason to print the hash code? How would users
use that?
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