Github user ankurdave commented on the pull request:
https://github.com/apache/spark/pull/1307#issuecomment-63451454
@eranation I'd like to resubmit it at some point, but I'm worried it's too
inefficient at the moment to put into the main distribution. It would be great
to explore any indexing strategies that could avoid the brute force flooding
approach it currently uses.
Still, if you need pattern matching and you have enough memory, it might be
worth trying it as-is.
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