Github user aa8y commented on the pull request:
https://github.com/apache/spark/pull/12587#issuecomment-213983438
@hvanhovell The end use case for both `attempt` and `getOption` is to get
values out of a row object without throwing an exception. However, in one of my
previous PRs, #10247 (which didn't have an `attempt` method), it was pointed
out by @marmbrus that the `getOption` method caught exceptions and converted
them to `None`s. His PoV was that exceptions should not be caught as that hid
important information. But since the whole reason of `getOption` was to *not*
throw exceptions, I introduced the `attempt` method which returns `Success` and
`Failure` objects, which do not lose information and `getOption`, which does
and returns a `Some` or `None`.
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