Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/10205#issuecomment-206041420
`CHECKPOINT_LOCATION` was a weird one; because it didn't have a default
value before my changes, and this was the best way I found to map it.
There's a new method in `SQLConf` to handle it:
def getConf[T](entry: OptionalConfigEntry[T]): T
That should have the same behavior as the previous one for optional
configs; meaning, if they're not set in the configuration, you'll get a
`NoSuchElementException`. I'm not sure how you were not getting the exception
before, since there was no default value.
Also, because of that method, the return value of
`getConf(CHECKPOINT_LOCATION)` would be `String` and not `Option[String]`,
which is probably why intellij is complaining.
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