Github user HyukjinKwon commented on the pull request:
https://github.com/apache/spark/pull/12495#issuecomment-211845267
First of all, I am sorry that I opened a invalid JIRA about this
[here](https://issues.apache.org/jira/browse/SPARK-14728). I thought it applies
to all classes having `getOrElse(null)` but some of classes do not have
`orNull`.
I am happy to close this if this PR is too minor or there are possible
problems for all.
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