Github user liancheng commented on the pull request:
https://github.com/apache/spark/pull/11798#issuecomment-198198220
@JoshRosen It seems that tuning `scalac.patmat.analysisBudget` doesn't work
for this case. According to [Scala compiler code][1],
`-Dscalac.patmat.analysisBudget=off` is equivalent to setting this option to
`Integer.MAX_VALUE`, but this error is still there. I think we should merge
this case-expansion fix first to bring master SBT build back.
@yy2016 I'm merging this to master, will update the commit message while
merging. Thanks for the fix!
[1]:
https://github.com/scala/scala/blob/v2.10.5/src/compiler/scala/tools/nsc/transform/patmat/Logic.scala#L166
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