[SQL][MINOR] Fix compiling for scala 2.12#22260

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da-liii wants to merge 4 commits intoapache:masterfrom

da-liii:fix_exhaustive_match

Commits on Aug 29, 2018

Fix exhaustive match using collect
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scala.util.Properties is more general
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Commits on Aug 30, 2018

same semantics with an IllegalStateException
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fix
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