[SPARK-23773][SQL] JacksonGenerator does not include keys that have null value for StructTypes#20884

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makagonov wants to merge 2 commits intoapache:masterfrom makagonov:SPARK-23773

+15-5

Commits on Mar 22, 2018

[SPARK-23773][SQL] JacksonGenerator does not include keys that have null value for StructTypes
Sergey Makagonov
committed

Commits on Mar 23, 2018

fixing broken unit tests
Sergey Makagonov
committed