[SPARK-29444] Add configuration to support JacksonGenrator to keep fields with null values#26098

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jackylee-ch wants to merge 6 commits intoapache:masterfrom jackylee-ch:json

+43

Commits on Oct 12, 2019

Add configuration to support JacksonGenrator to keep fields with null values
jackylee-ch
committed

Commits on Oct 13, 2019

Commits on Oct 16, 2019

[SPARK-29444] add a suite test for struct inner null
jackylee-ch
committed
[SPARK-29444] change config from structIgnoreNull to ignoreNullFields
jackylee-ch
committed

Commits on Oct 17, 2019

[SPARK-29444] add SQLConf to JSONOptions
jackylee-ch
committed