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DRILL-5970: DrillParquetReader always builds the schema with "OPTIONA…

Open vdiravka opened this issue 7 years ago • 1 comments

…L" dataMode columns instead of "REQUIRED" ones

  • Added supporting of specifying the DataMode of data type in MapWriter;
  • Use nullable vectors in case of parent nested data type with OPTIONAL repetition.

vdiravka avatar Nov 22 '17 17:11 vdiravka

@sachouche can you please review this?

priteshm avatar Nov 27 '17 18:11 priteshm