drill

ddb35ce7 - DRILL-6688 Data batches for Project operator exceed the maximum specified (#1442)

DRILL-6688 Data batches for Project operator exceed the maximum specified (#1442) This change separates the metadata-width and data-width of a variable-width column such that the data-width is used in all intermediate calculations and the meta-data width is added finally when the column's width is accumulated into the total width.