OffHeapColumnVector

OffHeapColumnVector is a concrete WritableColumnVector that…​FIXME

Allocating Column Vectors — allocateColumns Static Method

OffHeapColumnVector[] allocateColumns(int capacity, StructType schema) (1)
OffHeapColumnVector[] allocateColumns(int capacity, StructField[] fields)

  1. Simply converts StructType to StructField[] and calls the other allocateColumns

allocateColumns creates an array of OffHeapColumnVector for every field (to hold capacity number of elements of the data type per field).

Note
 allocateColumns is used when…​FIXME

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