OffHeapColumnVector¶
OffHeapColumnVector
is a concrete WritableColumnVector.
=== [[allocateColumns]] Allocating Column Vectors -- allocateColumns
Static Method
[source, java]¶
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