tree 1f84198b71e2b6218bc3c85610735088799de9e3
parent 7b1b83b4b5ca913687e351730e57217b645e499d
author Paul Rogers <par0328@yahoo.com> 1582311614 -0800
committer Arina Ielchiieva <arina.yelchiyeva@gmail.com> 1583928067 +0200

DRILL-7601: Shift column conversion to reader from scan framework

Allows the column writers to be generic, moves scan-specific
conversions into each reader where needed, implemented in
a reader-specific way.

Adds a revised way of handling projections in the result set
loader that is not coupled with conversion, as the prior
design was.

Updates the CSV, Avro, Log and HDF5 readers.

closes #1993