Though we don't require tuples to have any memory alignment based on the
comment in
https://github.com/apache/impala/blob/81d5377c27f1940235db332e43f1d0f073cf3d2f/be/src/runtime/tuple.h#L61-L63
, but I do believe we sort slots to get a packed and aligned memory layout
for the tuples in most cases. CPU operations on aligned addresses are more
efficient than operations on unaligned addresses.
BR,
Zoltan
On Mon, Feb 8, 2021 at 10:12 AM 许益铭 <x1860...@gmail.com> wrote:
> why tuple memory need to be sorted by slot size? is has any optimize?
>
