Data volume limitation with fragment Size

compute size of fragment during fragmentation
use fragment size in engine to block working when volume more than technical limit or credits

Start by locating the fragmentation and engine entry points involved in processing fragment Size. Determine how fragment volume can be computed during fragmentation and where technical-limit or credit checks belong. Done means oversized work is blocked using the computed fragment size and the relevant limits.

Written by the indexing model from the issue text.