The following query shows which fallback AMPs contain the rows of a table.
sel col1, hashbakamp(hashbucket(hashrow(col1)) map = map1count3 colocate using u1_tabm1c3) (named "which amp?") from u1.tabm1c3 order by 1;
Result:
col1 which amp? ----------- ----------- 0 2 1 3 2 2 3 3 4 3 5 3 6 2 7 3 8 2 9 0