3 ms·
afaik impala doesn't have multicore joins while almost any other serious db has. so if it uses 1 core out of 10, 20 to do the join then it might be 10x, 20x slo
by supergirl 12y ago
afaik impala doesn't have multicore joins while almost any other serious db has. so if it uses 1 core out of 10, 20 to do the join then it might be 10x, 20x slower than the best