Hi,I note phoenix can runs queries in parallel automatically.But I don't understand this
formula:
-------------------------------t is the target concurrencym is the max concurrencyr is the
number of regions we need to scan
if r >= t scan using regional boundaries else if r/2 > t split each region in
s splits such that: s = max(x) where s * x < m else split each region in s splits such
that: s = max(x) where s * x < t -------------------------------
if there is only one regions to scan and target concurrencyćmax concurrency are default
value.how many parallelization can be excute
Thanks |