3 ms·
Looks great! Quick question: since data is uniformly spread across n leaf nodes, do queries that require checking a number of rows >> n hit nearly every leaf?
by RoboTeddy 13y ago
Looks great!
Quick question: since data is uniformly spread across n leaf nodes, do queries that require checking a number of rows >> n hit nearly every leaf? If so, does this create latency problems when n is large? (since it'd only take one slow request out of n to cause high latency)
- ankrgyl 13y agoYes, we will fan out queries when necessary. In a hard core oltp workload this will affect latency across the system by flooding the network (if you send too many of these queries at once) but we expose knobs that let you limit these queries' parallelism to keep the rest of the system really fast.