Is there a reference regarding the number of nodes that can be deployed in the cluster, and are feasible to maintain? From the docs, I gather that "[a]ll DDL/non-stream DML statements are executed in a distributed transaction on all nodes in the cluster and committed via two-phase commit." [1]

Doesn't that get in the way of low latency and availability?

[1] http://enterprise.pipelinedb.com/docs/two-phase.html#two-pha...