Hello! As far as my understanding goes, H2 planner is sometimes fed constants instead of actual statistics. So that it is able to plan queries for general cases in absense of precise statistics.
Regards, -- Ilya Kasnacheev ср, 27 февр. 2019 г. в 13:13, joseheitor <[email protected]>: > Hi, > > H2 uses a cost-based query optimisation strategy for the query-planner. But > in the case of Ignite, I suspect that this cannot be leveraged because the > client node does not have access to data statistics (distribution, size, > etc) throughout the various client nodes... > > So how is the query plan devised? > > Thanks, > Jose > > > > -- > Sent from: http://apache-ignite-users.70518.x6.nabble.com/ >
