My understanding is that lazy loading doesn't work with group_by. On Tue, Sep 18, 2018 at 10:11 AM Mikhail <[email protected]> wrote:
> Hi Eugene, > > >For #2: wouldn't H2 need to bring the data into the heap to make the > queries? > > Or at least some of the date to do the group_by and sum operation? > > yes, ignite will bring data from off-heap to heap, sometimes if data set is > too big for heap memory you need to set lazy flag for your query: > > https://apacheignite-sql.readme.io/docs/performance-and-debugging#result-set-lazy-load > > Thanks, > Mike. > > > > -- > Sent from: http://apache-ignite-users.70518.x6.nabble.com/ >
