Hi everyone, we are evaluating the druid and pinot for one our usecase. just to understand, is the

startTree index

in pinot and

roll-up

in druid are same ? or anything different ?

StarTree is a specialized index that helps you customize level of preaggregation vs storage cost to best serve your needs. This is unique to Pinot and no other system has it.

exactly druid's

roll-up

does the same thing i guess. please correct me if i'm wrong.

roll-up is simple aggregation across all dimensions

Ok @User understood. thanks.