local exchange (GATHER, SINGLE, [])
    remote exchange (GATHER, SINGLE, [])
        local exchange (GATHER, SINGLE, [])
            remote exchange (REPARTITION, HASH, [expr_13, expr_14])
                final aggregation over (groupid, i_category$gid, i_class$gid)
                    local exchange (REPARTITION, HASH, [groupid, i_category$gid, i_class$gid])
                        remote exchange (REPARTITION, HASH, [groupid, i_category$gid, i_class$gid])
                            partial aggregation over (groupid, i_category$gid, i_class$gid)
                                join (INNER, REPLICATED):
                                    join (INNER, REPLICATED):
                                        join (INNER, REPLICATED):
                                            scan store_sales
                                            local exchange (GATHER, SINGLE, [])
                                                remote exchange (REPLICATE, BROADCAST, [])
                                                    scan store
                                        local exchange (GATHER, SINGLE, [])
                                            remote exchange (REPLICATE, BROADCAST, [])
                                                scan date_dim
                                    local exchange (GATHER, SINGLE, [])
                                        remote exchange (REPLICATE, BROADCAST, [])
                                            scan item
