Module mz_transform::fusion
source · [−]Expand description
Transformations that fuse together others of their kind.
Modules
Fuses multiple Filter
operators into one; deduplicates predicates.
Turns FlatMap
into Map
if only one row is produced by flatmap.
Fuses multiple Join
operators into one Join
operator.
Fuses a sequence of Map
operators in to one Map
operator.
Fuses a sequence of Negate
operators in to one or zero Negate
operators.
Fuses Project operators with parent operators when possible.
Fuses reduce operators with parent operators if possible.
Fuses a sequence of TopK
operators in to one TopK
operator
Fuses multiple Union
operators into one.