Tukwila Modified Iterator Model

• Same operations

  open, getNext, close
  

• Some operators multithreaded

  • Use buffering and synchronization
  • Schedule work while blocked
  • Multithreaded operators need more memory

SelectClient = “Atkins”

JoinPressRel.Symbol = Clients.Symbol

Scan

PressRel

Scan

Clients

JoinSymbol = Northwest.CoSymbol

ProjectCoSymbol

ScanNorthwest

Previous slide

Next slide

Back to first slide

View graphic version