Package org.apache.drill.exec.planner.cost

Interface Summary

Interface	Description
DrillRelOptCost
DrillRelOptCostFactory
PluginCost	PluginCost describes the cost factors to be used when costing for the specific storage/format plugin
PluginCost.CheckValid<T>	An interface to check if a parameter provided by user is valid or not.

Class Summary

Class	Description
DrillCostBase	Implementation of the DrillRelOptCost, modeled similar to VolcanoCost
DrillCostBase.DrillCostFactory
DrillDefaultRelMetadataProvider
DrillRelMdDistinctRowCount
DrillRelMdMaxRowCount
DrillRelMdRowCount
DrillRelMdSelectivity
NodeResource	This class abstracts the resources like cpu and memory used up by the operators.
PluginCost.greaterThanEquals	Class which checks whether the provided parameter value is greater than or equals to a minimum limit.
PrelCostEstimates	Cost estimates per physical relation.