public class SecondaryKeyOptimizer extends MROpPlanVisitor
mCurrentWalker, mPlan| Constructor and Description |
|---|
SecondaryKeyOptimizer(MROperPlan plan) |
| Modifier and Type | Method and Description |
|---|---|
int |
getDistinctChanged() |
int |
getNumMRUseSecondaryKey() |
int |
getNumSortRemoved() |
void |
visitMROp(MapReduceOper mr) |
getPlan, popWalker, pushWalker, visitpublic SecondaryKeyOptimizer(MROperPlan plan)
plan - The MROperPlan to visit to discover keyTypepublic void visitMROp(MapReduceOper mr) throws VisitorException
visitMROp in class MROpPlanVisitorVisitorExceptionpublic int getNumMRUseSecondaryKey()
public int getNumSortRemoved()
public int getDistinctChanged()
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