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| Class Summary | |
|---|---|
| CorrelationOptimizer | Implementation of Correlation Optimizer. |
| CorrelationUtilities | Utilities for both CorrelationOptimizer and ReduceSinkDeDuplication. |
| IntraQueryCorrelation | IntraQueryCorrelation records a sub-tree of the query plan tree which can be evaluated in a single MR job. |
| QueryPlanTreeTransformation | QueryPlanTreeTransformation contains static methods used to transform the query plan tree (operator tree) based on the correlation we have detected by Correlation Optimizer. |
| ReduceSinkDeDuplication | If two reducer sink operators share the same partition/sort columns and order, they can be merged. |
| ReduceSinkDeDuplication.AbsctractReducerReducerProc | |
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