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Interface Summary | |
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Transform | Optimizer interface. |
Class Summary | |
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ColumnPruner | Implementation of one of the rule-based optimization steps. |
ColumnPruner.ColumnPrunerWalker | Walks the op tree in post order fashion (skips selects with file sink or script op children) |
ColumnPrunerProcCtx | This class implements the processor context for Column Pruner. |
ColumnPrunerProcFactory | Factory for generating the different node processors used by ColumnPruner. |
ColumnPrunerProcFactory.ColumnPrunerDefaultProc | The Default Node Processor for Column Pruning. |
ColumnPrunerProcFactory.ColumnPrunerFilterProc | Node Processor for Column Pruning on Filter Operators. |
ColumnPrunerProcFactory.ColumnPrunerGroupByProc | Node Processor for Column Pruning on Group By Operators. |
ColumnPrunerProcFactory.ColumnPrunerReduceSinkProc | The Node Processor for Column Pruning on Reduce Sink Operators. |
ColumnPrunerProcFactory.ColumnPrunerSelectProc | The Node Processor for Column Pruning on Select Operators. |
GenMapRedUtils | General utility common functions for the Processor to convert operator into map-reduce tasks |
GenMRFileSink1 | Processor for the rule - table scan followed by reduce sink |
GenMROperator | Processor for the rule - no specific rule fired |
GenMRProcContext | Processor Context for creating map reduce task. |
GenMRProcContext.GenMapRedCtx | GenMapRedCtx is used to keep track of the current state. |
GenMRProcContext.GenMRUnionCtx | |
GenMRRedSink1 | Processor for the rule - table scan followed by reduce sink |
GenMRRedSink2 | Processor for the rule - reduce sink followed by reduce sink |
GenMRRedSink3 | Processor for the rule - table scan followed by reduce sink |
GenMRTableScan1 | Processor for the rule - table scan |
GenMRUnion1 | Processor for the rule - any operator tree followed by union |
Optimizer | Implementation of the optimizer |
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