Examples of org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POUnion

Package org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators

Examples of org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POUnion

org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POUnion
The union operator that combines the two inputs into a single stream. Note that this doesn't eliminate duplicate tuples. The Operator will also be added to every map plan which processes more than one input. This just pulls out data from the piepline using the proposed single threaded shared execution model. By shared execution I mean, one input to the Union operator is called once and the execution moves to the next non-drained input till all the inputs are drained.

        PhysicalPlan ldFil1 = GenPhyOp.loadedFilter();
        PhysicalPlan ldFil2 = GenPhyOp.loadedFilter();
        php.merge(ldFil1);
        php.merge(ldFil2);


        POUnion un = GenPhyOp.topUnionOp();
        php.addAsLeaf(un);


        POStore st = GenPhyOp.topStoreOp();
        php.add(st);

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