Examples of 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.

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

    }


    @Override
    public void visit(LOUnion loUnion) throws FrontendException {
        String scope = DEFAULT_SCOPE;
        POUnion physOp = new POUnion(new OperatorKey(scope,nodeGen.getNextNodeId(scope)), loUnion.getRequestedParallelism());
        physOp.addOriginalLocation(loUnion.getAlias(), loUnion.getLocation());
        currentPlan.add(physOp);
        physOp.setResultType(DataType.BAG);
        logToPhyMap.put(loUnion, physOp);
        List<Operator> ops = loUnion.getPlan().getPredecessors(loUnion);


        for (Operator l : ops) {
            PhysicalOperator from = logToPhyMap.get(l);

View Full Code Here

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

        POGlobalRearrange grAB = GenPhyOp.topGlobalRearrangeOp();


        POPackage pkAB = GenPhyOp.topPackageOp();


        POFilter fAB = GenPhyOp.topFilterOp();
        POUnion unABC = GenPhyOp.topUnionOp();


        php.add(lA);
        php.add(lB);


        php.add(fA);

View Full Code Here

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

        POGlobalRearrange grAB = GenPhyOp.topGlobalRearrangeOp();


        POPackage pkAB = GenPhyOp.topPackageOp();


        POFilter fAB = GenPhyOp.topFilterOp();
        POUnion unABC = GenPhyOp.topUnionOp();


        php.add(lA);
        php.add(lB);


        php.add(fA);

View Full Code Here

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

        php.add(fl3);
        php.add(fl4);
        php.connect(sp2, fl3);
        php.connect(sp2, fl4);


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


        POStore st = GenPhyOp.topStoreOp();
        php.addAsLeaf(st);
        run(php, "test/org/apache/pig/test/data/GoldenFiles/MRC13.gld");

View Full Code Here

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

        php.add(fl3);
        php.add(fl4);
        php.connect(sp2, fl3);
        php.connect(sp2, fl4);


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


        POStore st = GenPhyOp.topStoreOp();
        php.addAsLeaf(st);
        run(php, "test/org/apache/pig/test/data/GoldenFiles/MRC14.gld");

View Full Code Here

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

        PhysicalPlan ldGrpChain2 = GenPhyOp.loadedGrpChain();


        php.merge(ldGrpChain1);
        php.merge(ldGrpChain2);


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


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

View Full Code Here

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

        PhysicalPlan ldGrpChain2 = GenPhyOp.loadedGrpChain();


        php.merge(ldGrpChain1);
        php.merge(ldGrpChain2);


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


        PhysicalPlan ldFil1 = GenPhyOp.loadedFilter();


        php.merge(ldFil1);

View Full Code Here

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

        PhysicalPlan ldGrpChain2 = GenPhyOp.loadedGrpChain();


        php.merge(ldGrpChain1);
        php.merge(ldGrpChain2);


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


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

View Full Code Here

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

        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);

View Full Code Here

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

            mapPlan.addAsLeaf(getUnion());
        }
    }
    
    private POUnion getUnion(){
        return new POUnion(new OperatorKey(scope,nig.getNextNodeId(scope)));
    }

View Full Code Here

0 1 2 3 4 5

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.