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.

    }


    @Override
    public void visit(LOUnion loUnion) throws FrontendException {
        String scope = DEFAULT_SCOPE;
        POUnion physOp = new POUnion(new OperatorKey(scope,nodeGen.getNextNodeId(scope)), loUnion.getRequestedParallelisam());
        physOp.setAlias(loUnion.getAlias());
        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

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

View Full Code Here

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

View Full Code Here

    }
    
    @Override
    public void visitLOUnion(LOUnion loUnion) throws IOException {
        String scope = DEFAULT_SCOPE;
        POUnion physOp = new POUnion(new OperatorKey(scope,nodeGen.getNextNodeId(scope)), loUnion.getRequestedParallelisam());
        physOp.setAlias(loUnion.getAlias());
        currentPlan.add(physOp);
        physOp.setResultType(DataType.BAG);
        logToPhyMap.put(loUnion, physOp);
        List<Operator> ops = plan.getPredecessors(loUnion);


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

View Full Code Here

    }


    @Override
    public void visit(LOUnion loUnion) throws FrontendException {
        String scope = DEFAULT_SCOPE;
        POUnion physOp = new POUnion(new OperatorKey(scope,nodeGen.getNextNodeId(scope)), loUnion.getRequestedParallelisam());
        physOp.setAlias(loUnion.getAlias());
        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

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

View Full Code Here

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

View Full Code Here

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

View Full Code Here

    }


    @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

            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 6

TOP

Related Classes of org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POUnion

org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceOper

org.apache.pig.backend.hadoop.executionengine.physicalLayer.Result

org.apache.pig.experimental.logical.relational.LogToPhyTranslationVisitor

org.apache.pig.newplan.logical.relational.LogToPhyTranslationVisitor

org.apache.pig.pen.util.ExampleTuple

org.apache.pig.test.TestMRCompiler

java.util.BitSet

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.