org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators
Class POStream
java.lang.Object
org.apache.pig.impl.plan.Operator<PhyPlanVisitor>
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStream
- All Implemented Interfaces:
- Serializable, Cloneable, Comparable<Operator>
- Direct Known Subclasses:
- POStreamLocal
public class POStream
- extends PhysicalOperator
- See Also:
- Serialized Form
Fields inherited from class org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator |
dummyBag, dummyBool, dummyDBA, dummyDouble, dummyFloat, dummyInt, dummyLong, dummyMap, dummyString, dummyTuple, input, inputAttached, inputs, lineageTracer, outputs, parentPlan, pigLogger, reporter, requestedParallelism, res, resultType |
Fields inherited from class org.apache.pig.impl.plan.Operator |
mKey |
Methods inherited from class org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator |
attachInput, clone, cloneHelper, detachInput, getInputs, getLogger, getNext, getNext, getNext, getNext, getNext, getNext, getNext, getNext, getNext, getPigLogger, getRequestedParallelism, getResultType, isBlocking, isInputAttached, processInput, reset, setInputs, setLineageTracer, setParentPlan, setPigLogger, setReporter, setRequestedParallelism, setResultType |
initialized
protected boolean initialized
binaryOutputQueue
protected BlockingQueue<Result> binaryOutputQueue
binaryInputQueue
protected BlockingQueue<Result> binaryInputQueue
allInputFromPredecessorConsumed
protected boolean allInputFromPredecessorConsumed
allOutputFromBinaryProcessed
protected boolean allOutputFromBinaryProcessed
POStream
public POStream(OperatorKey k,
ExecutableManager executableManager,
StreamingCommand command,
Properties properties)
getShipCacheProperties
public Properties getShipCacheProperties()
getCommand
public StreamingCommand getCommand()
- Get the
StreamingCommand
for this StreamSpec
.
- Returns:
- the
StreamingCommand
for this StreamSpec
getNext
public Result getNext(Tuple t)
throws ExecException
- Overrides:
getNext
in class PhysicalOperator
- Throws:
ExecException
getNextHelper
public Result getNextHelper(Tuple t)
throws ExecException
- Throws:
ExecException
toString
public String toString()
- Overrides:
toString
in class Operator<PhyPlanVisitor>
visit
public void visit(PhyPlanVisitor v)
throws VisitorException
- Description copied from class:
Operator
- Visit this node with the provided visitor. This should only be called by
the visitor class itself, never directly.
- Specified by:
visit
in class PhysicalOperator
- Parameters:
v
- Visitor to visit with.
- Throws:
VisitorException
- if the visitor has a problem.
name
public String name()
- Specified by:
name
in class Operator<PhyPlanVisitor>
supportsMultipleInputs
public boolean supportsMultipleInputs()
- Description copied from class:
Operator
- Indicates whether this operator supports multiple inputs.
- Specified by:
supportsMultipleInputs
in class Operator<PhyPlanVisitor>
- Returns:
- true if it does, otherwise false.
supportsMultipleOutputs
public boolean supportsMultipleOutputs()
- Description copied from class:
Operator
- Indicates whether this operator supports multiple outputs.
- Specified by:
supportsMultipleOutputs
in class Operator<PhyPlanVisitor>
- Returns:
- true if it does, otherwise false.
finish
public void finish()
throws IOException
- Throws:
IOException
getBinaryInputQueue
public BlockingQueue<Result> getBinaryInputQueue()
- Returns:
- the Queue which has input to binary
getBinaryOutputQueue
public BlockingQueue<Result> getBinaryOutputQueue()
- Returns:
- the Queue which has output from binary
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