Package org.apache.drill.exec.physical.config

Class MergingReceiverPOP

java.lang.Object

org.apache.drill.exec.physical.base.AbstractBase

org.apache.drill.exec.physical.base.AbstractReceiver

org.apache.drill.exec.physical.config.MergingReceiverPOP

All Implemented Interfaces:

Iterable<PhysicalOperator>, GraphValue<PhysicalOperator>, FragmentLeaf, PhysicalOperator, Receiver

public class MergingReceiverPOP
extends AbstractReceiver

Field Summary

Fields

Modifier and Type	Field	Description
static final String	OPERATOR_TYPE

Fields inherited from class org.apache.drill.exec.physical.base.AbstractBase

INIT_ALLOCATION, initialAllocation, MAX_ALLOCATION, maxAllocation, userName

Constructor Summary

Constructors

Constructor	Description
MergingReceiverPOP(int oppositeMajorFragmentId, List<MinorFragmentEndpoint> senders, List<Order.Ordering> orderings, boolean spooling)

Method Summary

Modifier and Type	Method	Description
<T, X, E extends Throwable> T	accept(PhysicalVisitor<T,X,E> physicalVisitor, X value)	Provides capability to build a set of output based on traversing a query graph tree.
String	getOperatorType()
List<Order.Ordering>	getOrderings()
boolean	supportsOutOfOrderExchange()	Whether or not this receive supports out of order exchange.

Methods inherited from class org.apache.drill.exec.physical.base.AbstractReceiver

getNewWithChildren, getNumSenders, getOppositeMajorFragmentId, getProvidingEndpoints, isSpooling, iterator

Methods inherited from class org.apache.drill.exec.physical.base.AbstractBase

accept, getCost, getInitialAllocation, getMaxAllocation, getOperatorId, getSVMode, getUserName, isBufferedOperator, isExecutable, setCost, setMaxAllocation, setOperatorId

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.drill.common.graph.GraphValue

accept

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface org.apache.drill.exec.physical.base.PhysicalOperator

getCost, getInitialAllocation, getMaxAllocation, getOperatorId, getSVMode, getUserName, isBufferedOperator, isExecutable, setCost, setMaxAllocation, setOperatorId

Field Details

OPERATOR_TYPE

public static final String OPERATOR_TYPE

See Also:

• Constant Field Values

Constructor Details

MergingReceiverPOP

public MergingReceiverPOP(int oppositeMajorFragmentId,
 List<MinorFragmentEndpoint> senders,
 List<Order.Ordering> orderings,
 boolean spooling)

Method Details

supportsOutOfOrderExchange

public boolean supportsOutOfOrderExchange()

Description copied from interface: Receiver

Whether or not this receive supports out of order exchange. This provides a hint for the scheduling node on whether the receiver can start work if only a subset of all sending endpoints are currently providing data. A random receiver would supports this form of operation. A NWAY receiver would not.

Returns:

True if this receiver supports working on a streaming/out of order input.

accept

public <T,
X,
E extends Throwable> T accept(PhysicalVisitor<T,X,E> physicalVisitor,
 X value)
                                   throws E

Description copied from interface: PhysicalOperator

Provides capability to build a set of output based on traversing a query graph tree.

Specified by:

accept in interface PhysicalOperator

Overrides:

accept in class AbstractReceiver

Throws:

E extends Throwable

getOrderings

public List<Order.Ordering> getOrderings()

getOperatorType

public String getOperatorType()