org.apache.drill.exec.physical.base

Enum Exchange.ParallelizationDependency

java.lang.Object

java.lang.Enum<Exchange.ParallelizationDependency>

org.apache.drill.exec.physical.base.Exchange.ParallelizationDependency

All Implemented Interfaces:

Serializable, Comparable<Exchange.ParallelizationDependency>

Enclosing interface:

Exchange

public static enum Exchange.ParallelizationDependency
extends Enum<Exchange.ParallelizationDependency>

Exchanges are fragment boundaries in physical operator tree. It is divided into two parts. First part is Sender which becomes part of the sending fragment. Second part is Receiver which becomes part of the fragment that receives the data. Assignment dependency describes whether sender fragments depend on receiver fragment's endpoint assignment for determining its parallelization and endpoint assignment and vice versa.

Enum Constant Summary

Enum Constants

Enum Constant and Description
RECEIVER_DEPENDS_ON_SENDER
SENDER_DEPENDS_ON_RECEIVER

Method Summary

Modifier and Type	Method and Description
static Exchange.ParallelizationDependency	valueOf(String name) Returns the enum constant of this type with the specified name.
static Exchange.ParallelizationDependency[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

SENDER_DEPENDS_ON_RECEIVER

public static final Exchange.ParallelizationDependency SENDER_DEPENDS_ON_RECEIVER

RECEIVER_DEPENDS_ON_SENDER

public static final Exchange.ParallelizationDependency RECEIVER_DEPENDS_ON_SENDER

Method Detail

values

public static Exchange.ParallelizationDependency[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Exchange.ParallelizationDependency c : Exchange.ParallelizationDependency.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Exchange.ParallelizationDependency valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null