DefaultParallelismPass (Nemo Project 0.4 API)

java.lang.Object
- org.apache.nemo.common.pass.Pass
- - org.apache.nemo.compiler.optimizer.pass.compiletime.CompileTimePass
  - - org.apache.nemo.compiler.optimizer.pass.compiletime.annotating.AnnotatingPass
    - - org.apache.nemo.compiler.optimizer.pass.compiletime.annotating.DefaultParallelismPass

All Implemented Interfaces:

java.util.function.Function<IRDAG,IRDAG>
```
public final class DefaultParallelismPass
extends AnnotatingPass
```
Optimization pass for tagging parallelism execution property.

Constructor Summary

Constructors
Constructor	Description
`DefaultParallelismPass()`	Default constructor with desired number of source parallelism 1, shuffle decreasing factor 2.
`DefaultParallelismPass(int desiredSourceParallelism, int shuffleDecreaseFactor)`	Default constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

IRDAG apply(IRDAG dag)

boolean equals(java.lang.Object o)

int hashCode()
- Methods inherited from class org.apache.nemo.compiler.optimizer.pass.compiletime.annotating.AnnotatingPass
  getExecutionPropertiesToAnnotate, getPrerequisiteExecutionProperties
- Methods inherited from class org.apache.nemo.common.pass.Pass
  addCondition, getCondition
- Methods inherited from class java.lang.Object
  clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
- Methods inherited from interface java.util.function.Function
  andThen, compose

- Constructor Detail
  - DefaultParallelismPass
```
public DefaultParallelismPass()
```
    Default constructor with desired number of source parallelism 1, shuffle decreasing factor 2.
  - DefaultParallelismPass
```
public DefaultParallelismPass(int desiredSourceParallelism,
                              int shuffleDecreaseFactor)
```
    Default constructor.
    
    Parameters:
    
    desiredSourceParallelism - the desired number of source parallelism.
    
    shuffleDecreaseFactor - the parallelism decrease factor for shuffle edge.
- Method Detail
  - apply
```
public IRDAG apply(IRDAG dag)
```
  - equals
```
public boolean equals(java.lang.Object o)
```
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object