RendezvousHashMapper.Builder (Hekate 4.0.0)

java.lang.Object
- io.hekate.partition.RendezvousHashMapper.Builder

Enclosing class:

RendezvousHashMapper
```
public static final class RendezvousHashMapper.Builder
extends Object
```
Builder for RendezvousHashMapper.

See Also:

RendezvousHashMapper.of(ClusterTopologySupport)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`RendezvousHashMapper`	`build()`	Constructs a new mapper.
`String`	`toString()`
`RendezvousHashMapper.Builder`	`withBackupNodes(int backupNodes)`	Sets the amount of backup nodes that should be assigned to each partition by the mapper.
`RendezvousHashMapper.Builder`	`withPartitions(int partitions)`	Sets the total amount of partitions that should be managed by the mapper (value must be a power of two).

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Method Detail
  - build
```
public RendezvousHashMapper build()
```
    Constructs a new mapper.
    
    Returns:
    
    New mapper.
  - withPartitions
```
public RendezvousHashMapper.Builder withPartitions(int partitions)
```
    Sets the total amount of partitions that should be managed by the mapper (value must be a power of two).
    Value of this parameter must be above zero and must be a power of two. Default value is RendezvousHashMapper.DEFAULT_PARTITIONS.
    
    Parameters:
    
    partitions - Total amount of partitions that should be managed by the mapper (value must be a power of two).
    
    Returns:
    
    This instance.
  - withBackupNodes
```
public RendezvousHashMapper.Builder withBackupNodes(int backupNodes)
```
    Sets the amount of backup nodes that should be assigned to each partition by the mapper.
    If value of this parameter is zero then mapper will not manage backup nodes and Partition.backupNodes() will return an empty set. If value of this parameter is negative then mapper will use all available cluster nodes as backup nodes.
    
    Parameters:
    
    backupNodes - Amount of backup nodes that should be assigned to each partition by the mapper.
    
    Returns:
    
    This instance.
    
    See Also:
    
    Partition.backupNodes()
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object