ExponentialBackoffDelayPolicy (Cloudera CDP Java SDK 0.9.108 API)

java.lang.Object
- com.cloudera.cdp.http.ExponentialBackoffDelayPolicy

All Implemented Interfaces:

DelayPolicy
```
public class ExponentialBackoffDelayPolicy
extends Object
implements DelayPolicy
```
Implement an exponential backoff policy. For a given 'base' and 'growthFactor' a delay will be computed to be:
'base' * 'growthFactor' ^ (attempts - 1)
For example:
- base = 500ms, growthFactor = 2
- attempts = 1, delay = 500 * 2^0 = 500ms
- attempts = 2, delay = 500 * 2^1 = 1sec
- attempts = 3, delay = 500 * 2^2 = 2sec
Optional jitter causes each computed delay to vary from its deterministic value, as computed above, up to a certain percentage. For example:
- base = 500ms, growthFactor = 2, jitterPercentage = 5
- attempts = 1, delay = 500 * 2^0 +/- 25ms = 475ms - 525ms
- attempts = 2, delay = 500 * 2^1 +/- 50ms = 900ms - 1100ms
- attempts = 3, delay = 500 * 2^2 +/- 100ms= 1.9sec - 2.1sec

Constructor Summary

Constructors
Constructor	Description
`ExponentialBackoffDelayPolicy(int growthFactor, Duration base)`	Constructs an exponential backoff delay policy with the given 'growthFactor' and 'base'.
`ExponentialBackoffDelayPolicy(int growthFactor, Duration base, int jitterPercentage)`	Constructs an exponential backoff delay policy with the given 'growthFactor', 'base', and 'jitterPercentage'.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

Duration delay(int attempts)
Returns the delay needed before attempting the next retry.
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ExponentialBackoffDelayPolicy
```
public ExponentialBackoffDelayPolicy(int growthFactor,
                                     Duration base)
```
    Constructs an exponential backoff delay policy with the given 'growthFactor' and 'base'. There is no jitter applied.
    
    Parameters:
    
    growthFactor - The growth factor between delays. Must be positive
    
    base - The base. Must be a positive duration.
  - ExponentialBackoffDelayPolicy
```
public ExponentialBackoffDelayPolicy(int growthFactor,
                                     Duration base,
                                     int jitterPercentage)
```
    Constructs an exponential backoff delay policy with the given 'growthFactor', 'base', and 'jitterPercentage'.
    
    Parameters:
    
    growthFactor - The growth factor between delays. Must be positive
    
    base - The base. Must be a positive duration.
    
    jitterPercentage - Percentage of jitter range applied to delay. Must non-negative.
- Method Detail
  - delay
```
public Duration delay(int attempts)
```
    Description copied from interface: DelayPolicy
    
    Returns the delay needed before attempting the next retry.
    
    Specified by:
    
    delay in interface DelayPolicy
    
    Parameters:
    
    attempts - The number of attempts made to make the call
    
    Returns:
    
    The duration to wait