ExponentialTimeBoundedRetry (Alluxio Core - Common Utilities 294 API)

java.lang.Object
- alluxio.retry.TimeBoundedRetry
- - alluxio.retry.ExponentialTimeBoundedRetry

All Implemented Interfaces:

RetryPolicy
```
public final class ExponentialTimeBoundedRetry
extends TimeBoundedRetry
```
A retry policy which uses exponential backoff and a maximum duration time bound. A final retry will be performed at the time bound before giving up. For example, with initial sleep 10ms, maximum sleep 100ms, and maximum duration 500ms, the sleep timings would be [10, 20, 40, 80, 100, 100, 100, 50], assuming the operation being retries takes no time. The 50 at the end is because the previous times add up to 450, so the mechanism sleeps for only 50ms before the final attempt. However, those are just the base sleep timings. For each sleep time, we multiply by a random number from 1 to 1.1 to add jitter to avoid hotspotting.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class ExponentialTimeBoundedRetry.Builder
Builder for time bounded exponential retry mechanisms.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static ExponentialTimeBoundedRetry.Builder`	`builder()`
`protected java.time.Duration`	`computeNextWaitTime()`

Methods inherited from class alluxio.retry.TimeBoundedRetry
attempt, getAttemptCount

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

- Method Detail
  - computeNextWaitTime
```
protected java.time.Duration computeNextWaitTime()
```
    Specified by:
    
    computeNextWaitTime in class TimeBoundedRetry
    
    Returns:
    
    how long to wait before the next retry
  - builder
```
public static ExponentialTimeBoundedRetry.Builder builder()
```
    Returns:
    
    a builder