xiangyuf opened a new pull request, #23830:
URL: https://github.com/apache/flink/pull/23830

   
   ## What is the purpose of the change
   
   Fix the backoff time calculation in ExponentialBackoffDelayRetryStrategy.
   
   ## Brief change log
   
   The backoff time calculation in `ExponentialBackoffDelayRetryStrategy` 
should consider currentAttempts. It should generate consistent backoff time for 
specific attempt count.
   
   
   ## Verifying this change
   
   Please make sure both new and modified tests in this PR follows the 
conventions defined in our code quality guide: 
https://flink.apache.org/contributing/code-style-and-quality-common.html#testing
   
   This change added tests and can be verified as follows:
   
     - Added unit test in  `AsyncRetryStrategiesTest`
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): no
     - The public API, i.e., is any changed class annotated with 
`@Public(Evolving)`: no
     - The serializers: no
     - The runtime per-record code paths (performance sensitive): no
     - Anything that affects deployment or recovery: JobManager (and its 
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
     - The S3 file system connector: no
   
   ## Documentation
   
     - Does this pull request introduce a new feature? no
   


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