[GitHub] [kafka] dengziming opened a new pull request #8941: KAFKA-10195: Move offset management code out of ConsumerCoordinator

[GitBox]

dengziming opened a new pull request #8941:
URL: https://github.com/apache/kafka/pull/8941


   
   We are adding new feature to `ConsumerCoordinator` and it's becoming more 
and more complex, the offset management code in `ConsumerCoordinator` can be 
moved to a new class because "offset management code" almost don't interact 
with "partition assignment".
   
   Below is code change list:
   
   1. move offset management code to `OffsetManageCoordinator`
   2. remain methods used in KafkaConsumer
   
   Below is UML class diagram:
   
![image](https://user-images.githubusercontent.com/26023240/85947857-c7113400-b97f-11ea-83e2-61a92fa2c22d.png)
   
   
   ### Committer Checklist (excluded from commit message)
   - [ ] Verify design and implementation 
   - [ ] Verify test coverage and CI build status
   - [ ] Verify documentation (including upgrade notes)
   


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