RocMarshal commented on PR #25647:
URL: https://github.com/apache/flink/pull/25647#issuecomment-2473018279

   Thanks @zhuzhurk @1996fanrui for the comments.
   
   Please let me to synchronize the background information and introduce the 
reasons for this change.
   
   The feature freeze for version 2.0 will take place at the end of November 
2024. 
   
   > Does you mean that the balance of Slot to TM[1] is not planned to be 
supported in Flink 2.0?
   
   We expect to release this complete feature in 2.0 ideally
   but I estimate that the two core PRs at the TaskManager level may face some 
risks based on the current progress, 
   
   - https://github.com/apache/flink/pull/25517(Support TM level balancing for 
AdaptiveSheduler)
   - https://github.com/apache/flink/pull/25174(Support TM level balancing for 
DefaultSheduler)
   
   
   Meanwhile, for FLIP-370, 
   - enabling the switch to support slot-level balancing could address a 
significant portion of the tasks skew issues. 
   - The solutions for these two PRs are already determined and are currently 
awaiting review. 
        - https://github.com/apache/flink/pull/25647
        - https://github.com/apache/flink/pull/25504
   
   Therefore, I'd like to attempt to first support the slot-level balancing for 
the two schedulers.
   
   Please let me know what's your opinion~ Thx!
   


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