[PR] MINOR: Perf improvement in share state batch combiner. [kafka]

Sat, 07 Dec 2024 00:27:26 -0800 


smjn opened a new pull request, #18090:
URL: https://github.com/apache/kafka/pull/18090

   * The state batch combiner algorithm prunes and merges state batches in the 
current state and incoming RPC requests.
   * During profiling a simple data structure change showed great promise.
   * This PR incorporates the change (ArrayList<> -> LinkedList<>).
   
   **Before**
   ![Screenshot 2024-12-07 at 1 46 29 
PM](https://github.com/user-attachments/assets/0ca5d7c8-0c7e-44c3-8dd7-eb5f6268b4f8)
   
   **After**
   ![Screenshot 2024-12-07 at 1 47 24 
PM](https://github.com/user-attachments/assets/382c340d-9d53-467c-b147-35cfc720cba5)
    


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