[I] Implement DynamicWriteBatchSizeEstimator [fluss-rust]

["fresh-borzoni (via GitHub)" <gi...@apache.org>]

fresh-borzoni opened a new issue, #445:
URL: https://github.com/apache/fluss-rust/issues/445

   ### Search before asking
   
   - [x] I searched in the [issues](https://github.com/apache/fluss-rust/issues) and found nothing similar.
   
   
   ### Description
   
   Java dynamically adjusts the batch size target per table based on observed actual batch sizes - grows 10% when batches fill past 80%, shrinks 5% when below 50%, clamped to [2 * pageSize, maxBatchSize]. This right-sizes memory reservations for tables with small rows. We currently use a fixed writer_batch_size for all tables. The impact is less critical for us than Java since our memory limiter is semaphore-based (no physical page pool), but it would still improve memory budget utilization.
   
   ### Willingness to contribute
   
   - [x] I'm willing to submit a PR!


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Re: [I] Implement DynamicWriteBatchSizeEstimator [fluss-rust]

["fresh-borzoni (via GitHub)" <gi...@apache.org>]

fresh-borzoni closed issue #445: Implement DynamicWriteBatchSizeEstimator
URL: https://github.com/apache/fluss-rust/issues/445


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