fresh-borzoni opened a new issue, #543: URL: https://github.com/apache/fluss-rust/issues/543
### Search before asking - [x] I searched in the [issues](https://github.com/apache/fluss-rust/issues) and found nothing similar. ### Description The Rust scan path skips Java's typed-vector layer (VectorizedColumnBatch / ArrowRowColumnVector). Two consequences: * Top-level accessors do column.data_type() + downcast on every call. * Nested get_row eagerly materializes the whole struct and copies every leaf string and blob. Java does the type dispatch once at construction and accessors are zero-copy. * typed dispatch: Add a TypedColumn enum + TypedBatch built once per ArrowReader from (RecordBatch, RowType), then ColumnarRow accessors become single-arm matches. * lazy nested ROW: with recursive TypedColumn::Row, the materialized nested GenericRow can hold borrowed Cows over Arrow buffers - no leaf copy. We wish keep the current trait + parameterize ColumnarRow with a lifetime most probably. ### Willingness to contribute - [x] I'm willing to submit a PR! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
