branch-4.1: [fix](mc) fix memory leak and optimize large data write for MaxCompute connector (#61245)#61745
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morningman merged 1 commit intoapache:branch-4.1from Mar 27, 2026
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…e connector (apache#61245) ### What problem does this PR solve? Fix: - Fix potential memory leak in MaxComputeJniScanner by closing currentSplitReader in close(). - Fix potential memory leak in MaxComputeJniWriter by restructuring close() with try-finally to ensure allocator is always closed even when batchWriter.commit() throws. Also close VectorSchemaRoot after each batch write. - Fix maxWriteBatchRows parameter key mismatch between BE ("max_write_batch_rows") and JNI ("mc.max_write_batch_rows"), which caused user-customized values to be silently ignored. Optimization: - Split large Arrow batches into smaller chunks (controlled by mc.max_write_batch_rows, default 4096) to avoid HTTP 413 Request Entity Too Large errors from MaxCompute Storage API. - Skip unnecessary SORT node for static partition INSERT, since all data goes to a single known partition and no dynamic routing is needed. - Enable ZSTD compression for Arrow data transfer to reduce network bandwidth. New catalog properties: - mc.max_write_batch_rows: max rows per Arrow batch for write (default: 4096) - mc.max_field_size_bytes: max field size in bytes for write session (default: 8MB) Co-authored-by: daidai <changyuwei@selectdb.com>
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yiguolei
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bp #61245