Add --chunk-concurrent-size for parallel row-copy - #1688

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dnovitski:pr-1398-rebased

Commits on Jun 13, 2026

Add --chunk-concurrent-size for parallel row-copy

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ad5bbbb
Speed up parallel row-copy: overlap range calc, drop per-batch barrier, cut per-chunk round-trips

dnovitski
and
claude
committed
e989096