[Parquet] Improve dictionary decoder by unrolling loops#9662

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Dandandan merged 9 commits intoapache:mainfrom

Dandandan:avoid-copy-bitreader-get-value

Apr 7, 2026

Commits on Apr 4, 2026

Avoid byte slice copy in BitReader::get_value

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Introduce FromBitpacked trait and use debug_assert in BitReader

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Unroll dictionary scatter loop in RleDecoder::get_batch_with_dict

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Use single bounds check per chunk in dictionary scatter loop

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Fix rustfmt style_edition 2024 formatting

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Use all() instead of max() for dictionary bounds check

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Update safety comment to reflect all() bounds check

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Commits on Apr 7, 2026