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[experiment] Polars-based JSON normalizer #1793

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Hacked-together rudimentary Polars-based JSON normalizer as experiment to learn what it takes to replace current normalizer and which speedups to expect.

  • approach: process single JSON line with original normalizer to infer/create dlt schema, then process all JSON lines with Polars to create normalized files
  • basic functionality seems to work, but there's no feature parity with current normalizer
  • Polars code can probably be optimized to run faster

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@jorritsandbrink jorritsandbrink added the enhancement New feature or request label Sep 9, 2024
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