[GitHub] [arrow-rs] kylebarron commented on pull request #2896: Support building `object_store` and `parquet` on wasm32-unknown-unknown target

["kylebarron (via GitHub)" <gi...@apache.org>]

kylebarron commented on PR #2896:
URL: https://github.com/apache/arrow-rs/pull/2896#issuecomment-1438959647

   > and some of the compression features on `parquet` won't work
   
   As a note on this, I've gotten zstd and lz4-flex to both compile to wasm, so it's possible to have better wasm parquet support if you're interested. For zstd I think it should work out of the box with arrow-rs IIRC (you may need to make sure you're building against the right clang, especially if on Mac, see https://github.com/kylebarron/parquet-wasm/pull/42/files). For lz4, we'd need to update arrow-rs to switch between lz4 and lz4-flex depending on whether building for wasm or not. See https://github.com/jorgecarleitao/parquet2/pull/124 for the relevant code in parquet2. As of that, parquet2 builds to `wasm32-unknown-unknown` for all compressors


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