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https://issues.apache.org/jira/browse/ARROW-11593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17284005#comment-17284005
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Dominik Moritz commented on ARROW-11593:
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If lz4 is the issue, maybe we could switch to 
https://github.com/PSeitz/lz4_flex, which compiles to WASM. 

> Parquet does not support wasm32-unknown-unknown target
> ------------------------------------------------------
>
>                 Key: ARROW-11593
>                 URL: https://issues.apache.org/jira/browse/ARROW-11593
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust
>            Reporter: Dominik Moritz
>            Priority: Major
>
> The Arrow crate successfully compiles to WebAssembly (e.g. 
> https://github.com/domoritz/arrow-wasm) but the Parquet crate currently does 
> not support the`wasm32-unknown-unknown` target. 
> Try out the repository at 
> https://github.com/domoritz/parquet-wasm/commit/e877f9ad9c45c09f73d98fab2a8ad384a802b2e0.
>  The problem seems to be in liblz4, even if I do not include lz4 in the 
> feature flags.  



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