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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/11/23 12:14:35 UTC

[GitHub] [arrow] rdettai commented on pull request #8697: ARROW-10633: [Rust][DataFusion] Dependency version updates

rdettai commented on pull request #8697:
URL: https://github.com/apache/arrow/pull/8697#issuecomment-732125285


   @alamb @Dandandan Upgrading Tokio to 0.3 is not as simple as it seams. The runtime is not compatible with the 0.2 one, and it requires to add a compatibility adapter that runs an extra thread (https://docs.rs/tokio-compat-02/0.1.2/tokio_compat_02/). 
   
   The problem is that many libraries are still running 0.2 (as 0.3 is fairly recent):
   - tonic: flight is mostly broken because of that
   - rustoto: not directly used but used by external users (and not just me I guess 😄)
   
   What was the reason for upgrading Tokio? If there is no clear reason, I would be in favor of downgrading back to 0.2.


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