alamb commented on a change in pull request #1622:
URL: https://github.com/apache/arrow-datafusion/pull/1622#discussion_r789887788



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File path: datafusion/src/physical_plan/file_format/parquet.rs
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@@ -473,6 +536,69 @@ mod tests {
         schema::types::SchemaDescPtr,
     };
 
+    #[tokio::test]

Review comment:
       >  I'm relatively new to Rust so not sure how expensive cloning Arc is.
   
   `Clone`ing an Arc is very fast (it increments an atomic counter) 🚤 




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