[GitHub] [arrow] mqy commented on a change in pull request #8936: ARROW-10938: [Rust] upgrade dependency "flatbuffers" to 0.8

[GitBox <gi...@apache.org>]

mqy commented on a change in pull request #8936:
URL: https://github.com/apache/arrow/pull/8936#discussion_r544856382



##########
File path: rust/parquet/src/arrow/schema.rs
##########
@@ -184,10 +184,13 @@ fn get_arrow_schema_from_metadata(encoded_meta: &str) -> Option<Schema> {
             } else {
                 bytes.as_slice()
             };
-            let message = arrow::ipc::get_root_as_message(slice);
-            message
-                .header_as_schema()
-                .map(arrow::ipc::convert::fb_to_schema)
+            if let Ok(message) = arrow::ipc::root_as_message(slice) {

Review comment:
       DONE. Since there is already a eprintln!(), the new error is cached with eprintln!() too.
   We may improve them later, right?
   
   BTW, I failed to change the return type of `get_arrow_schema_from_metadata()` from `Option<Schema>` to `Result<Schema>` or `Result<Option<Schema>>`.




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