Jefffrey commented on code in PR #7962:
URL: https://github.com/apache/arrow-datafusion/pull/7962#discussion_r1379308582
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datafusion/core/src/datasource/file_format/arrow.rs:
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@@ -99,7 +102,177 @@ impl FileFormat for ArrowFormat {
}
}
-fn read_arrow_schema_from_reader<R: Read + Seek>(reader: R) ->
Result<SchemaRef> {
- let reader = FileReader::try_new(reader, None)?;
- Ok(reader.schema())
+const ARROW_MAGIC: [u8; 6] = [b'A', b'R', b'R', b'O', b'W', b'1'];
Review Comment:
Ah apologies, I took a look at the parquet code and I see what you mean now.
That indeed would be a better approach, in line with existing behaviour for
`FileReader` 👍
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