Fokko commented on code in PR #277:
URL: https://github.com/apache/iceberg-rust/pull/277#discussion_r1541095666
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crates/iceberg/src/arrow.rs:
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@@ -106,3 +114,224 @@ impl ArrowReader {
ProjectionMask::all()
}
}
+
+/// The key of column id in the metadata of arrow field.
+pub const COLUMN_ID_META_KEY: &str = "column_id";
Review Comment:
This is a tricky one. In Arrow the `PARQUET:` prefix indicates that it is
something specific to Parquet, in this case the
[`field_id`](https://github.com/apache/parquet-format/blob/e517ac4dbe08d518eb5c2e58576d4c711973db94/src/main/thrift/parquet.thrift#L459).
Would be awesome if we could add a test for this.
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