etseidl commented on code in PR #6117:
URL: https://github.com/apache/arrow-rs/pull/6117#discussion_r1693215107
##########
parquet/src/file/writer.rs:
##########
@@ -649,13 +649,10 @@ impl<'a, W: Write + Send> SerializedRowGroupWriter<'a, W>
{
));
}
- let file_offset = self.buf.bytes_written() as i64;
-
let map_offset = |x| x - src_offset + write_offset as i64;
let mut builder =
ColumnChunkMetaData::builder(metadata.column_descr_ptr())
.set_compression(metadata.compression())
.set_encodings(metadata.encodings().clone())
- .set_file_offset(file_offset)
Review Comment:
Sorry, maybe this needs to be made clearer in the documentation. The spec
still requires the field to be written so old readers don't break (i.e. it is
still marked `required` in the thrift IDL). The correct behavior now is to
write a 0 here.
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