tustvold commented on code in PR #5135:
URL: https://github.com/apache/arrow-rs/pull/5135#discussion_r1409117069
##########
parquet/src/arrow/async_reader/mod.rs:
##########
@@ -385,13 +385,28 @@ impl<T: AsyncFileReader + Send + 'static>
ParquetRecordBatchStreamBuilder<T> {
offset: self.offset,
};
+ // Ensure schema of ParquetRecordBatchStream respects projection, and
does
+ // not store metadata (same as for ParquetRecordBatchReader and
emitted RecordBatches)
+ let projected_fields = match reader.fields.as_deref().map(|pf|
&pf.arrow_type) {
Review Comment:
I'll have a quick play, stand by
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