alamb commented on code in PR #5554:
URL: https://github.com/apache/arrow-rs/pull/5554#discussion_r1551761295
##########
arrow-ipc/src/reader.rs:
##########
@@ -428,14 +485,24 @@ impl<'a> ArrayReader<'a> {
}
}
-/// Creates a record batch from binary data using the `crate::RecordBatch`
indexes and the `Schema`
+/// Creates a record batch from binary data using the `crate::RecordBatch`
indexes and the `Schema`.
+///
+/// If `require_alignment` is true, this function will return an error if any
array data in the
+/// input `buf` is not properly aligned.
+/// Under the hood it will use [`arrow_data::ArrayDataBuilder::build`] to
construct [`arrow_data::ArrayData`].
+///
+/// If `require_alignment` is false, this function will automatically allocate
a new aligned buffer
+/// and copy over the data if any array data in the input `buf` is not
properly aligned.
+/// (Properly aligned array data will remain zero-copy.)
+/// Under the hood it will use [`arrow_data::ArrayDataBuilder::build_aligned`]
to construct [`arrow_data::ArrayData`].
pub fn read_record_batch(
buf: &Buffer,
batch: crate::RecordBatch,
schema: SchemaRef,
dictionaries_by_id: &HashMap<i64, ArrayRef>,
projection: Option<&[usize]>,
metadata: &MetadataVersion,
+ require_alignment: bool,
Review Comment:
Filed https://github.com/apache/arrow-rs/issues/5588 to track a potentially
new API. Thanks @hzuo and @tustvold
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