Asura7969 commented on code in PR #8489:
URL: https://github.com/apache/arrow-datafusion/pull/8489#discussion_r1422134975
##########
datafusion/physical-plan/src/common.rs:
##########
@@ -139,17 +140,24 @@ pub fn compute_record_batch_statistics(
) -> Statistics {
let nb_rows = batches.iter().flatten().map(RecordBatch::num_rows).sum();
- let total_byte_size = batches
- .iter()
- .flatten()
- .map(|b| b.get_array_memory_size())
- .sum();
-
let projection = match projection {
Some(p) => p,
None => (0..schema.fields().len()).collect(),
};
+ let total_byte_size = batches
+ .iter()
+ .flatten()
+ .map(|b| {
+ b.columns()
+ .iter()
+ .enumerate()
+ .filter(|(index, _)| projection.contains(index))
Review Comment:
thanks for your advice
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