tustvold commented on code in PR #2854:
URL: https://github.com/apache/arrow-rs/pull/2854#discussion_r990805688
##########
parquet/src/arrow/arrow_writer/mod.rs:
##########
@@ -1108,6 +1110,55 @@ mod tests {
roundtrip(batch, Some(SMALL_SIZE / 2));
}
+ #[test]
+ fn arrow_writer_page_size() {
+ let mut rng = thread_rng();
+ let schema =
+ Arc::new(Schema::new(vec![Field::new("col", DataType::Utf8,
false)]));
+
+ let mut builder = StringBuilder::with_capacity(1_000, 2 * 1_000);
+
+ for _ in 0..10_000 {
+ let value = (0..200)
+ .map(|_| rng.gen_range(b'a'..=b'z') as char)
+ .collect::<String>();
+
+ builder.append_value(value);
+ }
+
+ let array = Arc::new(builder.finish());
+
+ let batch = RecordBatch::try_new(schema, vec![array]).unwrap();
+
+ let file = tempfile::tempfile().unwrap();
+
+ let props = WriterProperties::builder()
+ .set_max_row_group_size(usize::MAX)
+ .set_data_pagesize_limit(256)
Review Comment:
That is expected and I believe consistent with other parquet writers. The
limit is best effort
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