From 723f91f0c50aff89d3f0e0ad464500d8d4d065be Mon Sep 17 00:00:00 2001
From: Ion Koutsouris <15728914+ion-elgreco@users.noreply.github.com>
Date: Tue, 6 Feb 2024 19:17:11 +0100
Subject: [PATCH] add test

---
 python/tests/test_writer.py | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/python/tests/test_writer.py b/python/tests/test_writer.py
index 9252dfdd41..e210f0d4a0 100644
--- a/python/tests/test_writer.py
+++ b/python/tests/test_writer.py
@@ -1251,3 +1251,24 @@ def test_with_deltalake_schema(tmp_path: pathlib.Path, sample_data: pa.Table):
     )
     delta_table = DeltaTable(tmp_path)
     assert delta_table.schema().to_pyarrow() == sample_data.schema
+
+
+def test_write_stats_empty_rowgroups_2169(tmp_path: pathlib.Path):
+    data = pa.table(
+        {
+            "data": pa.array(["B"] * 1024 * 33),
+        }
+    )
+    write_deltalake(
+        tmp_path,
+        data,
+        max_rows_per_file=1024 * 32,
+        max_rows_per_group=1024 * 16,
+        min_rows_per_group=8 * 1024,
+        mode="overwrite",
+    )
+    dt = DeltaTable(tmp_path)
+    assert (
+        dt.to_pyarrow_dataset().to_table(filter=(pc.field("data") == "B")).shape[0]
+        == 33792
+    )