fix(rust, python): fix parquet regression upstream in arrow2 (#5797)

pola-rs · Dec 13, 2022 · 0bc2768 · 0bc2768
1 parent d29fa30
commit 0bc2768
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Showing 4 changed files with 40 additions and 6 deletions.
diff --git a/Cargo.toml b/Cargo.toml
@@ -36,7 +36,7 @@ package = "arrow2"
 git = "https://github.com/ritchie46/arrow2"
 # rev = "368aacc173a27e2a763d2c6396682a688e5a2707"
 # path = "../arrow2"
-branch = "polars_2022-12-11"
+branch = "polars_2022-12-13"
 version = "0.14.1"
 default-features = false
 features = [

diff --git a/py-polars/Cargo.lock b/py-polars/Cargo.lock
diff --git a/py-polars/Cargo.toml b/py-polars/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "py-polars"
-version = "0.15.4"
+version = "0.15.5"
 authors = ["ritchie46 <ritchie46@gmail.com>"]
 documentation = "https://pola-rs.github.io/polars/py-polars/html/reference/index.html"
 edition = "2021"

diff --git a/py-polars/tests/unit/io/test_parquet.py b/py-polars/tests/unit/io/test_parquet.py
@@ -264,3 +264,36 @@ def test_nested_sliced() -> None:
         df.write_parquet(f)
         f.seek(0)
         assert pl.read_parquet(f).frame_equal(df)
+
+
+def test_parquet_5795() -> None:
+    df_pd = pd.DataFrame(
+        {
+            "a": [
+                "V",
+                "V",
+                "V",
+                "V",
+                "V",
+                "V",
+                "V",
+                "V",
+                "V",
+                "V",
+                "V",
+                "V",
+                "V",
+                "V",
+                None,
+                None,
+                None,
+                None,
+                None,
+                None,
+            ]
+        }
+    )
+    f = io.BytesIO()
+    df_pd.to_parquet(f)
+    f.seek(0)
+    assert pl.read_parquet(f).frame_equal(pl.from_pandas(df_pd))