kevinjqliu commented on code in PR #1023:
URL: https://github.com/apache/iceberg-python/pull/1023#discussion_r1709774974
##########
pyiceberg/table/__init__.py:
##########
@@ -593,7 +593,9 @@ def delete(self, delete_filter: Union[str,
BooleanExpression], snapshot_properti
filtered_df = df.filter(preserve_row_filter)
# Only rewrite if there are records being deleted
- if len(df) != len(filtered_df):
+ if len(filtered_df) == 0:
+ replaced_files.append((original_file.file, []))
+ elif len(df) != len(filtered_df):
Review Comment:
nit: is it more readable if inlined?
```
if filtered_df and len(df) != len(filtered_df):
```
##########
tests/integration/test_writes/test_writes.py:
##########
@@ -1309,3 +1309,27 @@ def
test_table_v1_with_null_nested_namespace(session_catalog: Catalog, arrow_tab
# We expect no error here
session_catalog.drop_table(identifier)
+
+
+@pytest.mark.integration
+def test_overwrite_all_data_with_filter(session_catalog: Catalog) -> None:
+ schema = Schema(
+ NestedField(1, "id", StringType(), required=True),
+ NestedField(2, "name", StringType(), required=False),
+ identifier_field_ids=[1],
+ )
+
+ data = pa.Table.from_pylist(
+ [
+ {"id": "1", "name": "Amsterdam"},
+ {"id": "2", "name": "San Francisco"},
+ {"id": "3", "name": "Drachten"},
+ ],
+ schema=schema.as_arrow(),
+ )
+
+ identifier = "default.test_overwrite_all_data_with_filter"
+ tbl = _create_table(session_catalog, identifier, data=[data],
schema=schema)
+ tbl.overwrite(data, In("id", ["1", "2", "3"]))
+
+ assert len(tbl.scan().to_arrow()) == 3
Review Comment:
nit: since all data match the filter, the `overwrite` operation is a no-op,
right? if so, can we assert that in the test? maybe show that the files are the
same
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