feast-dev
@@ -176,7 +176,7 @@ class DataSource(ABC):
             was created, used for deduplicating rows.
         field_mapping (optional): A dictionary mapping of column names in this data
             source to feature names in a feature table or view. Only used for feature
-            columns, not entity or timestamp columns.
+            columns and timestamp columns, not entity columns.
         description (optional) A human-readable description.
         tags (optional): A dictionary of key-value pairs to store arbitrary metadata.
         owner (optional): The owner of the data source, typically the email of the primary
@@ -463,9 +463,11 @@ def from_proto(data_source: DataSourceProto):
             description=data_source.description,
             tags=dict(data_source.tags),
             owner=data_source.owner,
-            batch_source=DataSource.from_proto(data_source.batch_source)
-            if data_source.batch_source
-            else None,
+            batch_source=(
+                DataSource.from_proto(data_source.batch_source)
+                if data_source.batch_source
+                else None
+            ),
         )
 
     def to_proto(self) -> DataSourceProto:
@@ -643,9 +645,11 @@ def from_proto(data_source: DataSourceProto):
             description=data_source.description,
             tags=dict(data_source.tags),
             owner=data_source.owner,
-            batch_source=DataSource.from_proto(data_source.batch_source)
-            if data_source.batch_source
-            else None,
+            batch_source=(
+                DataSource.from_proto(data_source.batch_source)
+                if data_source.batch_source
+                else None
+            ),
         )
 
     @staticmethod

@@ -240,6 +240,8 @@ def _map_by_partition(iterator, spark_serialized_artifacts: _SparkSerializedArti
         ) = spark_serialized_artifacts.unserialize()
 
         if feature_view.batch_source.field_mapping is not None:
+            # Spark offline store does the field mapping in pull_latest_from_table_or_query() call
+            # This may be needed in future if this materialization engine supports other offline stores
             table = _run_pyarrow_field_mapping(
                 table, feature_view.batch_source.field_mapping
             )

@@ -33,6 +33,7 @@
 from feast.repo_config import FeastConfigBaseModel, RepoConfig
 from feast.saved_dataset import SavedDatasetStorage
 from feast.type_map import spark_schema_to_np_dtypes
+from feast.utils import _get_fields_with_aliases
 
 # Make sure spark warning doesn't raise more than once.
 warnings.simplefilter("once", RuntimeWarning)
@@ -90,16 +91,22 @@ def pull_latest_from_table_or_query(
         if created_timestamp_column:
             timestamps.append(created_timestamp_column)
         timestamp_desc_string = " DESC, ".join(timestamps) + " DESC"
-        field_string = ", ".join(join_key_columns + feature_name_columns + timestamps)
+        (fields_with_aliases, aliases) = _get_fields_with_aliases(
+            fields=join_key_columns + feature_name_columns + timestamps,
+            field_mappings=data_source.field_mapping,
+        )
+
+        fields_as_string = ", ".join(fields_with_aliases)
+        aliases_as_string = ", ".join(aliases)
 
         start_date_str = _format_datetime(start_date)
         end_date_str = _format_datetime(end_date)
         query = f"""
                 SELECT
-                    {field_string}
+                    {aliases_as_string}
                     {f", {repr(DUMMY_ENTITY_VAL)} AS {DUMMY_ENTITY_ID}" if not join_key_columns else ""}
                 FROM (
-                    SELECT {field_string},
+                    SELECT {fields_as_string},
                     ROW_NUMBER() OVER({partition_by_join_key_string} ORDER BY {timestamp_desc_string}) AS feast_row_
                     FROM {from_expression} t1
                     WHERE {timestamp_field} BETWEEN TIMESTAMP('{start_date_str}') AND TIMESTAMP('{end_date_str}')
@@ -279,14 +286,19 @@ def pull_all_from_table_or_query(
         spark_session = get_spark_session_or_start_new_with_repoconfig(
             store_config=config.offline_store
         )
+        (fields_with_aliases, aliases) = _get_fields_with_aliases(
+            fields=join_key_columns + feature_name_columns + [timestamp_field],
+            field_mappings=data_source.field_mapping,
+        )
+
+        fields_with_alias_string = ", ".join(fields_with_aliases)
 
-        fields = ", ".join(join_key_columns + feature_name_columns + [timestamp_field])
         from_expression = data_source.get_table_query_string()
         start_date = start_date.astimezone(tz=timezone.utc)
         end_date = end_date.astimezone(tz=timezone.utc)
 
         query = f"""
-            SELECT {fields}
+            SELECT {fields_with_alias_string}
             FROM {from_expression}
             WHERE {timestamp_field} BETWEEN TIMESTAMP '{start_date}' AND TIMESTAMP '{end_date}'
         """

@@ -106,7 +106,8 @@ def _get_requested_feature_views_to_features_dict(
     on_demand_feature_views: List["OnDemandFeatureView"],
 ) -> Tuple[Dict["FeatureView", List[str]], Dict["OnDemandFeatureView", List[str]]]:
     """Create a dict of FeatureView -> List[Feature] for all requested features.
-    Set full_feature_names to True to have feature names prefixed by their feature view name."""
+    Set full_feature_names to True to have feature names prefixed by their feature view name.
+    """
 
     feature_views_to_feature_map: Dict["FeatureView", List[str]] = defaultdict(list)
     on_demand_feature_views_to_feature_map: Dict["OnDemandFeatureView", List[str]] = (
@@ -212,6 +213,28 @@ def _run_pyarrow_field_mapping(
     return table
 
 
+def _get_fields_with_aliases(
+    fields: List[str],
+    field_mappings: Dict[str, str],
+) -> Tuple[List[str], List[str]]:
+    """
+    Get a list of fields with aliases based on the field mappings.
+    """
+    for field in fields:
+        if "." in field and field not in field_mappings:
+            raise ValueError(
+                f"Feature {field} contains a '.' character, which is not allowed in field names. Use field mappings to rename fields."
+            )
+    fields_with_aliases = [
+        f"{field} AS {field_mappings[field]}" if field in field_mappings else field
+        for field in fields
+    ]
+    aliases = [
+        field_mappings[field] if field in field_mappings else field for field in fields
+    ]
+    return (fields_with_aliases, aliases)
+
+
 def _coerce_datetime(ts):
     """
     Depending on underlying time resolution, arrow to_pydict() sometimes returns pd
@@ -781,9 +804,11 @@ def _populate_response_from_feature_data(
     """
     # Add the feature names to the response.
     requested_feature_refs = [
-        f"{table.projection.name_to_use()}__{feature_name}"
-        if full_feature_names
-        else feature_name
+        (
+            f"{table.projection.name_to_use()}__{feature_name}"
+            if full_feature_names
+            else feature_name
+        )
         for feature_name in requested_features
     ]
     online_features_response.metadata.feature_names.val.extend(requested_feature_refs)

@@ -1828,3 +1828,51 @@ def test_apply_entity_to_sql_registry_and_reinitialize_sql_registry(test_registr
 
     updated_test_registry.teardown()
     test_registry.teardown()
+
+
+@pytest.mark.integration
+def test_commit_for_read_only_user():
+    fd, registry_path = mkstemp()
+    registry_config = RegistryConfig(path=registry_path, cache_ttl_seconds=600)
+    write_registry = Registry("project", registry_config, None)
+
+    entity = Entity(
+        name="driver_car_id",
+        description="Car driver id",
+        tags={"team": "matchmaking"},
+    )
+
+    project = "project"
+
+    # Register Entity without commiting
+    write_registry.apply_entity(entity, project, commit=False)
+    assert write_registry.cached_registry_proto
+    project_obj = write_registry.cached_registry_proto.projects[0]
+    assert project == Project.from_proto(project_obj).name
+    assert_project(project, write_registry, True)
+
+    # Retrieving the entity should still succeed
+    entities = write_registry.list_entities(project, allow_cache=True, tags=entity.tags)
+    entity = entities[0]
+    assert (
+        len(entities) == 1
+        and entity.name == "driver_car_id"
+        and entity.description == "Car driver id"
+        and "team" in entity.tags
+        and entity.tags["team"] == "matchmaking"
+    )
+
+    # commit from the original registry
+    write_registry.commit()
+
+    # Reconstruct the new registry in order to read the newly written store
+    with mock.patch.object(
+        Registry,
+        "commit",
+        side_effect=Exception("Read only users are not allowed to commit"),
+    ):
+        read_registry = Registry("project", registry_config, None)
+        entities = read_registry.list_entities(project, tags=entity.tags)
+        assert len(entities) == 1
+
+    write_registry.teardown()
@@ -0,0 +1,129 @@
+from datetime import datetime
+from unittest.mock import MagicMock, patch
+
+from feast.infra.offline_stores.contrib.spark_offline_store.spark import (
+    SparkOfflineStore,
+    SparkOfflineStoreConfig,
+)
+from feast.infra.offline_stores.contrib.spark_offline_store.spark_source import (
+    SparkSource,
+)
+from feast.infra.offline_stores.offline_store import RetrievalJob
+from feast.repo_config import RepoConfig
+
+
+@patch(
+    "feast.infra.offline_stores.contrib.spark_offline_store.spark.get_spark_session_or_start_new_with_repoconfig"
+)
+def test_pull_latest_from_table_with_nested_timestamp_or_query(mock_get_spark_session):
+    mock_spark_session = MagicMock()
+    mock_get_spark_session.return_value = mock_spark_session
+
+    test_repo_config = RepoConfig(
+        project="test_project",
+        registry="test_registry",
+        provider="local",
+        offline_store=SparkOfflineStoreConfig(type="spark"),
+    )
+
+    test_data_source = SparkSource(
+        name="test_nested_batch_source",
+        description="test_nested_batch_source",
+        table="offline_store_database_name.offline_store_table_name",
+        timestamp_field="nested_timestamp",
+        field_mapping={
+            "event_header.event_published_datetime_utc": "nested_timestamp",
+        },
+    )
+
+    # Define the parameters for the method
+    join_key_columns = ["key1", "key2"]
+    feature_name_columns = ["feature1", "feature2"]
+    timestamp_field = "event_header.event_published_datetime_utc"
+    created_timestamp_column = "created_timestamp"
+    start_date = datetime(2021, 1, 1)
+    end_date = datetime(2021, 1, 2)
+
+    # Call the method
+    retrieval_job = SparkOfflineStore.pull_latest_from_table_or_query(
+        config=test_repo_config,
+        data_source=test_data_source,
+        join_key_columns=join_key_columns,
+        feature_name_columns=feature_name_columns,
+        timestamp_field=timestamp_field,
+        created_timestamp_column=created_timestamp_column,
+        start_date=start_date,
+        end_date=end_date,
+    )
+
+    expected_query = """SELECT
+                    key1, key2, feature1, feature2, nested_timestamp, created_timestamp
+
+                FROM (
+                    SELECT key1, key2, feature1, feature2, event_header.event_published_datetime_utc AS nested_timestamp, created_timestamp,
+                    ROW_NUMBER() OVER(PARTITION BY key1, key2 ORDER BY event_header.event_published_datetime_utc DESC, created_timestamp DESC) AS feast_row_
+                    FROM `offline_store_database_name`.`offline_store_table_name` t1
+                    WHERE event_header.event_published_datetime_utc BETWEEN TIMESTAMP('2021-01-01 00:00:00.000000') AND TIMESTAMP('2021-01-02 00:00:00.000000')
+                ) t2
+                WHERE feast_row_ = 1"""  # noqa: W293
+
+    assert isinstance(retrieval_job, RetrievalJob)
+    assert retrieval_job.query.strip() == expected_query.strip()
+
+
+@patch(
+    "feast.infra.offline_stores.contrib.spark_offline_store.spark.get_spark_session_or_start_new_with_repoconfig"
+)
+def test_pull_latest_from_table_without_nested_timestamp_or_query(
+    mock_get_spark_session,
+):
+    mock_spark_session = MagicMock()
+    mock_get_spark_session.return_value = mock_spark_session
+
+    test_repo_config = RepoConfig(
+        project="test_project",
+        registry="test_registry",
+        provider="local",
+        offline_store=SparkOfflineStoreConfig(type="spark"),
+    )
+
+    test_data_source = SparkSource(
+        name="test_batch_source",
+        description="test_nested_batch_source",
+        table="offline_store_database_name.offline_store_table_name",
+        timestamp_field="event_published_datetime_utc",
+    )
+
+    # Define the parameters for the method
+    join_key_columns = ["key1", "key2"]
+    feature_name_columns = ["feature1", "feature2"]
+    timestamp_field = "event_published_datetime_utc"
+    created_timestamp_column = "created_timestamp"
+    start_date = datetime(2021, 1, 1)
+    end_date = datetime(2021, 1, 2)
+
+    # Call the method
+    retrieval_job = SparkOfflineStore.pull_latest_from_table_or_query(
+        config=test_repo_config,
+        data_source=test_data_source,
+        join_key_columns=join_key_columns,
+        feature_name_columns=feature_name_columns,
+        timestamp_field=timestamp_field,
+        created_timestamp_column=created_timestamp_column,
+        start_date=start_date,
+        end_date=end_date,
+    )
+
+    expected_query = """SELECT
+                    key1, key2, feature1, feature2, event_published_datetime_utc, created_timestamp
+
+                FROM (
+                    SELECT key1, key2, feature1, feature2, event_published_datetime_utc, created_timestamp,
+                    ROW_NUMBER() OVER(PARTITION BY key1, key2 ORDER BY event_published_datetime_utc DESC, created_timestamp DESC) AS feast_row_
+                    FROM `offline_store_database_name`.`offline_store_table_name` t1
+                    WHERE event_published_datetime_utc BETWEEN TIMESTAMP('2021-01-01 00:00:00.000000') AND TIMESTAMP('2021-01-02 00:00:00.000000')
+                ) t2
+                WHERE feast_row_ = 1"""  # noqa: W293
+
+    assert isinstance(retrieval_job, RetrievalJob)
+    assert retrieval_job.query.strip() == expected_query.strip()