feast-dev · arose26 · Aug 18, 2026
@@ -142,7 +142,7 @@ class VersionedOnlineReadNotSupported(FeastError):
     def __init__(self, store_name: str, version: int):
         super().__init__(
             f"Versioned feature reads (@v{version}) are not yet supported by {store_name}. "
-            f"Currently only SQLite, PostgreSQL, MySQL, FAISS, Redis, and DynamoDB support version-qualified feature references. "
+            f"Currently only SQLite, PostgreSQL, MySQL, FAISS, Redis, DynamoDB, Milvus, and Couchbase support version-qualified feature references. "
         )
 
 

@@ -17,6 +17,7 @@
 
 from feast import Entity, FeatureView, RepoConfig
 from feast.infra.key_encoding_utils import serialize_entity_key
+from feast.infra.online_stores.helpers import compute_table_id
 from feast.infra.online_stores.online_store import OnlineStore
 from feast.protos.feast.types.EntityKey_pb2 import EntityKey as EntityKeyProto
 from feast.protos.feast.types.Value_pb2 import Value as ValueProto
@@ -105,8 +106,7 @@ def online_write_batch(
             RuntimeWarning,
         )
         project = config.project
-        scope_name = f"{project}_{table.name}_scope"
-        collection_name = f"{project}_{table.name}_collection"
+        scope_name, collection_name = _scope_and_collection(config, table)
         collection = self._get_conn(config, scope_name, collection_name)
 
         for entity_key, values, timestamp, created_ts in data:
@@ -171,9 +171,7 @@ def online_read(
             RuntimeWarning,
         )
         project = config.project
-
-        scope_name = f"{project}_{table.name}_scope"
-        collection_name = f"{project}_{table.name}_collection"
+        scope_name, collection_name = _scope_and_collection(config, table)
 
         collection = self._get_conn(config, scope_name, collection_name)
 
@@ -239,11 +237,8 @@ def update(
             "Some functionality may still be unstable so functionality can change in the future.",
             RuntimeWarning,
         )
-        project = config.project
-
         for table in tables_to_keep:
-            scope_name = f"{project}_{table.name}_scope"
-            collection_name = f"{project}_{table.name}_collection"
+            scope_name, collection_name = _scope_and_collection(config, table)
             self._get_conn(config, scope_name, collection_name)
             cm = self.bucket.collections()
 
@@ -288,11 +283,8 @@ def teardown(
             "Some functionality may still be unstable so functionality can change in the future.",
             RuntimeWarning,
         )
-        project = config.project
-
         for table in tables:
-            scope_name = f"{project}_{table.name}_scope"
-            collection_name = f"{project}_{table.name}_collection"
+            scope_name, collection_name = _scope_and_collection(config, table)
             self._get_conn(config, scope_name, collection_name)
             cm = self.bucket.collections()
             try:
@@ -302,6 +294,21 @@ def teardown(
                 logger.error(f"Error removing collection or scope: {e}")
 
 
+def _scope_and_collection(config: RepoConfig, table: FeatureView) -> Tuple[str, str]:
+    """Couchbase scope and collection backing a feature view.
+
+    Built on ``compute_table_id``, so with
+    ``registry.enable_online_feature_view_versioning`` enabled each version gets its
+    own scope and collection (``{project}_{name}_v2_scope``). Document ids stay
+    unversioned: a collection is already a namespace, so partitioning at the
+    collection level is enough to keep versions from colliding.
+    """
+    base = compute_table_id(
+        config.project, table, config.registry.enable_online_feature_view_versioning
+    )
+    return f"{base}_scope", f"{base}_collection"
+
+
 def _document_id(
     project: str, table: FeatureView, entity_key_str: str, feature_name: str
 ) -> str:

@@ -315,6 +315,10 @@ def _is_versioned_read_supported(self) -> bool:
                 "feast.infra.online_stores.milvus_online_store.milvus",
                 "MilvusOnlineStore",
             ),
+            (
+                "feast.infra.online_stores.couchbase_online_store.couchbase",
+                "CouchbaseOnlineStore",
+            ),
         ):
             try:
                 import importlib

@@ -0,0 +1,140 @@
+"""Unit tests for Couchbase online store feature view versioning."""
+
+from datetime import timedelta
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from feast import Entity, FeatureView
+from feast.field import Field
+from feast.types import Float32
+from feast.value_type import ValueType
+
+pytest.importorskip("couchbase")
+
+from feast.infra.online_stores.couchbase_online_store.couchbase import (  # noqa: E402
+    CouchbaseOnlineStore,
+    _scope_and_collection,
+)
+
+
+def _make_feature_view(name="driver_stats", version_number=None, version_tag=None):
+    entity = Entity(
+        name="driver_id", join_keys=["driver_id"], value_type=ValueType.INT64
+    )
+    fv = FeatureView(
+        name=name,
+        entities=[entity],
+        ttl=timedelta(days=1),
+        schema=[Field(name="trips_today", dtype=Float32)],
+    )
+    if version_number is not None:
+        fv.current_version_number = version_number
+    if version_tag is not None:
+        fv.projection.version_tag = version_tag
+    return fv
+
+
+def _make_config(project="test_project", versioning=False):
+    config = MagicMock()
+    config.project = project
+    config.entity_key_serialization_version = 2
+    config.registry.enable_online_feature_view_versioning = versioning
+    return config
+
+
+class TestScopeAndCollection:
+    def test_no_versioning(self):
+        scope, collection = _scope_and_collection(
+            _make_config(versioning=False), _make_feature_view()
+        )
+        assert scope == "test_project_driver_stats_scope"
+        assert collection == "test_project_driver_stats_collection"
+
+    def test_versioning_disabled_ignores_version(self):
+        """A version on the feature view must not change names while the flag is off."""
+        scope, collection = _scope_and_collection(
+            _make_config(versioning=False), _make_feature_view(version_number=2)
+        )
+        assert scope == "test_project_driver_stats_scope"
+        assert collection == "test_project_driver_stats_collection"
+
+    def test_versioning_enabled_with_version(self):
+        scope, collection = _scope_and_collection(
+            _make_config(versioning=True), _make_feature_view(version_number=2)
+        )
+        assert scope == "test_project_driver_stats_v2_scope"
+        assert collection == "test_project_driver_stats_v2_collection"
+
+    def test_projection_version_tag_takes_priority(self):
+        scope, _ = _scope_and_collection(
+            _make_config(versioning=True),
+            _make_feature_view(version_number=1, version_tag=3),
+        )
+        assert scope == "test_project_driver_stats_v3_scope"
+
+    def test_version_zero_no_suffix(self):
+        scope, _ = _scope_and_collection(
+            _make_config(versioning=True), _make_feature_view(version_number=0)
+        )
+        assert scope == "test_project_driver_stats_scope"
+
+    def test_versions_do_not_collide(self):
+        config = _make_config(versioning=True)
+        v1, _ = _scope_and_collection(config, _make_feature_view(version_number=1))
+        v2, _ = _scope_and_collection(config, _make_feature_view(version_number=2))
+        assert v1 != v2
+
+
+class TestVersionedNamesReachCouchbase:
+    """The resolved names must be what the store actually connects with."""
+
+    @pytest.mark.parametrize(
+        "versioning, expected_scope",
+        [
+            (False, "test_project_driver_stats_scope"),
+            (True, "test_project_driver_stats_v2_scope"),
+        ],
+    )
+    def test_update_creates_the_versioned_scope(self, versioning, expected_scope):
+        store = CouchbaseOnlineStore()
+        config = _make_config(versioning=versioning)
+        fv = _make_feature_view(version_number=2)
+
+        with patch.object(CouchbaseOnlineStore, "_get_conn") as get_conn:
+            store.bucket = MagicMock()
+            store.update(config, [], [fv], [], [], partial=False)
+
+            get_conn.assert_called_once_with(
+                config, expected_scope, expected_scope.replace("_scope", "_collection")
+            )
+            store.bucket.collections().create_scope.assert_called_once_with(
+                expected_scope
+            )
+
+    def test_teardown_drops_the_versioned_scope(self):
+        store = CouchbaseOnlineStore()
+        config = _make_config(versioning=True)
+        fv = _make_feature_view(version_number=2)
+
+        with patch.object(CouchbaseOnlineStore, "_get_conn"):
+            store.bucket = MagicMock()
+            store.teardown(config, [fv], [])
+
+            store.bucket.collections().drop_scope.assert_called_once_with(
+                "test_project_driver_stats_v2_scope"
+            )
+
+
+class TestVersionedReadSupport:
+    def test_couchbase_is_allowlisted_for_versioned_reads(self):
+        """Couchbase's online_read honours the contract, so it must not raise."""
+        store = CouchbaseOnlineStore()
+        store._versioned_read_supported = None
+        assert store._is_versioned_read_supported() is True
+
+    def test_versioned_ref_does_not_raise(self):
+        store = CouchbaseOnlineStore()
+        store._versioned_read_supported = None
+        fv = _make_feature_view(version_tag=2)
+        store._check_versioned_read_support([(fv, ["trips_today"])])