feat: Feast/IKV upgrade client version (#4200)

sdk/python/feast/infra/online_stores/contrib/ikv_online_store/ikv.py

@@ -82,9 +82,8 @@ def online_write_batch(
             progress: Function to be called once a batch of rows is written to the online store, used
                 to show progress.
         """
-        # update should have been called before
-        if self._writer is None:
-            return
+        self._init_writer(config=config)
+        assert self._writer is not None
 
         for entity_key, features, event_timestamp, _ in data:
             entity_id: str = compute_entity_id(
@@ -120,6 +119,8 @@ def online_read(
             item is the event timestamp for the row, and the second item is a dict mapping feature names
             to values, which are returned in proto format.
         """
+        self._init_reader(config=config)
+
         if not len(entity_keys):
             return []
 
@@ -174,7 +175,6 @@ def _decode_fields_for_primary_key(
 
         return dt, features
 
-    # called before any read/write requests are issued
     @log_exceptions_and_usage(online_store="ikv")
     def update(
         self,
@@ -199,7 +199,7 @@ def update(
             partial: If true, tables_to_delete and tables_to_keep are not exhaustive lists, so
                 infrastructure corresponding to other feature views should be not be touched.
         """
-        self._init_clients(config=config)
+        self._init_writer(config=config)
         assert self._writer is not None
 
         # note: we assume tables_to_keep does not overlap with tables_to_delete
@@ -223,7 +223,7 @@ def teardown(
             tables: Feature views whose corresponding infrastructure should be deleted.
             entities: Entities whose corresponding infrastructure should be deleted.
         """
-        self._init_clients(config=config)
+        self._init_writer(config=config)
         assert self._writer is not None
 
         # drop fields corresponding to this feature-view
@@ -269,20 +269,28 @@ def _create_document(
 
         return builder.build()
 
-    def _init_clients(self, config: RepoConfig):
-        """Initializes (if required) reader/writer ikv clients."""
-        online_config = config.online_store
-        assert isinstance(online_config, IKVOnlineStoreConfig)
-        client_options = IKVOnlineStore._config_to_client_options(online_config)
-
+    def _init_writer(self, config: RepoConfig):
+        """Initializes ikv writer client."""
         # initialize writer
         if self._writer is None:
+            online_config = config.online_store
+            assert isinstance(online_config, IKVOnlineStoreConfig)
+            client_options = IKVOnlineStore._config_to_client_options(online_config)
+
             self._writer = create_new_writer(client_options)
+            self._writer.startup()  # blocking operation
 
-        # initialize reader, iff mount_dir is specified
+    def _init_reader(self, config: RepoConfig):
+        """Initializes ikv reader client."""
+        # initialize reader
         if self._reader is None:
+            online_config = config.online_store
+            assert isinstance(online_config, IKVOnlineStoreConfig)
+            client_options = IKVOnlineStore._config_to_client_options(online_config)
+
             if online_config.mount_directory and len(online_config.mount_directory) > 0:
                 self._reader = create_new_reader(client_options)
+                self._reader.startup()  # blocking operation
 
     @staticmethod
     def _config_to_client_options(config: IKVOnlineStoreConfig) -> ClientOptions:

setup.py

@@ -127,7 +127,7 @@
 ]
 
 IKV_REQUIRED = [
-    "ikvpy>=0.0.23",
+    "ikvpy>=0.0.36",
 ]
 
 HAZELCAST_REQUIRED = [