fix: add delete() for cached property

jina/executors/indexers/keyvalue.py

@@ -210,13 +210,13 @@ def update(
         keys, values = self._filter_nonexistent_keys_values(
             keys, values, self.query_handler.header.keys()
         )
+        del self.query_handler
+        self.handler_mutex = False
         if keys:
             self._delete(keys)
             self.add(keys, values)
 
     def _delete(self, keys: Iterable[str]) -> None:
-        self.query_handler.close()
-        self.handler_mutex = False
         for key in keys:
             self.write_handler.header.write(
                 np.array(
@@ -229,9 +229,6 @@ def _delete(self, keys: Iterable[str]) -> None:
                     ],
                 ).tobytes()
             )
-
-            if self.query_handler:
-                del self.query_handler.header[key]
             self._size -= 1
 
     def delete(self, keys: Iterable[str], *args, **kwargs) -> None:
@@ -242,6 +239,8 @@ def delete(self, keys: Iterable[str], *args, **kwargs) -> None:
         :param kwargs: keyword arguments
         """
         keys = self._filter_nonexistent_keys(keys, self.query_handler.header.keys())
+        del self.query_handler
+        self.handler_mutex = False
         if keys:
             self._delete(keys)
 

jina/executors/indexers/vector.py

@@ -93,8 +93,8 @@ def _post_clean_memmap(self, valid):
         self.key_bytes = valid_key_bytes
         self._size = len(valid)
         self.valid_indices = valid
-        del self.__dict__['CACHED__int2ext_id']
-        del self.__dict__['CACHED__ext2int_id']
+        del self._int2ext_id
+        del self._ext2int_id
 
     def _clean_memmap(self):
         # clean up the underlying matrix of entries marked for deletion
@@ -105,7 +105,7 @@ def _clean_memmap(self):
             self.handler_mutex = False
         # force the raw_ndarray (underlying matrix) to re-read from disk
         # (needed when there were writing ops to be flushed)
-        del self.__dict__['CACHED__raw_ndarray']
+        del self._raw_ndarray
         filtered = self._raw_ndarray[self.valid_indices]
         # we need an intermediary file
         tmp_path = self.index_abspath + 'tmp'
@@ -123,7 +123,7 @@ def _clean_memmap(self):
         os.remove(self.index_abspath)
         os.rename(tmp_path, self.index_abspath)
         # force it to re-read again from the new file
-        del self.__dict__['CACHED__raw_ndarray']
+        del self._raw_ndarray
 
     def __getstate__(self):
         # called on pickle save

jina/helper.py

@@ -972,6 +972,13 @@ def __get__(self, obj, cls):
         value = obj.__dict__[f'CACHED_{self.func.__name__}'] = self.func(obj)
         return value
 
+    def __delete__(self, obj):
+        cached_value = obj.__dict__.get(f'CACHED_{self.func.__name__}', None)
+        if cached_value is not None:
+            if hasattr(cached_value, 'close'):
+                cached_value.close()
+            del obj.__dict__[f'CACHED_{self.func.__name__}']
+
 
 def get_now_timestamp():
     """

tests/unit/executors/indexers/test_binary_indexer.py

@@ -163,7 +163,7 @@ def test_binarypb_update_twice(test_metas, delete_on_dump):
 
 # benchmark only
 @pytest.mark.skipif(
-    'GITHUB_WORKFLOW' in os.environ, reason='skip the network test on github workflow'
+    'GITHUB_WORKFLOW' in os.environ, reason='skip the benchmark test on github workflow'
 )
 @pytest.mark.parametrize('delete_on_dump', [True, False])
 def test_binarypb_benchmark(test_metas, delete_on_dump):