Fix async issues in namespace init

lightrag/kg/json_doc_status_impl.py

@@ -33,7 +33,7 @@ class JsonDocStatusStorage(DocStatusStorage):
     async def initialize(self):
         """Initialize storage data"""
         # check need_init must before get_namespace_data
-        need_init = try_initialize_namespace(self.namespace)
+        need_init = await try_initialize_namespace(self.namespace)
         self._data = await get_namespace_data(self.namespace)
         if need_init:
             loaded_data = load_json(self._file_name) or {}

lightrag/kg/json_kv_impl.py

@@ -29,7 +29,7 @@ class JsonKVStorage(BaseKVStorage):
     async def initialize(self):
         """Initialize storage data"""
         # check need_init must before get_namespace_data
-        need_init = try_initialize_namespace(self.namespace)
+        need_init = await try_initialize_namespace(self.namespace)
         self._data = await get_namespace_data(self.namespace)
         if need_init:
             loaded_data = load_json(self._file_name) or {}

lightrag/kg/shared_storage.py

@@ -355,7 +355,7 @@ async def get_all_update_flags_status() -> Dict[str, list]:
     return result
 
 
-def try_initialize_namespace(namespace: str) -> bool:
+async def try_initialize_namespace(namespace: str) -> bool:
     """
     Returns True if the current worker(process) gets initialization permission for loading data later.
     The worker does not get the permission is prohibited to load data from files.
@@ -365,15 +365,17 @@ def try_initialize_namespace(namespace: str) -> bool:
     if _init_flags is None:
         raise ValueError("Try to create nanmespace before Shared-Data is initialized")
 
-    if namespace not in _init_flags:
-        _init_flags[namespace] = True
+    async with get_internal_lock():
+        if namespace not in _init_flags:
+            _init_flags[namespace] = True
+            direct_log(
+                f"Process {os.getpid()} ready to initialize storage namespace: [{namespace}]"
+            )
+            return True
         direct_log(
-            f"Process {os.getpid()} ready to initialize storage namespace: [{namespace}]"
+            f"Process {os.getpid()} storage namespace already initialized: [{namespace}]"
         )
-        return True
-    direct_log(
-        f"Process {os.getpid()} storage namespace already initialized: [{namespace}]"
-    )
+
     return False