Allow tiledb_config to acquire lock in native_context

apis/python/src/tiledbsoma/_tdb_handles.py

@@ -59,14 +59,14 @@ def open(
     soma_object = clib.SOMAObject.open(
         uri, open_mode, context.native_context, (0, timestamp_ms)
     )
-    
+
     # Avoid creating a TileDB-Py Ctx unless necessary
     obj_type = (
         soma_object.type
         if soma_object is not None
         else tiledb.object_type(uri, ctx=context.tiledb_ctx)
     )
-    
+
     if not obj_type:
         raise DoesNotExistError(f"{uri!r} does not exist")
 
@@ -80,7 +80,7 @@ def open(
         "array",
     ):
         return ArrayWrapper.open(uri, mode, context, timestamp)
-    
+
     if obj_type in (
         "SOMACollection",
         "SOMAExperiment",

apis/python/src/tiledbsoma/options/_soma_tiledb_context.py

@@ -132,7 +132,7 @@ def __init__(
         self._timestamp_ms = _maybe_timestamp_ms(timestamp)
 
         """Lazily construct clib.SOMAContext."""
-        self._native_context = None
+        self._native_context: Optional[clib.SOMAContext] = None
 
     @property
     def timestamp_ms(self) -> Optional[int]:
@@ -155,10 +155,14 @@ def timestamp(self) -> Optional[datetime.datetime]:
     def native_context(self) -> clib.SOMAContext:
         """The C++ SOMAContext for this SOMA context."""
         with self._lock:
-            if self._native_context is None:
-                self._native_context = clib.SOMAContext(
-                    {k: str(self.tiledb_config[k]) for k in self.tiledb_config}
-                )
+            if self._native_context is not None:
+                return self._native_context
+
+        # tiledb_config also acquires the lock so we must first release it and
+        # then reacquire it
+        cfg = self.tiledb_config
+        with self._lock:
+            self._native_context = clib.SOMAContext({k: str(cfg[k]) for k in cfg})
             return self._native_context
 
     @property