[skip ci] fix mishards error when invoking load_collection (#4569)

Signed-off-by: yinghao.zou <yinghao.zou@zilliz.com>

shards/mishards/service_handler.py

@@ -571,11 +571,14 @@ class ServiceHandler(milvus_pb2_grpc.MilvusServiceServicer):
 
     @mark_grpc_method
     def PreloadCollection(self, request, context):
-        _collection_name, _partition_tags = Parser.parse_proto_PreloadCollectionParam(request)
+        _status, _pack = Parser.parse_proto_PreloadCollectionParam(request)
+
+        if not _status.OK():
+            return status_pb2.Status(error_code=_status.code,
+                                     reason=_status.message)
+
+        _collection_name, _partition_tags = _pack
 
-        # if not _status.OK():
-        #     return status_pb2.Status(error_code=_status.code,
-        #                              reason=_status.message)
         logger.info('PreloadCollection {} | {}'.format(_collection_name, _partition_tags))
         _status = self._preload_collection(_collection_name, _partition_tags)
         return status_pb2.Status(error_code=_status.code,

shards/requirements.txt

@@ -15,7 +15,7 @@ pyasn1==0.4.7
 pyasn1-modules==0.2.6
 pylint==2.5.0
 #pymilvus==0.2.14
-pymilvus-test==0.3.35
+pymilvus-test==0.3.37
 pyparsing==2.4.0
 pytest==4.6.3
 pytest-level==0.1.1