Merge branch 'branch-0.4.0' into 'branch-0.4.0'

fix a typo

See merge request megasearch/milvus!447

Former-commit-id: 989e96d5156de1f039d724eec19ca4bbd88b32cb

cpp/src/db/meta/MetaTypes.h

@@ -40,7 +40,7 @@ struct TableSchema {
     uint16_t dimension_ = 0;
     int64_t created_on_ = 0;
     int64_t flag_ = 0;
-    int32_t index_file_size_ = DEFAULT_INDEX_FILE_SIZE;
+    int64_t index_file_size_ = DEFAULT_INDEX_FILE_SIZE;
     int32_t engine_type_ = DEFAULT_ENGINE_TYPE;
     int32_t nlist_ = DEFAULT_NLIST;
     int32_t metric_type_ = DEFAULT_METRIC_TYPE;