所以所有的复制索引现在都已清除，我在重新索引时只剩下这些警告：
discourse=# REINDEX SCHEMA CONCURRENTLY public;
WARNING: cannot reindex invalid index "public.tags_pkey_ccnew" concurrently, skipping
WARNING: cannot reindex invalid index "public.index_tags_on_name_ccnew" concurrently, skipping
WARNING: cannot reindex invalid index "public.index_tags_on_lower_name_ccnew" concurrently, skipping
WARNING: cannot reindex invalid index "public.tags_pkey_ccnew1" concurrently, skipping
WARNING: cannot reindex invalid index "public.index_tags_on_name_ccnew1" concurrently, skipping
WARNING: cannot reindex invalid index "public.index_tags_on_lower_name_ccnew1" concurrently, skipping
WARNING: cannot reindex invalid index "pg_toast.pg_toast_309322_index_ccnew" concurrently, skipping
WARNING: cannot reindex invalid index "pg_toast.pg_toast_309322_index_ccnew1" concurrently, skipping
REINDEX
是否需要采取某些措施来消除这些警告，还是我们只能接受这些警告的存在？