Yes you are right. In fact, a simple work around, before Elasticsearch coming out with this feature in their 2.x releases, was to review mappings and what goes

Yes you are right. In fact, a simple work around, before Elasticsearch coming out with this feature in their 2.x releases, was to review mappings and what goes in Elasticsearch. And we got careless about that and shot ourselves in the foot. We learned it the hard way.