如何在Elasticsearch中使用新变量更新索引？

I have an index 'user' which has a mapping with field of "first", "last", and "email". The fields with names get indexed at one point, and then the field with the email gets indexed at a separate point. I want these indices to have the same id though, corresponding to one user_id parameter. So something like this: I have an index 'user' which has a mapping with