Atomic Update at Solrj For a Newly Added Schema Field

[Furkan KAMACI]

I use Solr 4.5.1 I have indexed some documents and decided to add a new
field to my schema after a time later. I want to use Atomic Updates for
that newly added field. I use Solrj for indexing. However due to there is
no field named as I've newly added Solr does not make an atomic update for
existing documents. I do not want to reindex my whole data. Any ideas for
it?