I have a use case where we only need to append some fields to a document.
To retrieve the full representation is very expensive but I can easily get
the deltas. Is it possible to just add fields to an existing Solr
document? I experimented with using overwrite=false, but that resulted in
two documents with the same uniqueKey in the index (which makes sense). Is
there a way to accomplish what I'm looking to do in Solr? My fields aren't
all stored and think it will be too expensive for me to make that change.
Any thoughts would be really appreciated.
