solr update specific fields rather than entire document [closed]

Answer 1

Not the correct answer anymore. SOLR 4.0 supports the partial updates you are talking about. See http://solr.pl/en/2012/07/09/solr-4-0-partial-documents-update/

Answer 2

Nope. Solr doesn't allow updating a specific field.
You would need to update the document again with all the existing values and the changed values.
The Update basically is delete and add of the document.

Update

Solr does Allow Partial Updates with 4.0 @ http://solr.pl/en/2012/07/09/solr-4-0-partial-documents-update/

Answer 3

Atomic updates are possible in solr. Please refer https://wiki.apache.org/solr/UpdateJSON#Solr_4.0_Example