Hi, Thanks, I will look into options specified.
On Mon, Sep 26, 2016 at 4:35 PM, Alexandre Rafalovitch <arafa...@gmail.com> wrote: > Transformers do not see what's in the Solr index, they are too early > in the processing chain. > > You could probably do something by exporting that field's value, > caching it and injecting it back with transformer from that cache. > Messy but doable. > > UpdateRequestProcessor would be able to do it, but your request from > DIH is coming as a new document, not an update. So the old one would > be overidden. > > SOLR-9530 could be an answer to that, but it is just a design so far - > no implementation. You could write one yourself or see if showing > excitement on the JIRA and being ready to debug the patch would get > the committer's attention. > > > Regards, > Alex. > ---- > Newsletter and resources for Solr beginners and intermediates: > http://www.solr-start.com/ > > > On 26 September 2016 at 17:36, Selvam <s.selvams...@gmail.com> wrote: > > Hi All, > > > > We use DataImportHandler to import data from Redshift. We want to > overwrite > > some 250M existing records (that has around 350 columns) while retaining > > the field value of only one column in those 250M records. The reason is, > > that one column is a multi-valued and requires a costly query to build > that > > values again. > > > > I learned about Transformers, I am not sure if it is possible to get the > > old document value during that process. Any help would be appreciated. > > > > > > -- > > Regards, > > Selvam > -- Regards, Selvam KnackForge <http://knackforge.com>
