Shawn, Awesome. Exactly something I am looking for.
Thanks! Ming On Thu, Feb 14, 2013 at 12:00 PM, Shawn Heisey <s...@elyograg.org> wrote: > On 2/14/2013 12:46 PM, Mingfeng Yang wrote: > >> I have a few Solr indexes, each with 20-200 millions documents, which were >> indexed by querying multiple PostgreSQL databases. If I do rebuild the >> index by the same way, it would take a few months, because the PostgresSQL >> query is slow. >> >> Now, I need to do the following changes to all indexes. >> 1. delete a couple fields from the Solr index >> 2. add a couple new fields >> 3. change the type of one field from string to int >> >> Luckily, all fields were "indexed and stored". My plan is to query an >> old >> index, and get values for all fields, and then add them into new index. >> > > Using the DataImportHandler with SolrEntityProcessor is probably your best > bet. I believe you would want to avoid updating the source index while > using this. > > http://wiki.apache.org/solr/**DataImportHandler#**SolrEntityProcessor<http://wiki.apache.org/solr/DataImportHandler#SolrEntityProcessor> > > Thanks, > Shawn > >
