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
Thanks,
Shawn
