Recipes

Solr backup

How to copy all documents from one solr server to another.

from mysolr import Solr

PACKET_SIZE = 5000

solr_source = Solr('http://server1:8080/solr/')
solr_target = Solr('http://server2:8080/solr/')

# Get the number of documents of the source index
n_documents = solr_source.search(q='*:*', rows=0).total_results

for start in range(0, n_documents, PACKET_SIZE):
    resp = solr_source.search(q='*:*', rows=PACKET_SIZE, start=start)
    source_docs = resp.documents
    solr_target.update(source_docs)