If there are only 100'000 documents dump all document ids and make diff If you're using linux based system you can just use simple tools to do it. Something like that can be helpful
curl "http://your.hostA:port/solr/index/select?*:*&fl=id&wt=csv" > /tmp/idsA curl "http://your.hostB:port/solr/index/select?*:*&fl=id&wt=csv" > /tmp/idsB diff /tmp/idsA /tmp/idsB | grep "<\|>" | awk '{print $2;}' | sed 's/\(.*\)/<id>\1<\/id>/g' > /tmp/ids_to_delete.xml Now you have file. Now you can just add to that file "<delete>" and "</detele>" and upload that file into solr using curl curl -X POST -d @/tmp/ids_to_delete.xml "http://your.hostA:port /solr/index/upadte" On Tue, Apr 17, 2012 at 2:09 PM, nutchsolruser <nutchsolru...@gmail.com>wrote: > I'm Also seeking solution for similar problem. > > -- > View this message in context: > http://lucene.472066.n3.nabble.com/Difference-between-two-solr-indexes-tp3916328p3917050.html > Sent from the Solr - User mailing list archive at Nabble.com. >