On 11/13/22 20:44, Eashwar Natarajan wrote:
We have been using Solr 8 for quite a while.We wanted to migrate the data from solr standalone 8 to solr cloud 8. Is there a way to do it apart from reindexing. Please advise.
If your non-cloud index is not sharded but your cloud index is, then that would be very difficult. If both are sharded, you will have problems if the shard routing in the non-cloud setup is not 100% identical to the way SolrCloud does routing.
If both are unsharded, then you can do it by creating the collection in the cloud setup, shutting down all nodes in both setups, and replacing the data directory on each replica in the cloud nodes with the data directory from a non-cloud node, then starting all the Solr nodes back up.
Your best bet, regardless of whether there is any sharding, is to reindex from scratch. It is STRONGLY recommended that you always have a mechanism for doing a full reindex, because many of the changes you might make to the index config will require a full reindex.
Thanks, Shawn
