On 9/18/2018 4:03 AM, zhenyuan wei wrote:
Does solr support rollback or any method to do the same job？ Like update/add/delete a document, can I rollback them？
With SolrCloud, rollback is not supported. This is because a typical SolrCloud install spreads the index across multiple servers. Each server has no idea what the other servers are doing as far as indexing. So rollback is disabled in cloud mode.
In standalone mode where each index core is a separate entity with no connection to any others, you can do a rollback ... but it will NOT be the document you just added/deleted/changed, it will be *EVERY* change since the last searcher was opened. Solr does not support transactions like a database does.
https://lucene.apache.org/solr/guide/7_4/uploading-data-with-index-handlers.html#rollback-operations Thanks, Shawn
