Lets say I create a Solr Collection with multiple shards (say 2 shards) and set the value of "router.field" to a field called "CompanyName". Now - we all know that during Indexing Solr would compute a hash on the value indexed into the "CompanyName" and route to an appropriate shard.
Lets say I index a document into this Collection - and Solr routes the document into Shard 1 (based on the computed Hash). Now, lets say - I re-index the same document (same unique key) - but with a different value of the "CompanyName" - and lets say the Solr now determines that the document should route to Shard 2 - In such a situation - would solr delete the older version of the document from Shard 1 ? OR would I end up with two versions of the same Document (same unique key) in both shards ? My system allows updates to fields that I choose as the shard key. I definitely want the document to be moved from Shard 1 into Shard 2 when i perform the re-indexing. Would this work as expected ? OR should I be doing an explicit delete prior to re-indexing such documents ?? -- View this message in context: http://lucene.472066.n3.nabble.com/Does-Solr-move-documents-between-shards-when-the-value-of-the-shard-key-is-updated-tp4145043.html Sent from the Solr - User mailing list archive at Nabble.com.
