You would end up with duplicate docs on the two shards. Solr is doing its doc-id lookup on the shards, not on other shards. Routing takes place before this step, so you're going to have two docs.
Best, Erick On Tue, Jul 1, 2014 at 9:42 AM, IJ <jay...@gmail.com> wrote: > 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.
