Hello! You can some find information about requirements of SolrCloud at http://wiki.apache.org/solr/SolrCloud . I don't know if _version_ is mentioned elsewhere.
As for Websolr - I'm afraid I can't say anything about the cause of those errors without seeing the exception. -- Regards, Rafał Kuć Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch - ElasticSearch > On Thu, Oct 18, 2012 at 12:09 AM, Rafał Kuć <r....@solr.pl> wrote: >> Hello! >> >> The _version_ field is needed by some of Solr 4.0 functionality like >> transaction log or partial documents update. If you want to use them, >> just update your schema.xml and put the _version_ field definition >> there. >> >> However if you don't want those, you can remove the transaction log >> configuration in your solrconfig.xml. However please remember that >> when using SolrCloud you'll need that field. >> > Thanks. Where is that bit documented? I don't see it on the Solr wiki: > http://wiki.apache.org/solr/SchemaXml > I do have a Solr 4 Beta index running on Websolr that does not have > such a field. It works, but throws many "Service Unavailable" and > "Communication Error" errors. Might the lack of the _version_ field be > the reason? > Thanks.