Thanks for the detailed answers!
On Thu, Aug 7, 2014 at 5:57 PM, Ryan Zezeski <r...@zinascii.com> wrote: > > On Aug 7, 2014, at 5:46 PM, David James <davidcja...@gmail.com> wrote: > > > - Is _version_ required? > > > It should not be required as the documentation says it is only needed for > real-time GET which Riak Search (Yokozuna) disables since Riak KV provides > the get/put implementation. > > > - I see SolrCloud mentioned in some documentation (see below)? Does > Riak Search use it? > > > RS does not make use of SolrCloud at all. It uses Solr’s Distributed > Search but that is something that existed well before SolrCloud. All > routing and replica administration is handled by Riak. Each Solr instance > (one per node) has no awareness of the other nodes except for the explicit > distributed queries sent by Riak. > > > - How does Riak Search handle optimistic locking? > > > It doesn’t use Solr’s optimistic locking at all. All key-value semantics > come from Riak itself. RS simply indexes an object’s values. > > > > See this comment on the default_schema.xml on Github: > > <!-- TODO: is this needed? --> > <field name="_version_" type="long" indexed="true" stored="true"/> > > > https://raw.githubusercontent.com/basho/yokozuna/develop/priv/default_schema.xml > > > Yes, I wrote that TODO. It is one of many that founds its way into 2.0.0 > :). You should run fine without this field if you create a custom schema. > > > > P.S. Per https://wiki.apache.org/solr/SchemaXml > > - _version_ [image: <!>] Solr4.0 <https://wiki.apache.org/solr/Solr4.0> - > This field is used for optimistic locking in SolrCloud > <http://wiki.apache.org/solr/SolrCloud> and it enables Real Time Get > <http://wiki.apache.org/solr/RealTimeGet>. If you remove it you must > also remove the transaction logging from solrconfig.xml, see Real Time > Get <http://wiki.apache.org/solr/RealTimeGet>. > > > Just to reiterate what I said above, RS disables the transaction logging > and thus there is no real time get. There is no reason for it since that > is what Riak itself provides. > > -Z > >
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