JVM-Memory has gone up from 3% to 17.1% On Fri, Aug 7, 2015 at 12:10 PM, Shawn Heisey <apa...@elyograg.org> wrote:
> On 8/7/2015 10:25 AM, naga sharathrayapati wrote: > > i have added docValues="true" to my existing schema and I have seen > > exponential increase in the size of the index. > > > > The reason in going with docValues is to improve the faceting query time. > > > > schema: > > <field name="abcdef" type="date" indexed="true" stored="true" > > multiValued="false" docValues="true"/> > > > > Is this ok? am i doing anything wrong in the schema? > > An exponential increase would REALLY surprise me. I have seen indexes > nearly double in size with the addition of docValues on the primary > search field. You are storing another complete copy of the original > value sent to Solr. It will be compressed if your Solr version is at > least 4.2, just like the stored value is in 4.1 and later. > > If you are only adding docValues to a date field, I would not expect > that to affect your index size very much at all, but if you are adding > them to large text fields, it would. > > Performance tweaks are nearly always a trade -- typically your space and > memory utilization goes up, and it runs faster. If you don't have > enough memory, then either performance will go down or the system will > stop working entirely. > > Thanks, > Shawn > >
