2. "it depends". Solr will try to do the most efficient thing possible. If _all_ the fields are docValues, it will return the stored values from the docValues structure. This prevents a disk seek and decompress cycle.
However, if even one field is docValues=false Solr will by default return the stored values. For the multiValued case, you can explicitly tell Solr to return the docValues field. Best, Erick On Tue, Nov 6, 2018 at 1:46 AM Yasufumi Mizoguchi <yasufumi0...@gmail.com> wrote: > > Hi, > > > 1. For schema version 1.6, useDocValuesAsStored=true is default, so there > > is no need to explicitly set it in schema.xml? > > Yes. > > > 2. With useDocValuesAsStored=true and the following definition, will Solr > > retrieve id from docValues instead of stored field? > > No. > AFAIK, if you define both docValues="true" and stored="true" in your > schema, > Solr tries to retrieve stored value. > (Except using streaming expressions or /export handler etc... > See: > https://lucene.apache.org/solr/guide/6_6/docvalues.html#DocValues-EnablingDocValues > ) > > Thanks, > Yasufumi > > > 2018年11月6日(火) 9:54 Wei <weiwan...@gmail.com>: > > > Hi, > > > > I have a few questions about using the useDocValuesAsStored option to > > retrieve field from docValues: > > > > 1. For schema version 1.6, useDocValuesAsStored=true is default, so there > > is no need to explicitly set it in schema.xml? > > > > 2. With useDocValuesAsStored=true and the following definition, will Solr > > retrieve id from docValues instead of stored field? if fl= id, title, > > score, both id and title are single value field: > > > > <field name="id" type="string" indexed="true" stored="true" > > docValues="true" required="true"/> > > > > <field name="title" type="string" indexed="true" stored="true" > > docValues="true" required="true"/> > > > > Do I need to have all fields stored="false" docValues="true" to make solr > > retrieve from docValues only? I am using Solr 6.6. > > > > Thanks, > > Wei > >
