It'd take some work to do that. Years ago I recall Etsy did a POC and shared their experience at Lucene/Solr Revolution in Washington DC; I attended the presentation with great interest. One of the major obstacles, if I recall, was the Collector needs to support this mode of operation, and in particular Solr's means of flipping bits in a big bitset to accumulate the DocSet had to be careful so that multiple threads don't try to overwrite the same underlying "long" in the long[].
~ David Smiley Apache Lucene/Solr Search Developer http://www.linkedin.com/in/davidwsmiley On Mon, Aug 26, 2019 at 7:02 AM Aghasi Ghazaryan <aghasi.ghazar...@picsart.com.invalid> wrote: > Hi, > > Lucene's IndexSearcher > < > http://lucene.apache.org/core/8_0_0/core/org/apache/lucene/search/IndexSearcher.html#IndexSearcher-org.apache.lucene.index.IndexReaderContext-java.util.concurrent.ExecutorService- > > > supports > running searches for each segment separately, using the provided > ExecutorService. > I wonder why SolrIndexSearcher does not support the same as it may improve > queries performance a lot? > > Thanks, looking forward to hearing from you. > > Regards > Aghasi Ghazaryan >
