Hi David, Yes, I do have this field "_root_" in the schema.
<field name="_root_" type="string" indexed="true" stored="false" docValues="false" /> However, I don't think I have use the field, and there is no difference in the indexing speed after I remove the field. Regards, Edwin On Wed, 3 Apr 2019 at 22:57, David Smiley <david.w.smi...@gmail.com> wrote: > Hi Edwin, > > I'd like to rule something out. Does your schema define a field "_root_"? > If you don't have nested documents then remove it. It's presence adds > indexing weight in 8.0 that was not there previously. I'm not sure how > much though; I've hoped small but who knows. > > ~ David Smiley > Apache Lucene/Solr Search Developer > http://www.linkedin.com/in/davidwsmiley > > > On Tue, Apr 2, 2019 at 10:17 PM Zheng Lin Edwin Yeo <edwinye...@gmail.com> > wrote: > > > Hi, > > > > I am setting up the latest Solr 8.0.0, and I am re-indexing the data from > > scratch in Solr 8.0.0 > > > > However, I found that the indexing speed is slower in Solr 8.0.0, as > > compared to the earlier version like Solr 7.7.1. I have not changed the > > schema.xml and solrconfig.xml yet, just did a change of the > > luceneMatchVersion in solrconfig.xml to 8.0.0 > > uceneMatchVersion>8.0.0</luceneMatchVersion> > > > > On average, the speed is about 40% to 50% slower. For example, the > indexing > > speed was about 17 mins in Solr 7.7.1, but now it takes about 25 mins to > > index the same set of data. > > > > What could be the reason that causes the indexing to be slower in Solr > > 8.0.0? > > > > Regards, > > Edwin > > >
