On 8/11/2017 2:52 AM, SOLR4189 wrote: > Yes, only because I'm seeing different results. > > For example, changing *WordDelimiterFilterFactory *to > *WordDelimiterGraphFilterFactory * can change order of docs? ( > http://lucene.apache.org/core//6_5_1/analyzers-common/index.html?deprecated-list.html > <http://lucene.apache.org/core//6_5_1/analyzers-common/index.html?deprecated-list.html> > > )
I can't say for sure, but if that difference changes what parts of your query match or don't match, that is very likely to affect document scores. > For building index I tried 2 ways: 1) Dataimport from SOLR-4 to SOLR-6 and > 2) IndexUpgraderTool > And in both ways order of docs is different. If you are changing things like WordDelimiterFilterFactory to the graph version, you'll definitely want to reindex. The IndexUpgrader tool is not a reindex. If the Solr 4 index meets the requirements of having all relevant fields stored, then doing a dataimport from 4 to 6 would be the same as a reindex. Thanks, Shawn
