when read debug explain in solr, there 1 number following "fieldweight in", like:
<str name="2531072"> 3.1245635 = (match) weight( title:epic in 111
) [defaultsimilarity], result of: 3.1245635 = fieldweight in 111
, product of: 1.0 = tf(freq=1.0), freq of: 1.0 = termfreq=1.0 6.249127 = idf(docfreq=4, maxdocs=952) 0.5 = fieldnorm (doc=111)
</str> i wonder bold number means, how solr number? can understand freq, docfeq, maxdoc termfreq, confused number.
this number internal id of document , doesn't affect score. it's debugging info. mailing list of lucene gives this information.
