Thanks Hoss, Yes it is a distributed query.
Tom On Fri, Jan 25, 2013 at 2:32 PM, Chris Hostetter <hossman_luc...@fucit.org>wrote: > > : I have a one term query: "ocr:aardvark" When I look at the explain > : output, for some matches the queryNorm and fieldWeight are shown and for > : some matches only the "weight" is shown with no query norm. (See below) > > It looks like this is from a distributed query, correct? > > Explanation's generally exlude things that don't wind up impacting the > query -- so for example, no "query boost" section exists when he boost is > "1.0" and doesn't affect the multiplication. > > In your specific case i suspect the "queryWeight" section (which includes > the queryNorm) is being excluded for some documents if/when it's value is > "1.0" > > The reason the queryWeight is probably 1.0 for some documents, but clearly > not all, goes back to my question about this being a distributed query -- > note the difference in maxDoc and docFreq numbers used in computing the > idf for the same term in two differnet documents... > > 0.4395488 = (MATCH) fieldWeight(ocr:aardvark in 504374), product of: > ... > 7.4521165 = idf(docFreq=1328, maxDocs=842643) > > 0.43645293 = (MATCH) weight(ocr:aardvark in 380212), product of: > ... > 7.3996296 = idf(docFreq=1550, maxDocs=933116) > > ...so in one shard the queryWeight winds up being "1.0" and gets left out > of the explanation for conciseness, but in another shard the queryWeight > winds up being "0.99999994" and is included in the explanation. > > > -Hoss >
