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From Juan Antonio Farré Basurte (JIRA) <>
Subject [jira] [Commented] (SOLR-2632) Highlighting does not work for embedded boost query that boosts a dismax query
Date Mon, 04 Jul 2011 13:55:22 GMT


Juan Antonio Farré Basurte commented on SOLR-2632:

Ok, now I get much better what is going on, thanks for the explanation.
What I'm not sure is about the conclusion. Is this a bug that should be corrected?
Sounds like that to me, and in fact I don't see any workaround, except using bf instead of
boost, but then you get an additive boost instead of a multiplicative one.

> Highlighting does not work for embedded boost query that boosts a dismax query
> ------------------------------------------------------------------------------
>                 Key: SOLR-2632
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>          Components: highlighter
>    Affects Versions: 1.4.1, 3.2, 3.3
>         Environment: Linux.
> Reproduced in different machines with different Linux distributions and different JDK's.
> Solr 3.3 and Lucidworks for solr 1.4.1 and 3.2.
>            Reporter: Juan Antonio Farré Basurte
>            Priority: Minor
>              Labels: _query_, boost, dismax, edismax, embedded, highlighting, hl.fl,
> I need to issue a dismax query, with date boost (I'd like to use the multiplicative boost
provided by boost queries) and also filtering for other fields with too many possible distinct
values to fit in a filter query. To achieve this, I use the boost query as a nested query
using the pseudofield _query_. I also need highlighting for the fields used in the dismax
query, but highlighting does not work. If I just use the boosted dismax query without embedding
it inside another query, it works correctly. If I use bf instead of a boost query, and embed
directly the dismax query, it works too, but hl.fl needs to be specified.
> It's a bit complicated to explain, so, I'll give examples using the example data that
comes with solr (the problem is reproducible in the example solr distribution, not only in
my concrete project).
> http://localhost:8983/solr/select?q=%2binStock:true%20%2b_query_:%22{!boost%20b=$dateboost%20v=$qq%20defType=dismax}%22&qq=test&qf=name&dateboost=recip%28ms%28NOW,last_modified%29,3.16e-11,1,1%29&hl=true&hl.fl=name
> For this query, highlighting does not work. Specifying hl.fl or not, does not influence
the result. The result is:
> <lst name="highlighting">
>   <lst name="GB18030TEST"/>
>   <lst name="UTF8TEST"/>
> </lst>
> http://localhost:8983/solr/select?q=_query_:%22{!boost%20b=$dateboost%20v=$qq%20defType=dismax}%22&qq=test&qf=name&dateboost=recip%28ms%28NOW,last_modified%29,3.16e-11,1,1%29&hl=true&hl.fl=name
> This doesn't work either. Same result.
> http://localhost:8983/solr/select?q={!boost b=$dateboost v=$qq defType=dismax}&qq=test&qf=name&dateboost=recip(ms(NOW,last_modified),3.16e-11,1,1)&hl=true
> In this case, hightlighting works correctly:
> <lst name="highlighting">
>   <lst name="GB18030TEST">
>     <arr name="name">
>       <str><em>Test</em> with some GB18030 encoded characters</str>
>     </arr>
>   </lst>
>   <lst name="UTF8TEST">
>     <arr name="name">
>       <str><em>Test</em> with some UTF-8 encoded characters</str>
>     </arr>
>   </lst>
> </lst>
> http://localhost:8983/solr/select?q=%2BinStock:true%20%2B_query_:%22{!dismax%20v=$qq}%22&qq=test&qf=name&bf=recip%28ms%28NOW,last_modified%29,3.16e-11,1,1%29&hl=true&hl.fl=name
> This also works. Same result as before. But in this case hl.fl is needed. Without it,
highlighting does not work, either.
> Thanks.

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