I second Toke’s recommendation to ensure you have a pure string-version of your
title.
For pure de-duplication you could also consider the lighter-weight
CollapseComponent
Instead of &group=true&group.field=title, use &fq={!collapse field=title_string}
See
https://cwiki.apache.org/confluence/display/solr/Collapse+and+Expand+Results
for more
--
Jan Høydahl, search solution architect
Cominvent AS - www.cominvent.com
> 3. nov. 2015 kl. 12.37 skrev Toke Eskildsen <t...@statsbiblioteket.dk>:
>
> On Tue, 2015-11-03 at 14:53 +0530, vishal raut wrote:
>> I have indexed various videos in solr which I have in my database. I want
>> to search for those video titles, but there can be duplicate video titles
>> as well (If the video is same but source is different, this will have
>> separate entry in solr). To remove those duplicate titles while searching,
>> I am using solr group on title.
>
> And you get "Too many values for UnInvertedField faceting on field."
>
> There is a fairly low (16M per segment or something like that) limit to
> the amount of unique values that can be uninverted. DocValues has a much
> higher limit (2 billion I think. At least it works with 600M+ for us).
>
> Add your titles to a StrField with docValues, the group on that.
>
> - Toke Eskildsen, State and University Library, Denmark
>
>
