Some highlighted snippets aren't being returned
Hi Everyone,
I'm facing an issue in which my solr query is returning highlighted snippets
for some, but not all results. For reference, I'm searching through an index
that contains web crawls of human-rights-related websites. I'm running solr as
a webapp under Tomcat and I've included the query's solr params from the Tomcat
log:
...
webapp=/solr-4.2
path=/select
params={facet=true&sort=score+desc&group.limit=10&spellcheck.q=Unangan&f.mimetype_code.facet.limit=7&hl.simple.pre=&q.alt=*:*&f.organization_type__facet.facet.limit=6&f.language__facet.facet.limit=6&hl=true&f.date_of_capture_.facet.limit=6&group.field=original_url&hl.simple.post=&facet.field=domain&facet.field=date_of_capture_&facet.field=mimetype_code&facet.field=geographic_focus__facet&facet.field=organization_based_in__facet&facet.field=organization_type__facet&facet.field=language__facet&facet.field=creator_name__facet&hl.fragsize=600&f.creator_name__facet.facet.limit=6&facet.mincount=1&qf=text^1&hl.fl=contents&hl.fl=title&hl.fl=original_url&wt=ruby&f.geographic_focus__facet.facet.limit=6&defType=edismax&rows=10&f.domain.facet.limit=6&q=Unangan&f.organization_based_in__facet.facet.limit=6&q.op=AND&group=true&hl.usePhraseHighlighter=true}
hits=8 status=0 QTime=108
...
For the query above (which can be simplified to say: find all documents that
contain the word "unangan" and return facets, highlights, etc.), I get five
search results. Only three of these are returning highlighted snippets.
Here's the "highlighting" portion of the solr response (note: printed in ruby
notation because I'm receiving this response in a Rails app):
"highlighting"=>
{"20100602195444/http://www.kontras.org/uu_ri_ham/UU%20Nomor%2023%20Tahun%202002%20tentang%20Perlindungan%20Anak.pdf"=>
{},
"20100902203939/http://www.kontras.org/uu_ri_ham/UU%20Nomor%2023%20Tahun%202002%20tentang%20Perlindungan%20Anak.pdf"=>
{},
"20111202233029/http://www.kontras.org/uu_ri_ham/UU%20Nomor%2023%20Tahun%202002%20tentang%20Perlindungan%20Anak.pdf"=>
{},
"20100618201646/http://www.komnasham.go.id/portal/files/39-99.pdf"=>
{"contents"=>
["...actual snippet is returned here..."]},
"20100902235358/http://www.komnasham.go.id/portal/files/39-99.pdf"=>
{"contents"=>
["...actual snippet is returned here..."]},
"20110302213056/http://www.komnasham.go.id/publikasi/doc_download/2-uu-no-39-tahun-1999"=>
{"contents"=>
["...actual snippet is returned here..."]},
"20110302213102/http://www.komnasham.go.id/publikasi/doc_view/2-uu-no-39-tahun-1999?tmpl=component&format=raw"=>
{"contents"=>
["...actual snippet is returned here..."]},
"20120303113654/http://www.iwgia.org/iwgia_files_publications_files/0028_Utimut_heritage.pdf"=>
{}}
I have eight (as opposed to five) results above because I'm also doing a
grouped query, grouping by a field called "original_url", and this leads to
five grouped results.
I've confirmed that my highlight-lacking results DO contain the word "unangan",
as expected, and this term is appearing in a text field that's indexed and
stored, and being searched for all text searches. For example, one of the
search results is for a crawl of this document:
http://www.iwgia.org/iwgia_files_publications_files/0028_Utimut_heritage.pdf
And if you view that document on the web, you'll see that it does contain
"unangan".
Has anyone seen this before? And does anyone have any good suggestions for
troubleshooting/fixing the problem?
Thanks!
- Eric
Re: Some highlighted snippets aren't being returned
Hi again Everyone,
I didn't get any replies to this, so I thought I'd re-send in case anyone
missed it and has any thoughts.
Thanks,
Eric
On Aug 7, 2013, at 1:51 PM, Eric O'Hanlon wrote:
> Hi Everyone,
>
> I'm facing an issue in which my solr query is returning highlighted snippets
> for some, but not all results. For reference, I'm searching through an index
> that contains web crawls of human-rights-related websites. I'm running solr
> as a webapp under Tomcat and I've included the query's solr params from the
> Tomcat log:
>
> ...
> webapp=/solr-4.2
> path=/select
> params={facet=true&sort=score+desc&group.limit=10&spellcheck.q=Unangan&f.mimetype_code.facet.limit=7&hl.simple.pre=&q.alt=*:*&f.organization_type__facet.facet.limit=6&f.language__facet.facet.limit=6&hl=true&f.date_of_capture_.facet.limit=6&group.field=original_url&hl.simple.post=&facet.field=domain&facet.field=date_of_capture_&facet.field=mimetype_code&facet.field=geographic_focus__facet&facet.field=organization_based_in__facet&facet.field=organization_type__facet&facet.field=language__facet&facet.field=creator_name__facet&hl.fragsize=600&f.creator_name__facet.facet.limit=6&facet.mincount=1&qf=text^1&hl.fl=contents&hl.fl=title&hl.fl=original_url&wt=ruby&f.geographic_focus__facet.facet.limit=6&defType=edismax&rows=10&f.domain.facet.limit=6&q=Unangan&f.organization_based_in__facet.facet.limit=6&q.op=AND&group=true&hl.usePhraseHighlighter=true}
> hits=8 status=0 QTime=108
> ...
>
> For the query above (which can be simplified to say: find all documents that
> contain the word "unangan" and return facets, highlights, etc.), I get five
> search results. Only three of these are returning highlighted snippets.
> Here's the "highlighting" portion of the solr response (note: printed in ruby
> notation because I'm receiving this response in a Rails app):
>
>
> "highlighting"=>
>
> {"20100602195444/http://www.kontras.org/uu_ri_ham/UU%20Nomor%2023%20Tahun%202002%20tentang%20Perlindungan%20Anak.pdf"=>
>{},
>
> "20100902203939/http://www.kontras.org/uu_ri_ham/UU%20Nomor%2023%20Tahun%202002%20tentang%20Perlindungan%20Anak.pdf"=>
>{},
>
> "20111202233029/http://www.kontras.org/uu_ri_ham/UU%20Nomor%2023%20Tahun%202002%20tentang%20Perlindungan%20Anak.pdf"=>
>{},
> "20100618201646/http://www.komnasham.go.id/portal/files/39-99.pdf"=>
>{"contents"=>
> ["...actual snippet is returned here..."]},
> "20100902235358/http://www.komnasham.go.id/portal/files/39-99.pdf"=>
>{"contents"=>
> ["...actual snippet is returned here..."]},
>
> "20110302213056/http://www.komnasham.go.id/publikasi/doc_download/2-uu-no-39-tahun-1999"=>
>{"contents"=>
> ["...actual snippet is returned here..."]},
>
> "20110302213102/http://www.komnasham.go.id/publikasi/doc_view/2-uu-no-39-tahun-1999?tmpl=component&format=raw"=>
>{"contents"=>
> ["...actual snippet is returned here..."]},
>
> "20120303113654/http://www.iwgia.org/iwgia_files_publications_files/0028_Utimut_heritage.pdf"=>
>{}}
>
>
> I have eight (as opposed to five) results above because I'm also doing a
> grouped query, grouping by a field called "original_url", and this leads to
> five grouped results.
>
> I've confirmed that my highlight-lacking results DO contain the word
> "unangan", as expected, and this term is appearing in a text field that's
> indexed and stored, and being searched for all text searches. For example,
> one of the search results is for a crawl of this document:
> http://www.iwgia.org/iwgia_files_publications_files/0028_Utimut_heritage.pdf
>
> And if you view that document on the web, you'll see that it does contain
> "unangan".
>
> Has anyone seen this before? And does anyone have any good suggestions for
> troubleshooting/fixing the problem?
>
> Thanks!
>
> - Eric
Re: Some highlighted snippets aren't being returned
Thank you, Aloke and Bryan! I'll give this a try and I'll report back on what
happens!
- Eric
On Sep 9, 2013, at 2:32 AM, Aloke Ghoshal wrote:
> Hi Eric,
>
> As Bryan suggests, you should look at appropriately setting up the
> fragSize & maxAnalyzedChars for long documents.
>
> One issue I find with your search request is that in trying to
> highlight across three separate fields, you have added each of them as
> a separate request param:
> hl.fl=contents&hl.fl=title&hl.fl=original_url
>
> The way to do it would be
> (http://wiki.apache.org/solr/HighlightingParameters#hl.fl) to pass
> them as values to one comma (or space) separated field:
> hl.fl=contents,title,original_url
>
> Regards,
> Aloke
>
> On 9/9/13, Bryan Loofbourrow wrote:
>> Eric,
>>
>> Your example document is quite long. Are you setting hl.maxAnalyzedChars?
>> If you don't, the highlighter you appear to be using will not look past
>> the first 51,200 characters of the document for snippet candidates.
>>
>> http://wiki.apache.org/solr/HighlightingParameters#hl.maxAnalyzedChars
>>
>> -- Bryan
>>
>>
>>> -Original Message-
>>> From: Eric O'Hanlon [mailto:elo2...@columbia.edu]
>>> Sent: Sunday, September 08, 2013 2:01 PM
>>> To: solr-user@lucene.apache.org
>>> Subject: Re: Some highlighted snippets aren't being returned
>>>
>>> Hi again Everyone,
>>>
>>> I didn't get any replies to this, so I thought I'd re-send in case
>> anyone
>>> missed it and has any thoughts.
>>>
>>> Thanks,
>>> Eric
>>>
>>> On Aug 7, 2013, at 1:51 PM, Eric O'Hanlon wrote:
>>>
>>>> Hi Everyone,
>>>>
>>>> I'm facing an issue in which my solr query is returning highlighted
>>> snippets for some, but not all results. For reference, I'm searching
>>> through an index that contains web crawls of human-rights-related
>>> websites. I'm running solr as a webapp under Tomcat and I've included
>> the
>>> query's solr params from the Tomcat log:
>>>>
>>>> ...
>>>> webapp=/solr-4.2
>>>> path=/select
>>>>
>>>
>> params={facet=true&sort=score+desc&group.limit=10&spellcheck.q=Unangan&f.m
>>>
>> imetype_code.facet.limit=7&hl.simple.pre=&q.alt=*:*&f.organization_t
>>>
>> ype__facet.facet.limit=6&f.language__facet.facet.limit=6&hl=true&f.date_of
>>>
>> _capture_.facet.limit=6&group.field=original_url&hl.simple.post=>>
>>> &facet.field=domain&facet.field=date_of_capture_&facet.field=mimetype
>>>
>> _code&facet.field=geographic_focus__facet&facet.field=organization_based_i
>>>
>> n__facet&facet.field=organization_type__facet&facet.field=language__facet&
>>>
>> facet.field=creator_name__facet&hl.fragsize=600&f.creator_name__facet.face
>>>
>> t.limit=6&facet.mincount=1&qf=text^1&hl.fl=contents&hl.fl=title&hl.fl=orig
>>>
>> inal_url&wt=ruby&f.geographic_focus__facet.facet.limit=6&defType=edismax&r
>>>
>> ows=10&f.domain.facet.limit=6&q=Unangan&f.organization_based_in__facet.fac
>>> et.limit=6&q.op=AND&group=true&hl.usePhraseHighlighter=true} hits=8
>>> status=0 QTime=108
>>>> ...
>>>>
>>>> For the query above (which can be simplified to say: find all
>> documents
>>> that contain the word "unangan" and return facets, highlights, etc.), I
>>> get five search results. Only three of these are returning highlighted
>>> snippets. Here's the "highlighting" portion of the solr response (note:
>>> printed in ruby notation because I'm receiving this response in a Rails
>>> app):
>>>>
>>>>
>>>> "highlighting"=>
>>>>
>>>
>> {"20100602195444/http://www.kontras.org/uu_ri_ham/UU%20Nomor%2023%20Tahun%
>>> 202002%20tentang%20Perlindungan%20Anak.pdf"=>
>>>> {},
>>>>
>>>
>> "20100902203939/http://www.kontras.org/uu_ri_ham/UU%20Nomor%2023%20Tahun%2
>>> 02002%20tentang%20Perlindungan%20Anak.pdf"=>
>>>> {},
>>>>
>>>
>> "20111202233029/http://www.kontras.org/uu_ri_ham/UU%20Nomor%2023%20Tahun%2
>>> 02002%20tenta
Re: Some highlighted snippets aren't being returned
maxAnalyzedChars did it! I wasn't setting that param, and I'm working with
some very long documents. I also made the hl.fl param formatting change that
you suggested, Aloke.
Thanks again!
- Eric
On Sep 11, 2013, at 3:10 AM, Eric O'Hanlon wrote:
> Thank you, Aloke and Bryan! I'll give this a try and I'll report back on
> what happens!
>
> - Eric
>
> On Sep 9, 2013, at 2:32 AM, Aloke Ghoshal wrote:
>
>> Hi Eric,
>>
>> As Bryan suggests, you should look at appropriately setting up the
>> fragSize & maxAnalyzedChars for long documents.
>>
>> One issue I find with your search request is that in trying to
>> highlight across three separate fields, you have added each of them as
>> a separate request param:
>> hl.fl=contents&hl.fl=title&hl.fl=original_url
>>
>> The way to do it would be
>> (http://wiki.apache.org/solr/HighlightingParameters#hl.fl) to pass
>> them as values to one comma (or space) separated field:
>> hl.fl=contents,title,original_url
>>
>> Regards,
>> Aloke
>>
>> On 9/9/13, Bryan Loofbourrow wrote:
>>> Eric,
>>>
>>> Your example document is quite long. Are you setting hl.maxAnalyzedChars?
>>> If you don't, the highlighter you appear to be using will not look past
>>> the first 51,200 characters of the document for snippet candidates.
>>>
>>> http://wiki.apache.org/solr/HighlightingParameters#hl.maxAnalyzedChars
>>>
>>> -- Bryan
>>>
>>>
>>>> -Original Message-
>>>> From: Eric O'Hanlon [mailto:elo2...@columbia.edu]
>>>> Sent: Sunday, September 08, 2013 2:01 PM
>>>> To: solr-user@lucene.apache.org
>>>> Subject: Re: Some highlighted snippets aren't being returned
>>>>
>>>> Hi again Everyone,
>>>>
>>>> I didn't get any replies to this, so I thought I'd re-send in case
>>> anyone
>>>> missed it and has any thoughts.
>>>>
>>>> Thanks,
>>>> Eric
>>>>
>>>> On Aug 7, 2013, at 1:51 PM, Eric O'Hanlon wrote:
>>>>
>>>>> Hi Everyone,
>>>>>
>>>>> I'm facing an issue in which my solr query is returning highlighted
>>>> snippets for some, but not all results. For reference, I'm searching
>>>> through an index that contains web crawls of human-rights-related
>>>> websites. I'm running solr as a webapp under Tomcat and I've included
>>> the
>>>> query's solr params from the Tomcat log:
>>>>>
>>>>> ...
>>>>> webapp=/solr-4.2
>>>>> path=/select
>>>>>
>>>>
>>> params={facet=true&sort=score+desc&group.limit=10&spellcheck.q=Unangan&f.m
>>>>
>>> imetype_code.facet.limit=7&hl.simple.pre=&q.alt=*:*&f.organization_t
>>>>
>>> ype__facet.facet.limit=6&f.language__facet.facet.limit=6&hl=true&f.date_of
>>>>
>>> _capture_.facet.limit=6&group.field=original_url&hl.simple.post=>>>
>>>> &facet.field=domain&facet.field=date_of_capture_&facet.field=mimetype
>>>>
>>> _code&facet.field=geographic_focus__facet&facet.field=organization_based_i
>>>>
>>> n__facet&facet.field=organization_type__facet&facet.field=language__facet&
>>>>
>>> facet.field=creator_name__facet&hl.fragsize=600&f.creator_name__facet.face
>>>>
>>> t.limit=6&facet.mincount=1&qf=text^1&hl.fl=contents&hl.fl=title&hl.fl=orig
>>>>
>>> inal_url&wt=ruby&f.geographic_focus__facet.facet.limit=6&defType=edismax&r
>>>>
>>> ows=10&f.domain.facet.limit=6&q=Unangan&f.organization_based_in__facet.fac
>>>> et.limit=6&q.op=AND&group=true&hl.usePhraseHighlighter=true} hits=8
>>>> status=0 QTime=108
>>>>> ...
>>>>>
>>>>> For the query above (which can be simplified to say: find all
>>> documents
>>>> that contain the word "unangan" and return facets, highlights, etc.), I
>>>> get five search results. Only three of these are returning highlighted
>>>> snippets. Here's the "highlighting" portion of the solr response (note:
>>>> printed in ruby notation because I'm receiving this response in a Rails
>>&
