Presumably, if an app got just partial results without highlightings, it can make the second request searching by IDs of found results, but specify initial query for highlighting via hl.q.
On Sat, Nov 16, 2024 at 11:13 AM Mingchun Zhao <mingchun.zha...@gmail.com> wrote: > Hi Luke, > > Thank you for analyzing the code and kindly providing a detailed > explanation. > > I now understand that it is not possible to retrieve the partial result set > or its highlighted snippets for a query interrupted due to exceeding the > "timeAllowed" setting value. > > I truly appreciate your help once again. > > Regards, > Zhao > > 2024年11月15日(金) 21:46 Luke Kot-Zaniewski (BLOOMBERG/ 919 3RD A) < > lkotzanie...@bloomberg.net>: > > > From reading the code I don't think it is possible. If your timeout is > > occurring in the core search the SolrIndexSearcher will throw a certain > > type of ExitingReaderException that is caught very high up (in the > > SearchHandler). This happens as the SearchHandler is looping through > > "SearchComponents" one of which is the HighlightComponent. Effectively > this > > means the search processing is short-circuited as no downstream > components > > get invoked. Not sure if changing this behavior is the right thing since > > highlighting itself can be expensive so the timeout would be misleading. > I > > suppose you could consider implementing more granular timeouts but not > sure > > about the return on investment of something like that. > > > > Sent from Bloomberg Professional for Android > > > > ----- Original Message ----- > > From: Mingchun Zhao <users@solr.apache.org> > > To: users@solr.apache.org > > At: 11/13/24 20:38:49 UTC-05:00 > > > > > > Hi Luke, > > > > Thank you very much for the valuable information. I’ll give the Unified > > Highlighter’s Postings feature a try. > > > > That said, I’d still like to know more about the behavior of the > > "timeAllowed" parameter, especially whether it’s possible to retrieve > > partial search results (both matching documents and highlighted snippets) > > when a query times out. > > > > If you have any information on this, I’d appreciate it. > > > > Regards, > > Zhao > > > > 2024年11月13日(水) 21:50 Luke Kot-Zaniewski (BLOOMBERG/ 919 3RD A) < > > lkotzanie...@bloomberg.net>: > > > > > Just throwing this out there, have you tried the unifiedHighlighter > with > > > termVectors/character offsets? The default configuration re-analyzes > the > > > text of the result-set which can be cpu-bound for large docs/fields. > But > > > there are ways to get around this by storing the character offsets and > > > termVectors in the index, which can be a good tradeoff in many > > situations, > > > i.e. "Postings" > > > > > > > > > https://solr.apache.org/guide/solr/latest/query-guide/highlighting.html#:~:text=over%20highlighting%20performance.-,Postings,-%3A%20Supported%20by%20the > > > > > > I know this doesn't answer your question but just wanted to mention an > > > alternative solution to relying on time-outs/partial-results, which may > > be > > > frustrating for other reasons. > > > Sent from Bloomberg Professional for Android > > > > > > ----- Original Message ----- > > > From: Mingchun Zhao <users@solr.apache.org> > > > To: users@solr.apache.org > > > At: 11/12/24 21:55:36 UTC-05:00 > > > > > > > > > Hi, > > > > > > If a query is interrupted due to timeAllowed, does it still return the > > > partially matched documents and highlight snippets on it? Or does the > > > behavior vary depending on the Solr version? > > > In my testing, when the response header includes "partialResults=true", > > the > > > partial search results or snippets were not included in the response > > body. > > > > > > Regards, > > > Zhao > > > > > > -- Sincerely yours Mikhail Khludnev
