What happens if you copy the index from one machine to the other? Probably from prod to test. If your results stay the same, that'd eliminate index differences as the culprit.
What do you get by attaching &debugQuery=on the the queries that differ? Is the parsed query any different? I'm wondering here if you somehow have a difference in the configuration, perhaps dismax? anyway, if the parsed queries are identical, that eliminates that possibility. Next, what about synonym files? Stopwords? Are you absolutely sure they're identical? If you're using dismax, is it possible that the mm (minimum should match) is different? Perhaps this is all stuff you've done already, but this would at least narrow down where the problem might lie... Best Erick On Wed, May 11, 2011 at 12:10 PM, Paul Michalet <p...@pix-l.fr> wrote: > Thanks for the hint :) > We ruled that out after having tested special characters, and if it was an > applicative bug, it wouldn't work consistently like it currently does for > the majority of queries. > The only difference we noticed was in the HTTP headers in the SOLR response: > occasionnally, the "Content-length" is present, but I've been told it was > probably not causing our bug: > => dev: > headers = Array > ( > [0] => HTTP/1.1 200 OK > [1] => Last-Modified: Fri, 29 Apr 2011 13:36:21 GMT > [2] => ETag: "MTFjZjU2MTgxNDgwMDAwMFNvbHI=" > [3] => Content-Type: text/plain; charset=utf-8 > [4] => Server: Jetty(6.1.3) > ) > > => production: > headers = Array > ( > [0] => HTTP/1.1 200 OK > [1] => Last-Modified: Fri, 06 May 2011 14:18:36 GMT > [2] => ETag: "OGI3ZWYyZDUxNDgwMDAwMFNvbHI=" > [3] => Content-Type: text/plain; charset=utf-8 > [4] => Content-Length: 2558 > [5] => Server: Jetty(6.1.3) > ) > > Paul Michalet > > Le 11/05/2011 17:47, Paul Libbrecht a écrit : >> >> Could it be something in the transmission of the query? >> Or is it also identical? >> >> paul >> >> >> Le 11 mai 2011 à 17:19, Paul Michalet a écrit : >> >>> Hello everyone >>> >>> We have succesfully installed SOLR on 2 servers (developpement and >>> production), using the same configuration files and paths. >>> Both SOLR instances have indexed the same contents and most queries give >>> identical results, but there's a few exceptions where the production >>> instance returns 0 results (the developpement instance returns perfectly >>> valid results for the same query). >>> We checked the logs in both environments without finding anything >>> suspicous (the queries are rigorously identical, and the index is built in >>> the exact same way) and we've run out of options as to where to look for >>> debugging these cases. >>> >>> Our developpement server is Debian and the production is CentOS; >>> the SOLR version installed in both environments is 1.4.0. >>> >>> The weird thing is that the few queries failing in the production >>> instance contain very common terms (without quotes) which, when queried >>> individually, return valid results... >>> Any pointers would be greatly appreciated; >>> thanks in advance ! >>> >>> Paul >> >
