Hi Ere, Those seem like valid issues. I've created an issue : SOLR-7275 <https://issues.apache.org/jira/browse/SOLR-7275> and will create more as I find more of those. I plan to get to them and fix over the weekend.
On Wed, Apr 15, 2015 at 5:13 AM, Ere Maijala <ere.maij...@helsinki.fi> wrote: > Hi, > > I'm trying to gather information on how mlt works or is supposed to work > with SolrCloud and a sharded collection. I've read issues SOLR-6248, > SOLR-5480 and SOLR-4414, and docs at < > https://wiki.apache.org/solr/MoreLikeThis>, but I'm still struggling with > multiple issues. I've been testing with Solr 5.1 and the "Getting Started" > sample cloud. So, with a freshly extracted Solr, these are the steps I've > done: > > bin/solr start -e cloud -noprompt > bin/post -c gettingstarted docs/ > bin/post -c gettingstarted example/exampledocs/books.json > > After this I've tried different variations of queries with limited success: > > <http://localhost:8983/solr/gettingstarted/select?q={!mlt}non-existing> > causes java.lang.NullPointerException at > org.apache.solr.search.mlt.CloudMLTQParser.parse(CloudMLTQParser.java:80) > > <http://localhost:8983/solr/gettingstarted/select?q={!mlt}978-0641723445> > causes java.lang.NullPointerException at > org.apache.solr.search.mlt.CloudMLTQParser.parse(CloudMLTQParser.java:84) > > < > http://localhost:8983/solr/gettingstarted/select?q={!mlt%20qf=title}978-0641723445 > <http://localhost:8983/solr/gettingstarted/select?q=%7B!mlt%20qf=title%7D978-0641723445> > > > causes java.lang.NullPointerException at > org.apache.lucene.queries.mlt.MoreLikeThis.retrieveTerms(MoreLikeThis.java:759) > > < > http://localhost:8983/solr/gettingstarted/select?q={!mlt%20qf=cat}978-0641723445 > <http://localhost:8983/solr/gettingstarted/select?q=%7B!mlt%20qf=cat%7D978-0641723445> > > > actually gives results > > < > http://localhost:8983/solr/gettingstarted/select?q={!mlt%20qf=author,cat}978-0641723445 > <http://localhost:8983/solr/gettingstarted/select?q=%7B!mlt%20qf=author,cat%7D978-0641723445> > > > again causes Java.lang.NullPointerException at > org.apache.lucene.queries.mlt.MoreLikeThis.retrieveTerms(MoreLikeThis.java:759) > > > I guess the actual question is, how am I supposed to use the handler to > replicate behavior of non-distributed mlt that was formerly used with > qt=morelikethis and the following configuration in solrconfig.xml: > > <requestHandler name="morelikethis" class="solr.MoreLikeThisHandler"> > <lst name="defaults"> > <str > name="mlt.fl">title,title_short,callnumber-label,topic,language,author,publishDate</str> > <str name="mlt.qf"> > title^75 > title_short^100 > callnumber-label^400 > topic^300 > language^30 > author^75 > publishDate > </str> > <int name="mlt.mintf">1</int> > <int name="mlt.mindf">1</int> > <str name="mlt.boost">true</str> > <int name="mlt.count">5</int> > <int name="rows">5</int> > </lst> > </requestHandler> > > Real-life full schema and config can be found at < > https://github.com/NatLibFi/NDL-VuFind-Solr/tree/master/vufind/biblio/conf > >. > > --Ere > > -- > Ere Maijala > Kansalliskirjasto / The National Library of Finland > -- Anshum Gupta
