Jean-Marc, This might not solve the particular problem you're having, but to get spellcheck to work properly in a distributed enviornment, be sure to set the "shards.qt" parameter to the name of your request handler. See http://wiki.apache.org/solr/SpellCheckComponent#Distributed_Search_Support .
James Dyer Ingram Content Group (615) 213-4311 -----Original Message----- From: Jean-Marc Desprez [mailto:jm.desp...@gmail.com] Sent: Tuesday, November 12, 2013 8:57 AM To: solr-user@lucene.apache.org Subject: [Spellcheck] NullPointerException on QueryComponent.mergeIds Hello, I'm following this tutorial : http://wiki.apache.org/solr/SolrCloud with a SolR 4.5.0 I'm at the very first step, only two replica and two shard and I have only *one* document in the index. When I try to get a spellcheck, I have this error : java.lang.NullPointerException at org.apache.solr.handler.component.QueryComponent.mergeIds(QueryComponent.java:843) I do not understand what I'm doing wrong and how I can get an error on mergeIds with only one document in the index (merge this doc with ... ??) Some technical details : URL : http://127.0.0.1:8983/solr/bench/select?shards.qt=ri_spell_fr_FR&q=sistem&distrib=true If I set "distrib" to false, no error. My uniqueKey is indexed and stored : <field name="ref" type="string" indexed="true" stored="true" multiValued="false" /> <uniqueKey>ref</uniqueKey> My conf : <requestHandler name="ri_spell_fr_FR" class="solr.SearchHandler" lazy="true"> <lst name="defaults"> <bool name="spellcheck">true</bool> <str name="spellcheck.onlyMorePopular">true</str> <str name="spellcheck.extendedResults">true</str> <str name="spellcheck.collateExtendedResults">true</str> <str name="spellcheck.maxCollationTries">3</str> <str name="spellcheck.collate">true</str> <str name="spellcheck.count">5</str> <str name="spellcheck.dictionary">ri_spell_fr_FR</str> <str name="spellcheck.build">false</str> </lst> <arr name="components"> <str>spellcheck_fr_FR</str> </arr> </requestHandler> <searchComponent name="spellcheck_fr_FR" class="solr.SpellCheckComponent"> <str name="queryAnalyzerFieldType">suggest_fr_FR</str> <lst name="spellchecker"> <str name="name">ri_spell_fr_FR</str> <str name="field">spell_fr_FR</str> <str name="spellcheckIndexDir">./spellchecker_fr_FR</str> <str name="distanceMeasure">org.apache.lucene.search.spell.JaroWinklerDistance</str> </lst> ... </searchComponent> With this URL : http://127.0.0.1:8983/solr/bench/select?qt=ri_spell_fr_FR&q=sistem I have no error but the response is empty : <response><lst name="responseHeader"><int name="status">0</int><int name="QTime">1</int></lst></response> Thanks Jean-Marc