[SOLR-5090] NPE in DirectSpellChecker with alternativeTermCount and mm.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.4
• Fix Version/s: 4.8.1, 4.9, 6.0
• Component/s: spellchecker

Environment

4.4.0 1504776 - sarowe - 2013-07-19 02:58:35

• Assignee: James Dyer
• Reporter: Markus Jelsma
• Created: 30/Jul/13 11:38
• Updated: 09/May/16 18:58
• Resolved: 05/May/14 18:17

Description

Query with three terms of which one is misspelled and spellcheck.alternativeTermCount=0&mm=3 yields the following NPE:

ERROR org.apache.solr.servlet.SolrDispatchFilter  – null:java.lang.NullPointerException
        at org.apache.lucene.search.spell.DirectSpellChecker.suggestSimilar(DirectSpellChecker.java:422)
        at org.apache.lucene.search.spell.DirectSpellChecker.suggestSimilar(DirectSpellChecker.java:355)
        at org.apache.solr.spelling.DirectSolrSpellChecker.getSuggestions(DirectSolrSpellChecker.java:189)
        at org.apache.solr.handler.component.SpellCheckComponent.process(SpellCheckComponent.java:188)
        at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:208)
        at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
        at org.apache.solr.core.SolrCore.execute(SolrCore.java:1904)
        at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:659)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:362)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:158